urgent help needed w this pls

The evaluation of the piecewise function gives:

when x = -3, f(x) = -4; when x = 2, f(x) = 0; and when x = 4, f(x) =  2.

when x = -3, w(x) = 2; when x = 2, f(x) = 5; and when x = 4, f(x) = 5

A piecewise function is a function that is defined by multiple sub-functions, each of which applies to a certain range of the input (or domain) values.

We want to evaluate the piecewise function when x = -3, x =2 and x = 4:

        { -4,   x < 2

f(x) = { x-2, -2 ≤ x≤ 4

         {0      x > 4

when x = -3:

f(x) = -4 because x < 2 (i.e. -3 < 2)

when x = 2:

f(x) = x-2

f(2) = 2-2 = 0

when x = 4:

f(x) = x-2

f(2) = 4-2 = 2

        { -x - 1,       x ≤ -3

w(x) = { 2x + 2,  -3 < x < 2

         {5,            x ≥ 2

when x = -3:

w(x) = -x - 1

w(-3) = -(-3) - 1 = 2

when x = 2:

f(x) = 5

when x = 4:

f(x) = 5

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Therefore , the solution of plotting data comes out to be each whisker has a crossbar at the very end that is optional and has no significance in terms of length.

A graph illustrating the correlation between two extra variables is the most common way to present data using a chart. It is also permitted to use diagrams that were manually or digitally drawn. starting at the origin, go 3 units up, then 2 units to the right. It is necessary to display the numbers for the positions 2, 3, and 4 on the reference system. Make your points really clear. 2.3 is represented by the pinkish dot with letter P. For each value in a data collection, you must first create a number line before you can create a line chart.

Here,

The boxplot, in its most basic version, visualizes five sample statistics: the minimum, the smallest value, the mean, the upper quartile, and the maximum.

The plot's box is a rectangle with ends at each quartile that encloses the sample's middle half. Therefore, the box's length represents the sample's interquartile range.

Nothing specific is represented by the box's other dimension. At the sample median, a line is drawn from across box.

Up until they hit the sampling maximum and minimum, whiskers extend from the box's two ends.

Each whisker has a crossbar at the very end that is optional and has no significance in terms of length.

Therefore , the solution of plotting data comes out to be each whisker has a crossbar at the very end that is optional and has no significance in terms of length.

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Answer:

12

Step-by-step explanation:

h(-3)= -(-3)(1-(-3))=

3(4)=12

Answer:

G.1/4

Step-by-step explanation:

The probability of getting two heads when two fair coins are tossed is 1/4 or 0.25. This is because for each coin there are two possible outcomes, heads or tails, and the probability of getting heads is 1/2. Therefore, the probability of getting two heads when both coins are tossed is (1/2) * (1/2) = 1/4. So the correct answer is G. 1/4

The required number of ways to choose a pair of socks, provided that i get two socks of the same color are 50.

Combinations are ways to choose elements from a collection in mathematics where the order of the selection is irrelevant. Let's say we have a trio of numbers: P, Q, and R. Then, combination determines how many ways we can choose two numbers from each group.

We have,

8 white, 6 brown, and 4 blue

So, We need to choose a pair of socks, provided that i get two socks of the same color.

The number of ways are;

Ways to choose 2 white =  C(8,2)  = 28

Ways to choose 2 brown = C(6,2)  = 16

Ways to choose 2 blue  = C(4,2)  = 6

So

28 + 16 +  6  =

50 ways

Thus, required total number of ways are 50.

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Using the triangle sum theorem, the value of x = 37.

The triangle sum theorem states that the sum of the three angles of a triangle is always 180 degrees.

The sum of the angles in a triangle is always 180 degrees, so we can use the triangle sum theorem to find the value of x.

So we can set up the following equation:

80 + 75 + (x - 12) = 180

80 + 75 + x - 12 = 180

Combine like terms:

x + 143 = 180

x = 180 - 143

x = 37

Solving for x, the value of x = 37

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hi

Step-by-step explanation:

Answer: If you are bored, try Khan Academy, or answer questions on brainly.

Answer:

2x+6=x+4

2x-x = 4-6

x= -2

Answer:

x=-2

Step-by-step explanation:

cuz , if u added them together the sum would be -2+6=4 , is that ur question? or I've answered smth that has nothing to do?

According to Westgard and CLIA , 40-100  specimens should be run by each method on the same day for 8 to 20 days to compare a test method with a comparative method.

CLIA stands for  Clinical Laboratory Improvement Amendments  . The regulations under CLIA includes, the federal standards which is applicable to all U.S. facilities or sites which are test human specimens for health assessment or it is used to diagnose, prevent, or treat disease.

The Federal Register is the official daily publication for federal agencies and the organization's notices, proposed regulations, and final rules, as well as executive orders and other presidential papers. The regulations published in the Code of Federal Regulations and enforced by federal agencies are known as final rules.

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Compared to a 95% confidence interval, a 99% confidence interval will be wider.

A confidence interval is a range of values that is likely to contain the true population mean, with a certain level of confidence.

The level of confidence is usually represented as a percentage, such as 95% or 99%. The higher the level of confidence, the wider the confidence interval will be. This is because a higher level of confidence means that the researcher wants to be more certain that the true population mean falls within the interval, so they will make the interval wider to increase the chances of this happening.

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Answer:

To find the angle subtended by a chord at the center of a circle, we can use the formula:

θ = 2 * arcsin (c / 2r)

where θ is the angle subtended by the chord, c is the length of the chord, and r is the radius of the circle.

Step 1: Substitute the given values into the formula

θ = 2 * arcsin (13.2 / (2 * 9.4))

Step 2: Simplify the equation

θ = 2 * arcsin (13.2 / 18.8)

Step 3: Use a calculator or a math table to find the value of arcsin

arcsin (13.2 / 18.8) = 0.636 radians

Step 4: Multiply the value obtained by 2

0.636 * 2 = 1.27 radians

Final Answer: The angle subtended by the chord at the centre of the circle is 1.27 radians or 72.8 degrees

Answer:

ForTheTriangleABOtofindthelengthr

Wehave

sin(

2

α

)=

hypotenuse

opposite

=

OA

AB

=

9.4

6.6

=0.70212

whereAB=

2

13.2

=6.6cm

2

α

=sin

−1

(0.70212)

thenweoptain=

α=44.6°×2

=89.2°

Answer:

b

Step-by-step explanation:

de=40

Answer:

DE = 58 is the incorrect statement

The present ages of the teachers are 25 and 29 years old.

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.

Given that sum of the present ages of two teachers is 54 years. If the age of one teacher is 4 years more than the other, then;

Let the ages of teachers are x and y

x + y = 54

x = 4 + y

So, 4 + y + y = 54

4 + 2y = 54

y = 25

x = 29

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Answer:

y-1=2/3(x+9)

Step-by-step explanation:

Sorry cant really explain well but I am positive this is the right answer.

Answer: [tex]\sqrt[5]{3}-1[/tex]

Step-by-step explanation:

Let the annual rate of increase be [tex]r[/tex].

[tex]3000=1000(1+r)^5\\\\3=(1+r)^5\\\\\sqrt[5]{3}=1+r\\\\r=\sqrt[5]{3}-1[/tex]

x axis described as the independent variable

What is horizontal line?

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x-axis is the horizontal line dividing the plane into parts. The x-axis is also described as  the abscissa and it used for independent variable.

A horizontal line is any straight path that runs from left to right or from right to left. In coordinate geometry, a line is said to be horizontal if two points on it have the same Y-coordinates. Its origins are in the term "horizon." In other words, the horizontal lines and the horizon, or x-axis, are always parallel.

A line that moves from left to right is said to be horizontally oriented. When you look beyond the horizon, you are seeing the dawn over a horizontal line. The x-axis serves as a representation of a horizontal line.

A horizontal line is one that extends from left to right across the full page. This is explained by the fact that horizontal lines are parallel to the horizon. By considering this fact, children can maintain the meaning of horizontal lines. Its root word, "horizon," refers to the line that may be seen separating the earth from the sky.

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The value of n in the function is 1000

A model function is a way of describing a real-life system or situation using mathematical concepts and language

We have the function N(x) = 20x - (10x + n) models the number of sweaters produced where n is a constant.

Since 500 balls of wool were used to produce 4000 sweaters. To find the value of n, substitute x = 500 and N = 4000 into the function. That is:

N(x) = 20x - (10x + n)

4000 = 20(500) - (10(500) + n)

4000 = 10000 - 5000 - n

4000 = 5000 - n

n = 5000 - 4000

n = 1000

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The curve is smooth for [tex]t\neq 0[/tex] on the intervals (-∞, 0), (0, ∞)

We have to consider the curve

                                               [tex]r(t) = 8t^{2}i + 7t^{3}j[/tex]

Now, the objective is to find the open intervals when on which the curve given by the vector valued function is smooth, using the result.

The parametrization of the curve represented by the vector valued function

                                       [tex]r(t) = f(t)i + g(t)j + h(t)k[/tex]

This equation is smooth on an open interval when f'(t), g'(t), and h'(t) are continuous on [tex]l[/tex] and r'(t) [tex]\neq[/tex] 0 for any value of t in the interval.

Now, we know the vector equation:

[tex]r(t) = 8t^{2}i + 7t^{3}j[/tex]

Differentiating r(t) with respect to r,

[tex]r'(t) = 16t i + 21t^{2} j[/tex]

At t = 0, equate r'(t) = 0.

[tex]r'(0) = 16(0) + 21(0)^{2}[/tex]

Therefore, the curve is smooth for all values except 0, as we can see above.

Hence, the curve is smooth for [tex]t\neq 0[/tex] on the intervals (-∞, 0), (0, ∞).

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The possible values of [tex]$m$[/tex] are all real numbers greater than   [tex]$\frac{2}{x^2}$[/tex]

A quadratic equation is an equation of the form ax² + bx + c = 0, where a, b, and c are real numbers and a ≠ 0. It is called a quadratic equation because the highest degree of its unknown variable (x) is two. The solutions of a quadratic equation can be found by solving the equation using the quadratic formula, factoring, or graphing. Quadratic equations are used in many areas of mathematics, from basic algebra to differential equations.

Let [tex]$y = 2x^2mx8$[/tex]

The two distinct real roots of the equation imply that y is a quadratic equation with two distinct real roots.

So,[tex]$y = 0 = 2x^2mx8 \implies 2x^2mx - 8 = 0$[/tex]

Using the quadratic formula , [tex]$m = \frac{8}{2x^2x}$[/tex]

The two distinct real roots of the equation imply that the discriminant of the quadratic equation, [tex]$\Delta = b^2-4ac$[/tex] is greater than 0.

So, [tex]$\Delta = (2x^2)^2-4(2)(-8) > 0 \implies 4x^4 + 64 > 0$[/tex]

[tex]$4x^4 > -64 \implies x^4 > -16$[/tex]

So, [tex]$m > \frac{8}{2x^2x} \implies m > \frac{8}{2x^2(-4)} = \frac{2}{x^2}$[/tex]

Hence, the possible values of m are all real numbers greater than [tex]$\frac{2}{x^2}$[/tex]

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The possible number of the right triangle is 6. Hence option A is the correct option.

What is the right triangle?

A right triangle or right-angled triangle, or more formally an orthogonal triangle, formerly known as a rectangle triangle, is a triangle with one right angle, i.e. two perpendicular sides. Trigonometry is founded on the relationship between the sides and other angles of a right triangle.

Given that △ABC is a right triangle.

The legs of the △ABC are a and b which are integers. The hypotenuse is b+1. Since b is an integer thus b+1 is an integer.

Pythagorean theorem:

The sum of the square of the legs of a right triangle is the square of the hypotenuse.

According to Pythagorean theorem,

a² + b² = (b+1)²

Applying the algebraic formula (a+b)² = a² + b² + 2ab

a² + b² = b² + 2b +1

Cancel out b² from both sides:

a² = 2b + 1

2b is always a positive number since 2 is multiplied with b. Thus 2b+1 is an odd number.

Since a² = 2b + 1, thus a² is an odd number.

The square of an odd number is an odd number. Thus a is an odd number.

Again given that,

b<100

2b < 200

2b + 1< 201

Putting 2b + 1 = a²:

a² < 201

Now putting a=1 in a² < 201:

1² < 201 (true)

Now putting a=3 in a² < 201:

3² < 201 (true)

Now putting a=5 in a² < 201:

5² < 201 (true)

Now putting a=7 in a² < 201:

7² < 201 (true)

Now putting a=9 in a² < 201:

9² < 201 (true)

Now putting a=11 in a² < 201:

11² < 201 (true)

Now putting a=13 in a² < 201:

13² < 201 (true)

Now putting a=15 in a² < 201:

15² < 201 (false)

If a = 1, 2b+1 = 1 which implies b = 0. The length of a side of a triangle is never zero. Therefore a ≠ 1.

Thus the possible values of a are 3,5,7,9,11,13.

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Answer:

123.2

Step-by-step explanation:

First find area of the square ABCD, then the triangle AMN.

Find CD:

sin30 = CD/20

CD = 20(sin30) = 10

CD = AD = 10

Find MD:

cos30 = MD/20

MD = 20(cos30) = 17.32

AM = MD - AD = 17.32 - 10 = 7.32

Area of ABCD = (10)(10) = 100

Find height of triangle AMN:  AN

cos30 = AN/7.32

AN = cos30(7.32) = 6.34

Area of triangle ANM = 1/2(7.32(6.34) = 23.2

Total Area of the shape = 100 + 23.2 = 123.2

Nothing that we can say regarding an we are unsure of whether the terms of an are rising or falling, a passes the Comparison Test and sequence, Since bn, an also converges.

A collection of numbers, or "terms," is referred to as a sequence. Examples of terms are 2, 5, and 8. Some sequences can be made endlessly lengthy by taking advantage of a particular pattern they follow. Use the example of 2,5,8 and add 3 to continue the sequence.

We are unable to comment on an.

This is due to the fact that bn converges, causing a to exceed bn, and as a result, we are unable to determine whether the terms of an are increasing or decreasing.

What can you say about an if a bn for all n? a passes the Comparison Test and converges.

This is due to the fact that since bn converges and a converges since bn, we may infer that the terms of an are likewise decreasing and that an also sequence since bn based on the comparison test.

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The best estimate of the average change in rent each year include the following: C. $40.

Mathematically, the rate of change is also referred to as slope or gradient and it can be calculated by using this formula;

Rate of change, m = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Rate of change, m = (y₂ - y₁)/(x₂ - x₁)

Next, we would determine the rate of change of the value of y with respect to the value of x on the scatter plot, which represents a line that is passing through the points (0, 800) and (10, 1200):

Rate of change, m = (1200 - 800)/(10 - 0)

Rate of change, m = 400/10

Rate of change, m = 40.

Based on the scatter plot, we can reasonably infer and logically deduce that the average rate of change in rent each year is equal to 40 dollars.

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Complete Question:

The scatter plot below shows the average rent (in dollars per month) for a 1-bedroom apartment in New York City each year between 2000 and 2013.

Which of the following is the best estimate of the average change in rent each year?

answer choices

$0.5

$1

$40

$400

Step-by-step explanation:

what we see on the left side is that both terms contain (y + 6).

so, the left side is actually

(y + 6) × (x - 5)

therefore,

(x - 5)

is the missing factor on the right side.

There are a total of 9 women and 6 men on the council, for a total of 15 council members.

If we randomly choose 2 of them to co-chair a committee, the number of ways to choose 2 people of the same gender is:

So the total number of ways to choose 2 people of the same gender is 3+15 = 18.

The total number of ways to choose 2 people without considering their gender is 15 choose 2 = 105

So the probability of choosing 2 people of the same gender is 18/105 = 6/35

So, the probability that these chairpersons are the same gender is 6/35.

Answer:

Step-by-step explanation:

Yes, it is correct for Austin to be excited about the extra money he will make in interest. Interest is a common form of compensation for loaning money to another person, and it is generally expected to be paid back along with the principal amount. In this case, Austin will earn 4% interest on the $20 loan over the course of 3 months, which works out to be a total of $0.80. This is a relatively small amount, but it is still money that Austin would not have had if not for the loan. Therefore, it is reasonable for Austin to be excited about the opportunity to make a little extra money.

If the length of the given rectangle is increasing by 3 in/sec and the width is shrinking at 5 in/sec then the rate of change of its perimeter is 4 in/sec.

Length, L = 9 inches

Width, W = 5 inches

The perimeter of the rectangle is

P = 2L + 2W.

By Differentiating both sides with respect to time t, we get

dP ⁄ dt = 2 × dL ⁄ dt  + 2 × dW ⁄ dt

From the given conditions,

dL ⁄ dt = 3 and dW ⁄ dt = -5

So at the moment when L = 9 and W = 5,

dP ⁄ dt = (2)(3) + 2(−5 )

= 6 - 10

= -4

Therefore, The perimeter of the rectangle is decreasing at a rate of 4 in ⁄ sec.

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Answer:

f

(

x

)

=

9

x

−

4

.

Step-by-step explanation:

The inverse of

f

(

x

)

=

9

x

−

4

is a function

g

(

x

)

such that

f

(

g

(

x

)

)

=

(

f

∘

g

)

(

x

)

=

x

but

f

(

g

(

x

)

)

=

9

g

(

x

)

−

4

=

x

Answer: 51.5 degrees

Step-by-step explanation:

The measure of the included angle is about 51.5 degrees. To find this, we can use the law of sines, which states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is the same for all three sides of the triangle. So, we can set up an equation using the information given: (area)/(0.5*(1.1)(6.6)) = (sin(x)) where x is the included angle. We know that area is 2, so we can put it in the equation: (2)/(0.5(1.1)(6.6)) = (sin(x)) .

Then using sin(x) = 2/(0.5(1.1)*(6.6)) , we can use a calculator to find the sin(x) = 0.094.

and then using a calculator, we can find that x = sin^-1 (0.094) ≈ 5.2 radians. To convert it to degrees, we can multiply it by 180/π ≈ 57.3. So the measure of the included angle is about 57.3 degrees. To the nearest tenth of a degree, it is 57.3, but it can also be rounded off to 51.5 degrees.

The fraction of the total price that the torch is is 4/5.

Let x be the cost of the battery.

We know that the torch cost is 1.50 more than the battery cost. So, the cost of the torch is

x + 1.50

The total cost is the sum of the cost of the battery and the torch, so:

x + (x + 1.50) = 2.50

2x + 1.50 = 2.50

Solving this equation we get,

x = 0.50

Therefore the cost of the battery is 0.50 and the cost of the torch is 2.00.

To find the fraction of the total price that the torch is, we divide the cost of the torch by the total cost:

= (2.00) / (2.50)

= 4/5

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