Maggie has $30 in an account. The interest rate is 10% compounded annually. To the nearest cent, how much will she have in 1 year?
Use the formula B=p(1+r)t, where B is the balance (final amount), p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years. 7th grade ixl m 13

Answers

Answer 1

If he interest rate is 10% compounded annually, after 1 year, Maggie will have $33 in the account to the nearest cent.

To solve this problem, we can use the formula for compound interest:

B = p(1+r)ᵗ

where B is the balance, p is the principal, r is the interest rate expressed as a decimal, and t is the time in years.

In this case, we know that Maggie has $30 in the account, the interest rate is 10% (or 0.10), and she is investing for 1 year. We can plug these values into the formula to find her balance after 1 year:

B = 30(1+0.10)

B = 30(1.10)

B = 33

The formula for compound interest is a useful tool for calculating the growth of an investment over time, taking into account both the principal and the interest rate.

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Related Questions

Determine the equation of the circle with center
(
0
,
0
)
(0,0) containing the point
(
53
,

7
)
(
53

,−7).

Answers

The equation of the circle with center (0, 0) and containing the point (53, -7) is x² + y² = 2858

What is the equation of the circle?

The standard form equation of a circle with center (h, k) and radius r is:

(x - h)² + (y - k)² = r²

Given the center is (0, 0):

h = 0

k = 0

And given the point is (53, -7).

The distance between the center and the given point is equal to the radius of the circle.

Using the distance formula, we can calculate the radius:

[tex]r = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\\\r = \sqrt{( 53 - 0 )^2+(-7 - 0)^2} \\\\r = \sqrt{( 53 )^2+(-7)^2} \\\\r = \sqrt{2809+ 49} \\\\r = \sqrt{2858}[/tex]

Substituting the values into the equation, we get:

(x - h)² + (y - k)² = r²

(x - 0)² + (y - 0)² = (√2858)²

Simplify

x² + y² = 2858

Therefore, the equation of the circle is x² + y² = 2858.

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true or false: statistical inference can be defined as making generalizations about the population based on sample data.

Answers

True. Statistical inference involves drawing conclusions about a population based on sample data, using statistical techniques such as hypothesis testing and confidence intervals.

Statistical inference is a fundamental concept in statistics that allows us to make inferences or draw conclusions about a population based on a sample. It involves applying statistical techniques to analyze sample data and make generalizations or predictions about the larger population from which the sample was drawn.

By using methods like hypothesis testing and confidence intervals, statistical inference helps us estimate population parameters, test hypotheses, and assess the reliability of our findings. Through the process of sampling and applying statistical techniques, we aim to draw meaningful conclusions about the characteristics, relationships, or effects within a population.

Therefore, it is accurate to say that statistical inference involves making generalizations about the population based on sample data, allowing us to make informed decisions and draw meaningful insights from limited observations.

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A ballet school wants to buy new slippers for students in a class. They collected the sizes and displayed them in a line plot.

A horizontal number line starting at 3.5 with tick marks every 0.5 units up to 8. The following values are labeled: the value of 4 has one dot, the value of 4.5 has two dots, the value of 5 has two dots, the value of 6 has one dot, the value of 6.5 has two dots, the value of 7 has one dot, and the value of 8 has one dot. The image is titled Ballet Shoe Sizes.

What is the range, and what does it mean in terms of this data set?

The range is 4.5, and it means that the data varies by a value of 4.5.
The range is 3.5, and it means that it is the value that occurs the most.
The range is 4.0, and it means that the data varies by a value of 4.0.
The range is 4.0, and it means that it is the value that is the smallest.

Answers

The range is 4.0, which means that it is the value that is the smallest. Thus, the correct option is D.

Subtracting the lowest value from the greatest value in the data set will allow us to determine the range. The line plot shows that 4 and 8 are the least and biggest values, respectively. Consequently, the range is:

The range is equal to the largest and smallest values.

Range = 8 - 4

Range = 4

The data set has a range of 4, which indicates that there is a 4-unit variation in the data. The sizes of ballerina slippers in this data collection, specifically, range from 4 to 8.

Thus, the correct option is D.

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what can you say about the liquidity premium whom the shield ourve le inverted. a) always negative b) always positive c) depends on the benchmark interost ratos d) none of them

Answers

The correct answer is (c) depending on the benchmark interest rates. The liquidity premium can be positive or negative, depending on market conditions and the risk associated with specific securities.

It seems like there are some typos in your question, but I believe you're asking about the liquidity premium when the yield curve is inverted. In this context, I'll include the terms "ratio," "liquidity, and "negative" in my answer.

The liquidity premium is the additional return that investors demand by holding securities with lower liquidity or higher risk. When the yield curve is inverted, it generally indicates that short-term interest rates are higher than long-term interest rates. This can be a result of higher demand for long-term bonds, which drives their prices up and yields down.

In such a situation, the liquidity premium is:

a) not always negative, because an inverted yield curve doesn't necessarily mean that the liquidity of the market is negatively impacted. The ratio of liquid to illiquid assets can still be favorable even when the yield curve inverts.

b) not always positive, as the premium depends on the overall market conditions and risk factors associated with specific securities.

c) It depends on the benchmark interest rates, which are a key determinant of the yield curve shape. When benchmark interest rates change, the yield curve can either steepen, flatten, or invert, affecting the liquidity premium accordingly.

So the correct answer is (c) depending on the benchmark interest rates. The liquidity premium can be positive or negative, depending on market conditions and the risk associated with specific securities.

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determine if the following statement is true or false. to perform a one-way anova, the populations must have the same variance.

Answers

The statement is false. One-way ANOVA is a statistical test used to compare the means of three or more groups that are independent of each other. However, it does not assume that the populations have the same variance.

Instead, one of the assumptions of one-way ANOVA is that the populations being compared have equal variances, which means that the variation within each group is the same. This assumption is called homogeneity of variances or homoscedasticity.

If the populations do not have equal variances, it can lead to biased results and inaccurate conclusions. In such cases, a modified version of one-way ANOVA called Welch's ANOVA can be used, which does not assume equal variances among the groups.

To test for the homogeneity of variances assumption in one-way ANOVA, researchers can use statistical tests such as Levene's test or Bartlett's test. These tests assess whether the variances of the groups are significantly different from each other. If the results of these tests are significant, it indicates that the assumption of equal variances has been violated, and a modified version of ANOVA should be used instead.

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a deck of playing cards contains 52 cards, four of which are aces. (round your answers to four decimal places.) (a) what is the probability that the deal of a five-card hand provides a pair of aces? (b) what is the probability that the deal of a five-card hand provides exactly one ace? (c) what is the probability that the deal of a five-card hand provides no aces? (d) what is the probability that the deal of a five-card hand provides at least one ace?

Answers

Answer: a)0.0399, b)0.2995, c)0.6588, d)0.3412

Step-by-step explanation:

It is the same exact formula as the only other user here made, it's just that their final answer is wrong. Just put it in your calculator (the formulas of the other users) and these are the answers you should be getting

Answer:

  (a)  0.0399

  (b)  0.2995

  (c)  0.6588

  (d)  0.3412

Step-by-step explanation:

You want the probability distribution in 5-card hands for 2, 1, 0, and not 0 aces.

Probability

The probability of some number of aces is the product of the ways that number of aces can be drawn from the 4 in the deck, multiplied by the number of ways the remaining cards in the hand can be drawn from the 48 non-aces in the deck, all divided by the number of possible 5-card hands.

P(2 aces)

  P(2 aces) = 4C2 · 48C3 / 52C5 ≈ 0.0399

P(1 ace)

  P(1 ace) = 4C1 · 48C4 / 52C5 ≈ 0.2995

P(0 aces)

  P(0 aces) = 48C5 / 52C5 ≈ 0.6588

P(>0 aces)

  P(>0 aces) = 1 -P(0 aces) = 1 -0.6588 = 0.3412

__

Additional comment

  nCk = n!/(k!(n-k)!) . . . the number of ways k can be chosen from n

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in problems 11–16, find a general solution of the system x′1t2 = ax1t2 for the given matrix a.

Answers

To find the general solution of the system x′1t2 = ax1t2 for the given matrix a, we need to:
1. Find the eigenvalues of a by solving the characteristic equation det(A - λ I) = 0.
2. Find the eigenvectors of a by solving the system (A - λ I) x = 0 for each eigenvalue λ.

To find the general solution of the system x′1t2 = ax1t2 for the given matrix a, we need to first find the eigenvalues and eigenvectors of the matrix a.

Let A be the matrix a and λ be an eigenvalue of A. Then we have:
A x = λ x

where x is the eigenvector corresponding to λ.

To find the eigenvalues and eigenvectors of A, we solve the characteristic equation:
det(A - λ I) = 0

where I is the identity matrix. This equation gives us the eigenvalues of A. Once we have the eigenvalues, we can find the eigenvectors by solving the system (A - λ I) x = 0.

Once we have the eigenvalues and eigenvectors, the general solution of the system x′1t2 = ax1t2 is given by:
x1(t) = c1 eλ1t v1 + c2 eλ2t v2 + ... + cn eλnt vn

where λ1, λ2, ..., λn are the distinct eigenvalues of A and v1, v2, ..., vn are the corresponding eigenvectors. The constants c1, c2, ..., cn are determined by the initial conditions of the system.

In summary, to find the general solution of the system x′1t2 = ax1t2 for the given matrix a, we need to:

1. Find the eigenvalues of a by solving the characteristic equation det(A - λ I) = 0.
2. Find the eigenvectors of a by solving the system (A - λ I) x = 0 for each eigenvalue λ.
3. Use the eigenvalues and eigenvectors to write the general solution of the system as x1(t) = c1 eλ1t v1 + c2 eλ2t v2 + ... + cn eλnt vn, where the constants c1, c2, ..., cn are determined by the initial conditions of the system.

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DEF ~ GEH What is the missing value of q?

Answers

Answer:

Step-by-step explanation:

Line DF equals 20 and Line EF equals 15

Since the triangle is congruent we can set up the ratio:

15:20 equals 45:q

after setting this ratio as a fraction:

15/20 equals 45/q

we can cross multiple

20x45=900

900 dived by 15 =60

q=60

Answer:

60

Step-by-step explanation:

These are similar triangles so we can write the following equation to find the value of q:

[tex] \frac{q}{20} = \frac{45}{15} [/tex]

Cross multiply fractions.

15q = 900

Divide both sides by 15.

q = 60

If two legs of a right triangle are 9 and 11, find the hypotenuse. Round to the
nearest hundredth.

Answers

Hypotenuse = √11^2 + 9^2 = √202 = 14,21

which ordered pairs are solutions to this system of inequalities?
{ x + 5y > 8
{ 4x - y < 6
select each answer
a. (−1, 5)
b. (0, 4)
c. (10, 2)
d. (2, −3)
e. (−4, 1)
f. (−6, 7)

Answers

(a) (-1, 5), (b) (0, 4), and (f)  (-6, 7) are the solution to the inequality.

To check which ordered pairs are solutions to the system of inequalities:

{ x + 5y > 8

{ 4x - y < 6

We can substitute each ordered pair into both inequalities and check if they are true or false.

a. (-1, 5)

x + 5y > 8 becomes -1 + 5(5) > 8 which is true

4x - y < 6 becomes 4(-1) - 5 < 6 which is true

Since both inequalities are true, (-1, 5) is a solution to the system of inequalities.

b. (0, 4)

x + 5y > 8 becomes 0 + 5(4) > 8 which is true

4x - y < 6 becomes 4(0) - 4 < 6 which is true

Since both inequalities are true, (0, 4) is a solution to the system of inequalities.

c. (10, 2)

x + 5y > 8 becomes 10 + 5(2) > 8 which is true

4x - y < 6 becomes 4(10) - 2 < 6 which is false

Since the second inequality is false, (10, 2) is not a solution to the system of inequalities.

d. (2, -3)

x + 5y > 8 becomes 2 + 5(-3) > 8 which is false

4x - y < 6 becomes 4(2) - (-3) < 6 which is true

Since the first inequality is false, (2, -3) is not a solution to the system of inequalities.

e. (-4, 1)

x + 5y > 8 becomes -4 + 5(1) > 8 which is false

4x - y < 6 becomes 4(-4) - 1 < 6 which is true

Since the first inequality is false, (-4, 1) is not a solution to the system of inequalities.

f. (-6, 7)

x + 5y > 8 becomes -6 + 5(7) > 8 which is true

4x - y < 6 becomes 4(-6) - 7 < 6 which is true

Since the second inequality is false, (-6, 7) is a solution to the system of inequalities.

Therefore, the solutions are (a) (-1, 5), (b) (0, 4), and (f)  (-6, 7).

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What is the smallest integer of 3x+4>=14

Answers

The smallest integer value of x that satisfies the inequality 3x+4>=14 is 4.

To find the smallest integer value of x that satisfies the inequality 3x+4>=14, we need to isolate x on one side of the inequality sign.

First, we subtract 4 from both sides of the inequality to get:

3x >= 10

Next, we divide both sides of the inequality by 3 to get:

x >= 10/3

So any value of x that is greater than or equal to 10/3 will satisfy the inequality 3x+4>=14. However, since x is an integer, we need to round up to the smallest integer value that satisfies the inequality.

The smallest integer that is greater than or equal to 10/3 is 4, so the smallest integer value of x that satisfies the inequality is 4.

To check this, we can substitute x=4 back into the original inequality:

3(4) + 4 >= 14

12 + 4 >= 14

16 >= 14

Since 16 is indeed greater than or equal to 14, we have verified that x=4 is a valid solution to the inequality.

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The 59 responses to the awesome survey are shown below.

If a student is randomly selected, what is the probability that they would pick a room filled with computers or pick a room filled with cupcakes?
Round your answer to the nearest hundreth.

Answers

The probability that a student randomly selected will pick a room filled with computers or pick a room filled with cupcakes is 0.2542, or about 25.42%.

The total number of rooms is the sum of the rooms filled with computers, pillows, Legos, cupcakes, and My Little Ponies:

Total rooms = Computers + Pillows + Legos + Cupcakes + My Little Ponies = 12 + 29 + 12 + 3 + 3 = 59

The number of rooms filled with computers is 12, and the number of rooms filled with cupcakes is 3.

To calculate the probability of selecting a room filled with computers or a room filled with cupcakes, we add the individual probabilities:

P(Computers or Cupcakes) = P(Computers) + P(Cupcakes)

= (12 / 59) + (3 / 59)

= 15 / 59

= 0.2542

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1. Solve for x in the inequality t 1-4x +52 3x-2 and illustrate + lo the answer 5 the number line.​

Answers

The solution for x in the inequality 1 - 4x + 5 > 3x - 2 is x < 8/7

How to solve for x in the inequality

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

1 - 4x + 5 > 3x - 2

Collect the like terms in the expression

So, we have

-4x - 3x > -2 - 1 - 5

When the like terms are evaluated, we have

-7x > -8

Divide both sides by -7

x < 8/7

Hence, the solution for x in the inequality is x < 8/7

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Assume C is the center of the circle. What is μ(Options:

108°

27°

43°

124°

Answers

The measure of the angle μ∠ABD subtended by the arc AD at the circumference is equal to 27°

What is angle subtended by an arc

The angle subtended by an arc of a circle at it's center is twice the angle it substends anywhere on the circles circumference. Also the arc measure and the angle it subtends at the center of the circle are directly proportional.

arc AD = 2(μ∠ABD)

Also arc AD = 54°

2(μ∠ABD) = 54°

μ∠ABD = 54°/2 {divide through by 2}

μ∠ABD = 27°

Therefore, the measure of the angle μ∠ABD subtended by the arc AD at the circumference is equal to 27°

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a boy owns 1 pairs of pants, 7 shirts, 2 ties, and 5 jackets. how many different outfits can the boy wear to school if each outfit must consist of one of each item?

Answers

Answer:

I believe the boy would have 1 different outfit due to the only pair of pants but there also could be 7 different outfits if he wore the same pants each day with a different shirt and tie or shirt and jacket.

Step-by-step explanation:

I do not know if I’m correct but I hope I am. I still hope this helps! ^.^’

find the matrix a' for t relative to the basis b'. t: r2 → r2, t(x, y) = (2x y, y), b' = {(−4, 1), (1, −1)}

Answers

Therefore, the matrix [A'] for T relative to the basis B' is:

[A'] = | -1 0 |

        | 3 1 |

To find the matrix [A'] for the linear transformation T relative to the basis B', we need to express the images of the basis vectors of B' under T in terms of the basis vectors of B'. Let's calculate it step by step:

The basis B' is given by:

B' = {(-4, 1), (1, -1)}

We want to find the images of the basis vectors of B' under T, which is defined as:

T(x, y) = (2x + y, y)

Let's find the image of the first basis vector (-4, 1) under T:

T(-4, 1) = (2*(-4) + 1, 1) = (-7, 1)

Now, let's find the image of the second basis vector (1, -1) under T:

T(1, -1) = (2*1 + (-1), -1) = (1, -1)

The images of the basis vectors under T, relative to the basis B', are:

(-7, 1) and (1, -1)

Now, we need to express these images as linear combinations of the basis vectors of B'.

Let's write the images in terms of B':

(-7, 1) = (-1)(-4, 1) + (3)(1, -1)

(1, -1) = (0)(-4, 1) + (1)(1, -1)

So, [A'] =

|-1 0 |

| 3 1 |

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If the cost of 9 candies is dollar 36 then find the cost of 3 dozen candies

Answers

Answer:

[tex]\huge\boxed{\sf \$144}[/tex]

Step-by-step explanation:

1 dozen = 12 pieces

So, 3 dozen candies = 3 × 12

3 dozen candies = 36 candies

Solution:

Given that,

9 candies = $36

Using unitary method

Divide both sides by 9

1 candy = $36/9

1 candy = $4

Now, multiply both sides by 36

36 candies = $4 × 36

36 candies = $144

[tex]\rule[225]{225}{2}[/tex]

HELP PLEASE
The box plots display data collected when two teachers asked their classes how many pencils they lose in a school year.

A box plot uses a number line from 5 to 47 with tick marks every one unit. The box extends from 8 to 14 on the number line. A line in the box is at 11. The lines outside the box end at 7 and 45. The graph is titled Mr. Johnson's Class, and the line is labeled Number Of Pencils.

A box plot uses a number line from 0 to 51 with tick marks every one unit. The box extends from 12 to 21 on the number line. A line in the box is at 14.5. The lines outside the box end at 0 and 50. The graph is titled Mr. Simpson's Class, and the line is labeled Number Of Pencils.

Which class lost the most pencils overall based on the data displayed?

Mr. Simpson's class; it has a larger median value 14.5 pencils
Mr. Johnson's class; it has a larger median of 11 pencils
Mr. Simpson's class; it has a narrow spread in the data
Mr. Johnson's class; it has a wide spread in the data

Answers

Based on the data displayed, Mr. Simpson's class lost the most pencils overall.

The median value for Mr. Simpson's class is 14.5 pencils, which is higher than the median value for Mr. Johnson's class, which is 11 pencils.

The box plot for Mr. Simpson's class also has a narrower spread in the data, which means that the data is more consistent and less variable compared to Mr. Johnson's class, which has a wider spread in the data.

Therefore, based on the given information, we can conclude that Mr. Simpson's class lost the most pencils overall.

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Select the correct answer. How many solutions does this system of equations have y=xcubed + x + 3 and y=-2x - 5? A. no real solutions B. 1 real solution C. 2 real solutions D. 3 real solutions

Answers

Answer:

A

Step-by-step explanation:

To determine the number of solutions for the system of equations y = x^3 + x + 3 and y = -2x - 5, we need to find the intersection points of the two equations.

Setting the expressions for y equal to each other:

x^3 + x + 3 = -2x - 5

Rearranging the equation:

x^3 + x + 2x + 8 = 0

x^3 + 3x + 8 = 0

Solving this cubic equation, we find that it does not have any rational solutions. Therefore, there are no real solutions for this system of equations.

The correct answer is:

A. no real solutions

(If you like this answer i would appreciate if u give brainliest but otherwise, i hope this helped ^^)

Solve using long division, (x^3+3x^2-x-7)/(x-1)

thank you!!!

Answers

Answer:

Step-by-step explanation:

hope this helps . Please mark my answer as best

Find all exact solutions on the interval 0≤θ≤2π. (Enter the answers as a comma-separated list.)tan(θ)=−1.

Answers

The exact solutions for the equation tan(θ) = -1 in the interval 0≤θ≤2π are θ = (3π)/4 and θ = (7π)/4.

To find all exact solutions on the interval 0≤θ≤2π for the equation tan(θ) = -1, follow these steps:

Step 1: Identify the principal angles where tan(θ) = -1.
The tangent function is negative in the second and fourth quadrants.

Recall that tan(θ) = sin(θ) / cos(θ). In the second quadrant, sin(θ) is positive and cos(θ) is negative. In the fourth quadrant, sin(θ) is negative and cos(θ) is positive.

The principal angles where tan(θ) = -1 are θ = (3π)/4 and θ = (7π)/4, as these angles have equal magnitude for sin(θ) and cos(θ) but opposite signs.

Step 2: Check if the principal angles are within the given interval.
Both (3π)/4 and (7π)/4 lie within the interval 0≤θ≤2π.

Step 3: List the exact solutions.
The exact solutions for the equation tan(θ) = -1 in the interval 0≤θ≤2π are θ = (3π)/4 and θ = (7π)/4.

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For two events E1 and E2, can we find the probability of E1 ∩ E2 by any way other than adding the two individual probabilities and subtracting the probability of the intersection?

Answers

In case that E1 and E2 are independent events, we have that the probability is obtained as follows:

P(E1 and E2) = P(E1) x P(E2).

Hence there is a different way to obtain the probability.

How to calculate a probability?

The parameters that are needed to calculate a probability are given as follows:

Number of desired outcomes in the context of a problem/experiment.Number of total outcomes in the context of a problem/experiment.

Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes.

The and probability is calculated as follows:

P(E1 and E2) = P(E1) + P(E2) - P(E1 or B).

However, in the case of independent events, we can simply multiply the probabilities, as follows:

P(E1 and E2) = P(E1) x P(E2).

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Which expression is equivilant to (2/7)^3
1.2 x 2/7
2.3 x 2/7
3.2/7 x 2/7
4.2/7 x 2/7 x 2/7

Answers

Answer:

2/7 × 2/7 ×2/7 is equivalent

3.6=^0
A. 3
B. 1
C.0

Answers

Answer:

C=0

Step-by-step explanation:

write the sum of sigma notation in expanded form n 3 σ i=1, j^2

Answers

Here, the outer sum is over the variable $i$ and it ranges from $1$ to $n$. For each value of $i$, the inner sum is over the variable $j$ and it ranges from $1$ to $3$.

The expression $j^2$ is the summand, which is added for each value of $j$.

The given sigma notation is:

n

___

\    j^2

/___

j=1

Expanding this sigma notation, we have:

= 1^2 + 2^2 + 3^2 + ... + (n-1)^2 + n^2

= (1 + 4 + 9 + ... + (n-1)^2) + n^2

The sum of squares up to n-1 can be expressed using the formula:

1^2 + 2^2 + 3^2 + ... + (n-1)^2 = n(n-1)(2n-1)/6

Substituting this in the above expression, we get:

= n(n-1)(2n-1)/6 + n^2

= (2n^3 - 3n^2 + n)/6

Therefore, the expanded form of the given sigma notation is (2n^3 - 3n^2 + n)/6.

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(q61) Using the table of integrals, solve

Answers

The expression gotten from integrating  [tex]\int\limits {\frac{3}{((3x)^2+ 4)^\frac{3}{2}}} \, dx[/tex] is (a) [tex]\frac{3x}{4\sqrt{9x^2 + 4}} + c[/tex]

How to integrate the expression

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

[tex]\int\limits {\frac{3}{((3x)^2+ 4)^\frac{3}{2}}} \, dx[/tex]

Expand the expression

So, we have

[tex]\int\limits {\frac{3}{((3x)^2+ 4)^\frac{3}{2}}} \, dx = 3\int\limits {\frac{1}{((3x)^2+ 4)^\frac{3}{2}}} \, dx[/tex]

When integrated, we have

[tex]\int\limits {\frac{1}{((3x)^2+ 4)^\frac{3}{2}}} \, dx = \frac{x}{4\sqrt{9x^2 + 4}}[/tex]

So, the expression becomes

[tex]\int\limits {\frac{3}{((3x)^2+ 4)^\frac{3}{2}}} \, dx = \frac{3x}{4\sqrt{9x^2 + 4}} + c[/tex]

Hence, integrating the expression  [tex]\int\limits {\frac{3}{((3x)^2+ 4)^\frac{3}{2}}} \, dx[/tex] gives (a) [tex]\frac{3x}{4\sqrt{9x^2 + 4}} + c[/tex]

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Probability Distributions for Discrete Random Variables

Consider the discrete random variable, X = customer satisfaction, shown:
X 1 2 3 4 5
P(x) 0.1 0.2 ? 0.3 0.2

a. What is P(×=3)?

b. What is P(x < 3)?

c. What is P(2<_ X < 5) ?

Answers

The correct answers according to the given Probability Distributions for Discrete Random Variables:

a. [tex]\(P(X = 3) = 0.2\) (or 20\%)[/tex]

b. [tex]\(P(X < 3) = 0.3\) (or 30\%)[/tex]

c. [tex]\(P(2 < X < 5) = 0.5\) (or 50\%)[/tex]

a. P(X = 3) is denoted as [tex]\(P(X = 3)\)[/tex]. Based on the information given, the missing probability [tex]\(P(X = 3)\)[/tex] can be calculated by subtracting the sum of the other probabilities from 1. Since the sum of the probabilities for the other values [tex](1, 2, 4, and \ 5) \ is \ 0.1 + 0.2 + 0.3 + 0.2 = 0.8[/tex], we can calculate:

[tex]\(P(X = 3) = 1 - 0.8 = 0.2\)[/tex]

Therefore, [tex]\(P(X = 3) = 0.2\) (or 20\%).[/tex]

b. P(X < 3) is denoted as [tex]\(P(X < 3)\)[/tex], which is equal to the sum of the probabilities for [tex]\(X = 1\)[/tex] and [tex]\(X = 2\)[/tex]:

[tex]\[P(X < 3) = P(X = 1) + P(X = 2) = 0.1 + 0.2 = 0.3\][/tex]

c. To calculate [tex]\(P(2 < X < 5)\)[/tex], we need to sum the probabilities of [tex]\(X\)[/tex] taking on values between 2 and 5, exclusively. In this case, we can sum the probabilities corresponding to [tex]\(X = 3\)[/tex] and [tex]\(X = 4\),[/tex] as these values satisfy [tex]\(2 < X < 5\)[/tex]:

[tex]\[P(2 < X < 5) = P(X = 3) + P(X = 4) = 0.2 + 0.3 = 0.5\][/tex]

Therefore, [tex]\(P(2 < X < 5) = 0.5\) (or\ 50\%).[/tex]

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Explain why the relation R on 10, 1, 6} given by R = {(0, 0), (1, 1), (6, 6), (0, 1), (1,0), (1, 6), (6, 1)} is not an equivalence relation. Be specific. The relation is not or example, 0 R 1, 1 R6, but 0 R Select reflexive symmetric transitive

Answers

To determine whether a relation is an equivalence relation, we need to check three properties: reflexive, symmetric, and transitive.

Reflexive property: For all a ∈ A, (a, a) ∈ R.

Symmetric property: For all a, b ∈ A, if (a, b) ∈ R, then (b, a) ∈ R.

Transitive property: For all a, b, c ∈ A, if (a, b) ∈ R and (b, c) ∈ R, then (a, c) ∈ R.

Let's check each property for the given relation R on {0, 1, 6}.

Reflexive property: (0, 0), (1, 1), and (6, 6) are in R, so the reflexive property holds for these elements. However, (1, 1) is the only element in R that satisfies this property. (0, 0) and (6, 6) are not enough to establish the reflexive property for the relation R.

Symmetric property: (0, 1) and (1, 0) are in R, but (1, 0) is not in R. Therefore, the symmetric property does not hold for the relation R.

Transitive property: (0, 1) and (1, 6) are in R, but (0, 6) is not in R. Therefore, the transitive property does not hold for the relation R.

Since the relation R does not satisfy all three properties, it is not an equivalence relation.

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Is this variable discrete or continuous? Why? The number of patients that a nurse cares for in the emergency room. • Continuous because there are an uncountable number of possible outcomes • Neither discrete nor continuous • Discrete because there are a countable number of possible outcomes that can be listed • Continuous because there are a countable number of possible outcomes that can be listed • Discrete because there are an uncountable number of possible outcomes

Answers

The number of patients that a nurse cares for in the emergency room is a continuous variable. This is because the number of patients can take on any value within a certain range, for example, it can range from zero to infinity.

Additionally, the number of patients that a nurse cares for can take on fractional values, such as 3.5 patients. Therefore, it is not possible to list out all the possible outcomes for this variable, as there are an infinite number of possible outcomes.

In contrast, a discrete variable takes on specific values that can be counted, such as the number of children in a family, where the possible values are 0, 1, 2, 3, and so on.

It is important to distinguish between discrete and continuous variables, as this affects the type of statistical analysis that can be performed on the data. Continuous variables are analyzed using methods such as correlation and regression analysis, while discrete variables are analyzed using methods such as frequency tables and chi-square tests.

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find the explicit solution of the following initial value problem. y ′ = 2xy 1 x 2 , y(0) = 3.

Answers

The explicit solution to the initial value problem is y = [tex]3e^{x^2/y_1}[/tex]

The given initial value problem is y′ = 2xy₁/x², y(0) = 3. Here, y′ represents the derivative of y with respect to x, and y₁ represents a function of x that is multiplied by y.

To begin, we can rewrite the differential equation as y′/y = 2x/y₁ x². Notice that the left-hand side is in the form of the derivative of ln(y), so we can integrate both sides with respect to x to obtain

=> ln(y) = x²/y₁ + C,

where C is a constant of integration. Exponentiating both sides yields

[tex]y = e^{x^2/y_1+C}[/tex]

which can be simplified to

[tex]y = Ce^{x^2/y_1}[/tex]

by combining the constant of integration and the constant e^C into a single constant C.

Now we can use the initial condition y(0) = 3 to find the value of C. Substituting x = 0 and y = 3 into the equation

[tex]y = Ce^{x^2/y_1}[/tex]

we get

[tex]3 = Ce^{0/y_1}[/tex]

which simplifies to 3 = C.

Therefore, the explicit solution to the initial value problem is [tex]y=3e^{x^2/y_1}[/tex]

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