what is -5/9 simplified​

Answers

Answer 1

Answer:

59

Step-by-step explanation:

i hope this halp

Answer 2

Answer:

Step-by-step explanation:

-0.5


Related Questions

Let f(x) = (cx®y if (< I<1, 0

Answers

The function f(x) is defined as follows: if x is between 0 and 1 (exclusive), f(x) is equal to c[tex]x^{y}[/tex], and if x is not in that range, f(x) is equal to 0.

The given function f(x) is defined using a conditional statement. It has two cases: one for values of x between 0 and 1 (exclusive), and another for values of x outside that range.

In the first case, when x is between 0 and 1, the function evaluates to cx^y, where c and y are constants. The value of c determines the scaling factor, while the value of y determines the exponent. The function f(x) will take on different values depending on the specific values of c and y.

In the second case, when x is not between 0 and 1, the function evaluates to 0. This means that for any value of x outside the range (0, 1), f(x) will always be equal to 0.

The given function allows for flexibility in defining the behavior of f(x) within the range (0, 1), while assigning a constant value of 0 for any other values of x.

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(a) Suppose that X and Y are identically distributed, but not necessarily independent. Show Cov(X+Y,X-Y)=0

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The covariance between the sum (X+Y) and the difference (X-Y) of two identically distributed random variables X and Y is zero.

Let's calculate the covariance using the definition: Cov(X+Y, X-Y) = E[(X+Y)(X-Y)] - E[X+Y]E[X-Y]. Expanding the expression, we have Cov(X+Y, X-Y) = E[X² - XY + XY - Y²] - E[X]E[X] + E[X]E[Y] - E[Y]E[X] - E[Y]E[X] + E[Y²]. Simplifying further, we get Cov(X+Y, X-Y) = E[X²] - E[X²] + E[Y²] - E[Y²] - E[X]E[X] - E[Y]E[X] + E[X]E[Y] + E[Y]E[X] = 0. Here, we use the fact that X and Y are identically distributed, so their means and variances are equal (E[X] = E[Y] and Var[X] = Var[Y]). Thus, E[X]E[X] - E[Y]E[X] + E[X]E[Y] + E[Y]E[X] can be simplified to 2E[X]E[Y] - 2E[X]E[Y], which equals zero. Therefore, Cov(X+Y, X-Y) = 0, indicating that the sum and difference of identically distributed random variables X and Y are uncorrelated.

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The Hoylake Rescue Squad receives an emergency call every 1, 2, 3, 4, 5, or 6 hours, according to the following probability distribution. The squad is on duty 24 hours per day, 7 days per week: a. Simulate the emergency calls for 3 days (note that this will require a ❝running,❝ or cumulative, hourly clock), using the random number table.
b. Compute the average time between calls and compare this value with the expected value of the time between calls from the probability distribution. Why are the results different?

Answers

3 hours and 6 are the same so your goood

The results are different because the simulated data is based on random numbers and may not perfectly match the probability distribution.

To simulate the emergency calls for 3 days, we need to use a cumulative hourly clock and generate random numbers to determine when the calls will occur. Let's use the following table of random numbers:

Random Number Call Time

57 1 hour

23 2 hours

89 3 hours

12 4 hours

45 5 hours

76 6 hours

Starting at 12:00 AM on the first day, we can generate the following sequence of emergency calls:

Day 1:

12:00 AM - Call

1:00 AM - No Call

3:00 AM - Call

5:00 AM - No Call

5:00 PM - Call

Day 2:

1:00 AM - No Call

2:00 AM - Call

4:00 AM - No Call

7:00 AM - Call

8:00 AM - No Call

11:00 PM - Call

Day 3:

12:00 AM - No Call

1:00 AM - Call

2:00 AM - No Call

4:00 AM - No Call

7:00 AM - Call

9:00 AM - Call

10:00 PM - Call

The average time between calls can be calculated by adding up the times between each call and dividing by the total number of calls. Using the simulated data from part a, we get:

Average time between calls = ((2+10+10+12)+(1+2+3)) / 7 = 5.57 hours

The expected value of the time between calls can be calculated using the probability distribution:

Expected value = (1/6)x1 + (1/6)x2 + (1/6)x3 + (1/6)x4 + (1/6)x5 + (1/6)x6 = 3.5 hours

The results are different because the simulated data is based on random numbers and may not perfectly match the probability distribution. As more data is generated and averaged, the simulated results should approach the expected value.

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[ 1 1 0 ]
the matrix A = [14 3 1 ]
[ K 0 0 ]
has three distinct real eigenvalues if and only if
____ < K < ____

Answers

The matrix[tex]A=\begin{bmatrix}14&3 &1 \\k&0 &0\end{bmatrix}[/tex]has three distinct real eigenvalues if and only if -16.33... < k < 4.33...,

To find the eigenvalues of a matrix A, we need to solve the characteristic equation det(A - λI) = 0, where I is the identity matrix and det denotes the determinant. For the matrix A given above, we have

det(A - λI) =[tex]\begin{vmatrix}14 - \lambda&3 &1 \\k&-\lambda &0\end{vmatrix}[/tex]

= (14 - λ)(-λ) - 3k = λ² - 14λ - 3k.

The roots of this quadratic equation are the eigenvalues of A, which are given by the formula

λ = (14 ± √(196 + 12k))/2.

For A to have three distinct real eigenvalues, we need the discriminant Δ = 196 + 12k to be positive and the two roots to be different. This implies that

196 + 12k > 0 and 14 - √(196 + 12k) ≠ 14 + √(196 + 12k).

Simplifying the second inequality, we get

√(196 + 12k) > 0, which is always true.

Therefore, the condition for A to have three distinct real eigenvalues is

-16.33... < k < 4.33...,

where the values -16.33... and 4.33... are obtained by solving the equation 14 - √(196 + 12k) = 14 + √(196 + 12k) and dividing the resulting equation by 2.

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Complete Question:

The matrix A = [tex]\begin{bmatrix} 14&3 &1 \\ k&0 &0 \end{bmatrix}[/tex] has three distinct real eigenvalues if and only if

____ < K < ____

question 1010 pts estimate the energy density of nuclear fuels (in terawatt/kilogram, 1 terawatt = 1e12 watt).

Answers

The estimated energy density of U-235 is approximately 9.75e-23 Terawatt-hours per kilogram (TWh/kg)

The energy density of nuclear fuels can vary depending on the specific fuel used. However, one commonly used nuclear fuel is uranium-235 (U-235).

The energy density of U-235 can be estimated using its mass energy equivalence, which is given by Einstein's famous equation E = mc^2. In this equation, E represents energy, m represents mass, and c represents the speed of light (approximately 3e8 m/s).

The atomic mass of U-235 is approximately 235 atomic mass units (u), which is equivalent to 3.90e-25 kilograms (kg).

Using the equation E = mc^2, we can calculate the energy:

E = (3.90e-25 kg) * (3e8 m/s)^2

= 3.51e-10 joules (J)

To convert the energy from joules to terawatt-hours (TWh), we divide by 3.6e12 (since 1 terawatt-hour is equal to 3.6e12 joules):

Energy density = (3.51e-10 J) / (3.6e12 J/TWh)

= 9.75e-23 TWh/kg

Therefore, the estimated energy density of U-235 is approximately 9.75e-23 terawatt-hours per kilogram (TWh/kg)

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The energy density of nuclear fuels is typically measured in terms of their mass-energy equivalence, as given by Einstein's famous equation E=mc², where E is the energy, m is the mass, and c is the speed of light.

The energy density of nuclear fuels is therefore dependent on the amount of energy that can be obtained from the fission or fusion of a given amount of mass. The energy density of nuclear fuels is typically much higher than that of traditional fuels, such as fossil fuels, due to the much greater amount of energy that can be obtained from the conversion of nuclear mass into energy.

The energy density of nuclear fuels can vary widely depending on the specific fuel used, the technology used to harness its energy, and other factors. However, some estimates of the energy density of common nuclear fuels are:

Uranium-235: 8.2 × 10¹³ J/kg (2.28 terawatt-hours/kg)

Plutonium-239: 2.4 × 10¹⁴ J/kg (6.67 terawatt-hours/kg)

Deuterium: 8.6 × 10¹⁴ J/kg (23.89 terawatt-hours/kg)

Tritium: 2.7 × 10¹⁴ J/kg (7.50 terawatt-hours/kg)

These estimates are based on the assumption of complete conversion of the nuclear mass into energy, which is not practically achievable. Nevertheless, they provide an idea of the potential energy density of nuclear fuels.

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1. Answer the following questions using this data (Show your work):
75, 71, 42, 55, 67, 48, 80, 63, 67, 52, 49, 58,
Median:
Mean:
Max:
IQR:
Q1:
Range: 5.8

Answers

Answer: Q1, 50.5/ Q2 or Median, 60.5/ Q3, 69/ IQR, 18.5/ Min, 42/ Max, 80/ Range, 38

Step-by-step explanation: I'm very smart. (Also it will be to hard to explain).

Hope this helps  : D

hat is the probability that a 0.270 hitter in baseball will not get a hit on his next at-bat?

Answers

To calculate the probability that a 0.270 hitter in baseball will not get a hit on his next at-bat, we need to know the hitter's batting average.

A batting average of 0.270 means that the hitter gets a hit in 27 out of every 100 at-bats. Therefore, the probability of getting a hit on any given at-bat is 0.270.

The probability of not getting a hit on a single at-bat can be calculated as 1 minus the probability of getting a hit. So, the probability of not getting a hit on a single at-bat for a 0.270 hitter is:

Probability of not getting a hit = 1 - Probability of getting a hit

Probability of not getting a hit = 1 - 0.270

Probability of not getting a hit = 0.730

Therefore, the probability that a 0.270 hitter in baseball will not get a hit on his next at-bat is 0.730 or 73.0%.

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which rigid motion the triangles are congreunt by SAS

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If two triangles are congruent by SAS, it means that they have two sides and the included angle that are equal.

In other words, one triangle can be transformed into the other by a rigid motion that involves a translation, a rotation, or a reflection. The specific rigid motion that is used depends on the orientation and position of the triangles in space.

For example, if the triangles are in the same plane and one is simply rotated or reflected to match the other, a rotation or reflection would be used. If the triangles are in different planes, a translation would be needed to move one to the position of the other before a rotation or reflection could be used.

Ultimately, the specific rigid motion used to show congruence by SAS will depend on the specific characteristics of the triangles involved.

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Consider the quadratic form Q(x, y, z) = x^2 - 2xy + 4xz + 3y^2 - 6yz - 2z^2 (a) Express Q as the difference of two sums of perfect squares with positive coefficients. (b) Use your answer in (a) to classify the critical point of f(x, y, z) = 12 + x^2 - 2xy + 4xz + 3y^2 - 6yz - 2z^2, at (0, 0, 0)
Previous question

Answers

(a) The quadratic form Q(x, y, z) can be expressed as the difference of two sums of perfect squares with positive coefficients as follows:

[tex]Q(x, y, z) = (x^2 - 2xy + y^2) + (4xz - 6yz + 3y^2 - 2z^2) = (x - y)^2 + (2z - 3y)^2 - 2y^2[/tex]

In this form, we have the difference of two perfect squares: (x - y) and (2z - 3y)², both with positive coefficients. The term -2y² can also be considered as a perfect square with a negative coefficient.

(b) By looking at the expression for Q(x, y, z) obtained in part (a), we can observe that the critical point of f(x, y, z) = 12 + Q(x, y, z) occurs when (x - y) = 0 and (2z - 3y) = 0. Simplifying these equations, we find x = y and z = (3/2)y.

Substituting these values back into f(x, y, z), we get f(0, 0, 0) = 12. Therefore, at the critical point (0, 0, 0), the value of the function f(x, y, z) is 12.

To classify the critical point, we can analyze the Hessian matrix of the function f(x, y, z) at (0, 0, 0). However, since the Hessian matrix involves second-order partial derivatives, it is not possible to determine its values solely from the given information.

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verify the approximation using technology. (use decimal notation. give your answer to four decimal places.) 0.005,42=

Answers

Verifying the approximation,0.005,42 ≈ 0.0054

Is the approximation of 0.005,42 approximately 0.0054?

The given question requires verification of the approximation 0.005,42, expressed in decimal notation and rounded to four decimal places. By evaluating the given number, we can approximate it as 0.0054.

In the approximation process, we focus on the digit immediately after the decimal point. If it is less than 5, we drop it, and if it is 5 or greater, we round up the preceding digit. In this case, the digit after the decimal point is 4, which is less than 5. Therefore, we drop it, resulting in the approximation of 0.005,42 as 0.0054.

By following the rounding rules for decimal approximation, we can verify that the approximate value of 0.005,42 is indeed 0.0054.

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Write the equation in standard form for the circle x2+y2–36=0

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The standard form of the equation is x^2 + y^2 = 36

To write the equation of the circle x^2 + y^2 - 36 = 0 in standard form, we need to complete the square for both the x and y terms.

Starting with the given equation:

x^2 + y^2 - 36 = 0

Rearranging the terms:

x^2 + y^2 = 36

To complete the square for the x terms, we need to add (1/2) of the coefficient of x, squared. Since the coefficient of x is 0, there is no x term, and thus no need to complete the square for x.

For the y terms, we add (1/2) of the coefficient of y, squared. The coefficient of y is also 0, so there is no y term to complete the square for y.

The equation remains the same:

x^2 + y^2 = 36

In standard form, the equation for a circle is (x - h)^2 + (y - k)^2 = r^2, where (h, k) represents the center of the circle and r represents the radius.

Since there is no x or y term, the center of the circle is at the origin (0, 0), and the radius is the square root of the constant term, which is 6.

Therefore, the standard form of the equation is:

(x - 0)^2 + (y - 0)^2 = 6^2

x^2 + y^2 = 36

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This table contains equivalent ratios between x and y

x
6
8
10
12
y
3
4

6

Enter the missing value from the table.

Answers

The missing value from the table of values is y = 5

Calculating the missing value from the table.

From the question, we have the following parameters that can be used in our computation:

x 6 8 10 12

y  3 4     6

From the above table of values, we can see that

x is divided by 2 to get y

using the above as a guide, we have the following:

y = 1/2x

When the value of x is 10, we have

y = 1/2 * 10

Evaluate

y = 5

Hence, the missing value from the table. is y = 5

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Solve for x. 2x^2+5x-4=0

Answers

here babe!
x
=
5
±
57
4

=
5
±
5
7

4
hopes this helps

An electrician has 6 feet of wire. He cuts the wire into pieces that are 1/2 of a foot in length. How many pieces of wire is he able to cut?

Answers

Answer:

He is able to cut 12 pieces of wire

Step-by-step explanation:

He has 6 pieces of wire that he cuts into 1/2 of a foot. To find it, divide the amount of wire and the length of the wire. 6/ 1/2 is equal to 12. First time ever doing an answer. Hope this helps!

. in how many ways can we draw two red, three green, and two purple balls if the balls are considered distinct?

Answers

There are 24 different ways we can draw two red, three green, and two purple balls if the balls are considered distinct.

To determine the number of ways we can draw the balls, we can use the concept of permutations. Since the balls are considered distinct, the order in which they are drawn matters.

First, let's consider the red balls. We need to choose 2 out of the available 2 red balls, so the number of ways to choose them is 2P2 = 2! = 2.

Next, let's consider the green balls. We need to choose 3 out of the available 3 green balls, so the number of ways to choose them is 3P3 = 3! = 6.

Finally, let's consider the purple balls. We need to choose 2 out of the available 2 purple balls, so the number of ways to choose them is 2P2 = 2! = 2.

To find the total number of ways we can draw the balls, we multiply the number of ways for each color: 2 * 6 * 2 = 24.

Therefore, there are 24 different ways we can draw two red, three green, and two purple balls if the balls are considered distinct.

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if you rolled two dice, what is the probability that you would roll a sum of 5?

Answers

The required probability of rolling a sum of 5 with two dice is 1/9.

Given that two dice are rolled and find the probability of a sum of 5.

To find the probability of rolling a sum of 5  with two dice, write the sample space and then determine the number of favourable outcomes that is the outcomes where the sum is 5 and the total number of possible outcomes.

The formula to find out the probability of any event is

P(event) = (number of favourable outcomes) / total number of possible outcomes.

The sample space of the event  of rolling two dice is

S = { (1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6),

       (2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6),

      (3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6),

       (4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6),

       (5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5, 6),

       (6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6, 6)}

The total possible outcomes is 36.

The favourable outcomes that is the outcomes where the sum is 5 is

(1, 4), (2, 3), (3, 2), (4, 1).

The number of favourable outcomes are 4.

By using the data and formula, the probability of rolling a sum of  5 is,

P(rolling a sum of  5) = (number of favourable outcomes) / total number of possible outcomes.

P(rolling a sum of  5) = 4/ 36

On dividing both numerator and denominator by 4 gives,

P(rolling a sum of  5) = 1/9.

Hence, the required probability of rolling a sum of 5 with two dice is 1/9.

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Divide 6 sqrt5cis (11pi/6) by 3 sqrt6cis (pi/2)

Answers

The quotient of the expression is (√30 / 3) cis (4π / 3).

Let's break down the given expressions into their magnitude and angle components:

Expression 1: 6√5cis(11π/6)

Magnitude: 6√5

Angle: 11π/6

Expression 2: 3√6cis(π/2)

Magnitude: 3√6

Angle: π/2

Now, let's apply the division rule:

Step 1: Divide the magnitudes:

6√5 ÷ 3√6

To divide the magnitudes, we divide the values under the square roots:

(6/3) * (√5/√6) = 2 * (√5/√6)

We can simplify this expression further by rationalizing the denominator. To rationalize, we multiply both the numerator and the denominator by the conjugate of the denominator (√6):

(2 * (√5/√6)) * (√6/√6) = (2√5 * √6) / (√6 * √6)

= (2√30) / 6

= √30 / 3

So, the magnitude component of the quotient is √30 / 3.

Step 2: Subtract the angles:

(11π/6) - (π/2)

To subtract the angles, we need a common denominator:

(11π/6) - (3π/6) = (11π - 3π) / 6 = 8π / 6

To simplify the angle, we divide the numerator and denominator by their greatest common divisor (2):

(8π / 6) ÷ (2/2) = (4π / 3)

So, the angle component of the quotient is 4π / 3.

Step 3: Combine the magnitude and angle components:

The quotient is given by (√30 / 3) cis (4π / 3).

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Prove that Q[x]/ is isomorphic to Q(?2 ) = {a + b?2 |a, b belong to Q} which was shown to be a field in Example 4.1.1.

Answers

Answer:

By defining a mapping from Q[x]/<x^2 - 2> to Q(?2) as φ(f(x) + <x^2 - 2>) = f(?2) we can show that the two rings are isomorphic, as this mapping preserves the ring structure and is bijective.

Step-by-step explanation:

To prove that Q[x]/ is isomorphic to Q(?2), we need to show that there exists a bijective ring homomorphism between the two rings.

Let f: Q[x]/ -> Q(?2) be defined as f(a + bx + ) = a + b?2, where a, b belong to Q and is the ideal generated by x^2 - 2. We need to show that f is a well-defined ring homomorphism that preserves the operations of addition and multiplication.

First, we need to show that f is well-defined. Let a + bx + and c + dx + be two elements of Q[x]/ such that a + bx + = c + dx + . Then, we have (a - c) + (b - d)x + in . Since is generated by x^2 - 2, we have x^2 - 2 in , which implies that (x^2 - 2)(a - c) = 0 and (x^2 - 2)(b - d) = 0. Since Q is a field, x^2 - 2 is irreducible over Q, which implies that it is a prime element of Q[x]. Therefore, we must have either a - c = 0 or b - d = 0. This implies that f(a + bx + ) = a + b?2 is well-defined.

Next, we need to show that f is a ring homomorphism. Let a + bx + and c + dx + be two elements of Q[x]/. Then, we have:

f((a + bx + ) + (c + dx + )) = f((a + c) + (b + d)x + ) = (a + c) + (b + d)?2 = (a + b?2) + (c + d?2) = f(a + bx + ) + f(c + dx + )

and

f((a + bx + )(c + dx + )) = f((ac + bd) + (ad + bc)x + ) = (ac + bd) + (ad + bc)?2 = (a + b?2)(c + d?2) = f(a + bx + )f(c + dx + )

Thus, f preserves the operations of addition and multiplication, and hence it is a ring homomorphism.

Next, we need to show that f is bijective. To do this, we need to construct an inverse mapping g: Q(?2) -> Q[x]/. Let g(a + b?2) = a + bx + , where x^2 - 2 = 0 and b = a/(2?). It is easy to see that g is well-defined and that g(f(a + bx + )) = a + bx + for all a + bx + in Q[x]/. Therefore, g and f are inverse mappings, which implies that f is bijective.

Since f is a bijective ring homomorphism, it follows that Q[x]/ is isomorphic to Q(?2).

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By defining a mapping from Q[x]/<x^2 - 2> to Q(?2) as φ(f(x) + <x^2 - 2>) = f(?2) we can show that the two rings are isomorphic, as this mapping preserves the ring structure and is bijective.

To prove that Q[x]/ is isomorphic to Q(?2), we need to show that there exists a bijective ring homomorphism between the two rings.

Let f: Q[x]/ -> Q(?2) be defined as f(a + bx + ) = a + b?2, where a, b belong to Q and is the ideal generated by x^2 - 2. We need to show that f is a well-defined ring homomorphism that preserves the operations of addition and multiplication.

First, we need to show that f is well-defined. Let a + bx + and c + dx + be two elements of Q[x]/ such that a + bx + = c + dx + . Then, we have (a - c) + (b - d)x + in . Since is generated by x^2 - 2, we have x^2 - 2 in , which implies that (x^2 - 2)(a - c) = 0 and (x^2 - 2)(b - d) = 0. Since Q is a field, x^2 - 2 is irreducible over Q, which implies that it is a prime element of Q[x]. Therefore, we must have either a - c = 0 or b - d = 0. This implies that f(a + bx + ) = a + b?2 is well-defined.

Next, we need to show that f is a ring homomorphism. Let a + bx + and c + dx + be two elements of Q[x]/. Then, we have:

f((a + bx + ) + (c + dx + )) = f((a + c) + (b + d)x + ) = (a + c) + (b + d)?2 = (a + b?2) + (c + d?2) = f(a + bx + ) + f(c + dx + )

and

f((a + bx + )(c + dx + )) = f((ac + bd) + (ad + bc)x + ) = (ac + bd) + (ad + bc)?2 = (a + b?2)(c + d?2) = f(a + bx + )f(c + dx + )

Thus, f preserves the operations of addition and multiplication, and hence it is a ring homomorphism.

Next, we need to show that f is bijective. To do this, we need to construct an inverse mapping g: Q(?2) -> Q[x]/. Let g(a + b?2) = a + bx + , where x^2 - 2 = 0 and b = a/(2?). It is easy to see that g is well-defined and that g(f(a + bx + )) = a + bx + for all a + bx + in Q[x]/. Therefore, g and f are inverse mappings, which implies that f is bijective.

Since f is a bijective ring homomorphism, it follows that Q[x]/ is isomorphic to Q(?2).

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What are the solutions to the equation x^2-8x=10?

Answers

Answer:

x = 4 ± [tex]\sqrt{26}[/tex] OR x = 4 - [tex]\sqrt{26}[/tex], 4 + [tex]\sqrt{26}[/tex]

Step-by-step explanation:

To solve these equation we create a trinomial and then solve for x.

First we are going to move all terms to one side and make sure we can set the equation equal to zero. To do so, we are going to subtract 10 from both sides.
x² - 8x - 10 = 10 - 10
Simplify:
x² - 8x - 10 = 0

At this point, we think about if there are any factors of -10 with a sum equal to -8. This is one of the easier ways to factor a trinomial and then solve for x. Unfortunately, no factors of -10 with a sum equal to -10. So, because the equation is now in the form ax² + bx + c = 0, where a and b are the numbers in front of our variables and c is a constant we can use the quadratic formula to solve for x.
a = 1
b = -8
c = -10

The quadratic formula:
x = (-b ± [tex]\sqrt{b^{2}-4ac}[/tex]) / 2a

And with this we can plug and play, simplifying along the way:
x = (-(-8) ± [tex]\sqrt{(-8)^{2}- 4(1)(-10)}[/tex]) / 2(1)
x = (8 ± [tex]\sqrt{64 - (-40)}[/tex]) / 2
x = (8 ± [tex]\sqrt{104}[/tex]) / 2
Factor 104 into 4 times 26 because we can take the square root of 4.
x = (8 ± [tex]\sqrt{4(26)}[/tex]) / 2
x = (8± [tex]2\sqrt{26}[/tex]) / 2
Now we can separate and divide each term in the numerator by the 2 in the denominator to simplify.
x = (8 / 2) ± ([tex]2\sqrt{26}[/tex] / 2)

x = 4 ± [tex]\sqrt{26}[/tex], this can be your answer or you can separate them because of the plus/minus into two solutions:

x = 4 - [tex]\sqrt{26}[/tex], 4 + [tex]\sqrt{26}[/tex]

A bag with 6 marbles has 2 blue marbles, 1 red marble, and 3 yellow marbles. A marble is chosen from the bag at random. What is the probability that it is blue
or red?
Write your answer as a fraction in simplest form.
X

Answers

2/6 or 1/3, in percentage it would be 33.3333333 …%

Sales In Russia the average consumer drank two servings of Coca-Cola® in 1993. This amount appeared to be increasing exponentially with a doubling time of 2 years. Given a long-range market saturation estimate of 100 servings per year, find a logistic model for the consumption of Coca-Cola in Russia and use your model to predict when, to the nearest year, the average consumption reached 50 servings per year.

Answers

To model the consumption of Coca-Cola in Russia, a logistic model can be used. With an initial average consumption of 2 servings in 1993 and a doubling time of 2 years, the model can predict when the average consumption reached 50 servings per year.

A logistic model describes the growth of a population or a quantity that initially grows exponentially but eventually reaches a saturation point. The logistic model is given by the formula P(t) = K / (1 + e^(-r(t - t0))), where P(t) represents the quantity at time t, K is the saturation point, r is the growth rate, and t0 is the time at which the growth starts.

In this case, the initial consumption in 1993 is 2 servings, and the saturation point is 100 servings per year. The doubling time of 2 years corresponds to a growth rate of r = ln(2) / 2. Plugging these values into the logistic model, we can solve for t when P(t) equals 50.

To find the approximate year when the average consumption reached 50 servings per year, we round the value of t to the nearest year.

By using the logistic model with the given parameters, we can predict that the average consumption of Coca-Cola in Russia reached 50 servings per year approximately [insert predicted year] to the nearest year.

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Two sides of a triangle have the following measures. Find the range of possible measures for the third side (x).



5, 8

Answers

The Range of C lies between in the interval 3 < x < 13.

We apply the this theorem:

A triangle with sides A, B and C the sum of the lengths of any two sides of a triangle must be greater than the third side:

1. A + B > C

2. B + C > A

3. A + C > B

Now, According to the question:

We have the two sides of triangle :

First measure of length of triangle is 5

and, second measure of length of triangle is : 8

We have to the find the range of possible measures for the third side (x).

Thus given two sides of A= 5 and B = 8 and C can be:

8 - 5 < x < 8 + 5

3 < x < 13

Hence, Range of C lies between in the interval 3 < x < 13.

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Halla el punto medio del segmento de extremos P (-2,1) y Q (4-7)

Answers

The midpoint of the line segment with endpoints P(-2, 1) and Q(4, -7) is M(1, -3).

To find the midpoint of a line segment, we can use the midpoint formula. The formula states that the midpoint (M) of a line segment with endpoints (x₁, y₁) and (x₂, y₂) can be calculated as follows:

M = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)

Using the given endpoints P(-2, 1) and Q(4, -7), we can substitute the values into the formula to find the midpoint.

For the x-coordinate of the midpoint:

x₁ = -2

x₂ = 4

(x₁ + x₂) / 2 = (-2 + 4) / 2 = 2 / 2 = 1

Therefore, the x-coordinate of the midpoint is 1.

For the y-coordinate of the midpoint:

y₁ = 1

y₂ = -7

(y₁ + y₂) / 2 = (1 + (-7)) / 2 = -6 / 2 = -3

Hence, the y-coordinate of the midpoint is -3.

Combining the x-coordinate and y-coordinate, we have the coordinates of the midpoint M(1, -3).

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Complete Question:

Find the midpoint of the endpoint segment P (-2,1) and Q (4-7)

Suppose 40% of PC gamers in the U.S. say they bought Cyberpunk 2077 on Steam. A random sample of 8 PC gamers is selected. What is the probability at most 2 of the 8 say they bought Cyberpunk 2077 on Steam?
A. 0.2090
B. 0.8936
C. 0.3154
D. 0.6846

Answers

The probability that at most 2 out of 8 randomly selected PC gamers say they bought Cyberpunk 2077 on Steam is 0.8936 (option B).

In this scenario, we are dealing with a binomial distribution, where the probability of success (a PC gamer saying they bought Cyberpunk 2077 on Steam) is 40% or 0.4, and the number of trials is 8. We want to calculate the probability of having at most 2 successes.

To find this probability, we can use the binomial probability formula or a binomial probability calculator. By summing up the probabilities of having 0, 1, or 2 successes, we find that the probability is 0.8936.

In summary, the probability that at most 2 out of 8 PC gamers say they bought Cyberpunk 2077 on Steam is 0.8936 (option B).

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Compute the linear correlation coefficient between the two variables and determine whether a linear relation exists. Round to three decimal places. A manager wishes to determine whether there is a relationship between the number of years her sales representatives have been with the company and their average monthly sales. The table shows the years of service for each of her sales representatives and their average monthly sales (in thousands of dollars). r = 0.717; a linear relation exists r = 0.632; a linear relation exists r= 0.632; no linear relation exists r= 0.717; no linear relation exists

Answers

The linear correlation coefficient between the number of years of service and average monthly sales is r = 0.717, indicating that a linear relation exists between these variables.

The linear correlation coefficient, denoted as r, measures the strength and direction of the linear relationship between two variables. It ranges between -1 and 1, where a value close to 1 indicates a strong positive linear relationship, a value close to -1 indicates a strong negative linear relationship, and a value close to 0 indicates a weak or no linear relationship.

In this case, the given correlation coefficient is r = 0.717, which is moderately close to 1. This indicates a positive linear relationship between the number of years of service and average monthly sales. The positive sign indicates that as the number of years of service increases, the average monthly sales tend to increase as well.

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consider the basis s for r 3 given by s = 2 1 0 , 0 1 2 , 2 0 1 . applying the gram-schmidt process to s produces which orthonormal basis for r 3 ?

Answers

To apply the Gram-Schmidt process to the basis vectors in s = {v1, v2, v3},

Answer : (2*2/√5)

we can follow these steps:

1. Set the first vector in the orthonormal basis as u1 = v1 / ||v1||, where ||v1|| is the norm (magnitude) of v1.

  In this case, v1 = [2, 1, 0]. So, u1 = v1 / ||v1|| = [2, 1, 0] / √(2^2 + 1^2 + 0^2) = [2, 1, 0] / √5.

2. Calculate the projection of v2 onto u1: proj(v2, u1) = (v2 · u1) * u1, where · represents the dot product.

  In this case, v2 = [0, 1, 2] and u1 = [2/√5, 1/√5, 0]. So, proj(v2, u1) = ([0, 1, 2] · [2/√5, 1/√5, 0]) * [2/√5, 1/√5, 0]

  = (0*2/√5 + 1*1/√5 + 2*0/√5) * [2/√5, 1/√5, 0]

  = (1/√5) * [2/√5, 1/√5, 0]

  = [2/5, 1/5, 0].

3. Subtract the projection from v2 to obtain a new vector orthogonal to u1: w2 = v2 - proj(v2, u1).

  In this case, w2 = [0, 1, 2] - [2/5, 1/5, 0] = [0, 4/5, 2].

4. Normalize w2 to obtain the second vector in the orthonormal basis: u2 = w2 / ||w2||.

  In this case, u2 = [0, 4/5, 2] / ||[0, 4/5, 2]|| = [0, 4/5, 2] / √(0^2 + (4/5)^2 + 2^2)

  = [0, 4/5, 2] / √(16/25 + 4) = [0, 4/5, 2] / √(36/25) = [0, 4/5, 2] / (6/5) = [0, 4/6, 10/6] = [0, 2/3, 5/3].

5. Calculate the projection of v3 onto u1 and u2: proj(v3, u1) and proj(v3, u2).

  In this case, v3 = [2, 0, 1], u1 = [2/√5, 1/√5, 0], and u2 = [0, 2/3, 5/3].

  proj(v3, u1) = ([2, 0, 1] · [2/√5, 1/√5, 0]) * [2/√5, 1/√5, 0]

  = (2*2/√5)

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11. 44 solve prob. 11. 43, assuming that the length of the brass rod is increased from 4 ft to 8 ft

Answers

To increase the length of a brass rod by 2%, the temperature should increase by 1000 K, assuming a coefficient of linear expansion of 0.00002K⁻¹.

To solve problem 11.43, we need to calculate the change in temperature (∆T) required to increase the length of the brass rod by 2% when the coefficient of linear expansion (∝) is given as 0.00002K⁻¹.

The formula for the change in length (∆L) due to a change in temperature (∆T) is given by

∆L = ∝ * L0 * ∆T

Where

∆L is the change in length

∝ is the coefficient of linear expansion

L0 is the initial length

∆T is the change in temperature

In this case, we are given that the initial length (L0) is 4 ft and the desired change in length is 2% of the initial length. We can calculate the change in length (∆L) as follows:

∆L = 2% * 4 ft = 0.02 * 4 ft = 0.08 ft

Now, we can rearrange the formula to solve for ∆T:

∆T = ∆L / (∝ * L0)

∆T = 0.08 ft / (0.00002K⁻¹ * 4 ft)

∆T = 0.08 ft / (0.00008 K⁻¹)

∆T = 1000 K

Therefore, to increase the length of the brass rod by 2%, the temperature should increase by 1000 K.

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--The given question is incomplete, the complete question is given below " 11. 44 solve prob. 11. 43, assuming that the length of the brass rod is increased from 4 ft to 8 ft. To increase the length of brass rod by 2% its temperature should increase by:(∝=0.00002 K^−1 ) "--

if an experiment has mutually exclusive outcomes . . .which of the following must be true?
An experiment has three mutually exclusive outcomes, A, B, and C. If P (A) = 0.12, P (B) = 0.61, and P(C) = 0.27, which of the following must be true?
I. A and C are independent
II. P(A and B) =0
III. P(B or C) = P(B) + P(C)
(A) I only
(B) I and II only
(C) I and III only
(D) II and III only
(E) I ,II ,and III only

Answers

The correct answer is (C) I and III only. A and C are not independent events. Statement III is true since the probability of the occurrence of either B or C is the sum of their individual probabilities.

In this scenario, since the outcomes A, B, and C are mutually exclusive, they cannot be independent. Independent events are those where the occurrence or non-occurrence of one event does not affect the probabilities of the other events. Therefore, statement I, which states that A and C are independent, is false.

On the other hand, statement II states that P(A and B) = 0. Since A and B are mutually exclusive outcomes, they cannot occur simultaneously. Therefore, the probability of both A and B occurring together is indeed zero. Hence, statement II is true.

Statement III states that P(B or C) = P(B) + P(C). Since A, B, and C are mutually exclusive, the probability of either B or C occurring is the sum of their individual probabilities. Therefore, statement III is true.

In summary, the correct choices are I and III only. A and C are not independent events, as stated in statement I. However, statement II is true because P(A and B) is indeed 0 for mutually exclusive outcomes. Finally, statement III is also true since the probability of the occurrence of either B or C is the sum of their individual probabilities.

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Find the exact volume of the following.
12 mm
12 mm

Answers

Answer:

V = 144π mm³

Step-by-step explanation:

the volume (V) of a cone is calculated as

V = [tex]\frac{1}{3}[/tex] πr²h ( r is the radius of the base and h the height of the cone )

here diameter of base = 12 , then r = 12 ÷ 2 = 6 and h = 12 , then

V = [tex]\frac{1}{3}[/tex] π × 6² × 12

  = [tex]\frac{1}{3}[/tex] π × 36 × 12

  = π × 12 × 12

  = 144π mm³

The Volume of Cone is 144π mm³.

We have,

Diameter of Base= 12 mm

Radius of Base = 6 mm

Height of Cone = 12 mm

So, the formula for Volume of Cone

= 1/3 πr²h

= 1/3 π (6)² 12

= 4 x 36π

= 144π mm³

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5.2 in
7 in
9 in
4.7 in

Answers

There is no question :(
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