PLEASE HELP
What is the value of f(4)?

Answer:

Prime factorisation of the numbers -

\( \\ \sf \: 35 = 7 \times \underline5 \\ \\ \sf \: 20 = \underline5 \times 4 \\ \\ \sf \: 15 = 3 \times \underline5 \\ \)

As, we can see that the 5 is common in the both three numbers. So,

GCF, greatest common factor (35, 20, 15) = 5

Answer: 3/4, 5/8, 9/16, 31/32, etc.

Step-by-step explanation: Any fraction above the 1/2 ratio, but below the full number will work. (i.e. any number above 16 for 32nds, but below 32. So 17/32, 18/32, 19/32, etc.)

Answer:

m∠JKM = 63°

m∠MKL = 27°

Step-by-step explanation:

Since ∠JKL is a right angle. This means that by summing up both m∠JKM and m∠MKL will result in the same as ∠JKL figure. Thus, m∠JKM + m∠MKL = m∠JKL which is 90° by a right angle definition.

\(\displaystyle{\left(12x+3\right)+\left(6x-3\right) = 90}\)

Solve the equation for x:

\(\displaystyle{12x+3+6x-3 = 90}\\\\\displaystyle{18x=90}\\\\\displaystyle{x=5}\)

We know that x = 5. Next, we are going to substitute x = 5 in m∠JKM and m∠MKL. Thus,

m∠JKM = 12(5) + 3 = 60 - 3 = 63°

m∠MKL = 6(5) - 3 = 30 - 3 = 27°

The regression analysis provides important insights into the relationship between single-parent households and student math performance.

To begin our analysis, we will run a simple linear regression of math4 on pctsgle. This will help us understand the relationship between the percentage of single-parent households in a school's ZIP code and the math performance of the students in that school.

Mathematically, the simple linear regression model can be written as:

math4 = β₀ + β₁pctsgle + ε

where math4 represents the average math score for a given school, pctsgle represents the percentage of single-parent households in the school's ZIP code, β₀ and β₁ are the intercept and slope coefficients respectively, and ε represents the error term.

After running the regression, we will obtain the following results:

math4 = 63.91 - 0.52pctsgle

Interpreting the results, we can see that for every one percent increase in the percentage of single-parent households in a school's ZIP code, the average math score of the students in that school decreases by 0.52 points.

The effect of single parenthood may seem small based on the slope coefficient of -0.52. However, it is important to note that this is just one variable and there may be other factors that could be contributing to the decrease in math performance.

Therefore, further analysis may be needed to fully understand the impact of single-parent households on student math performance.

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Complete Question:

Use the data in MEAPSINGLE to study the effects of single-parent households on student math performance. These data are for a subset of schools in southeast Michigan for the year 2000. The socioeconomic variables are obtained at the ZIP code level (where ZIP code is assigned to schools based on their mailing addresses).

Run the simple regression of math4 on pctsgle and report the results in the usual format. Interpret the slope coefficient. Does the effect of single parenthood seem large or small?

The ending balance is in each case;

1) $45258

2) $352.95

3) $514.6

4) $9540

Simple interest is a type of interest calculation that is applied to a loan or deposit, where interest is calculated as a fixed percentage of the principal amount over a specified time period. Simple interest is calculated based on the formula:

I = P * r * t

where I is the interest amount, P is the principal amount, r is the interest rate as a decimal, and t is the time in years.

1) SI = 39,700 * 2 * 7/100

= 5558

Ending balance =  $45258

2) 195 * 9 * 9/100

= 157.95

Ending= $352.95

3) 415 * 4 * 6/100

= 99.6

Ending balance = $514.6

4) 9,000  * 3 *2/100

= 540

Ending balance = $9540

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Answer:

196.48

Step-by-step explanation:

Area of the semi-circle:

A= (πr^2)/2

A= (3.14 x 64)/2

A= 100.48

Area of triangle:

A= 1/2bh

A= 1/2(16)(12)

A= 96

96 + 100.48= 196.48

brainliest pls

Step-by-step explanation:

Area of the given figure= area of semicircle + area of triangle

= 1/2 py r²+ 1/2 × b× h

= 1/2×22/7×8+1/2×16×12

= 760/7 m²

Answer:

360 miles

Step-by-step explanation:

(4 x 80) + 40

Can I have brainlyiest

Answer:

1.5 each friend

Step-by-step explanation:

6 divided by 4 = 1.5

A 40 gram sample of a substance that’s used for drug research has a k-value of 0.1472. The substance's half-life, in days, is approximately 4.7 days.

The half-life of a substance is the time it takes for half of the substance to decay or undergo a transformation. The half-life can be determined using the formula:

t = (0.693 / k)

where t is the half-life and k is the decay constant.

In this case, we are given that the sample has a k-value of 0.1472. We can use this value to calculate the half-life.

t = (0.693 / 0.1472) ≈ 4.7 days

Therefore, the substance's half-life, rounded to the nearest tenth, is approximately 4.7 days.

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True. In game theory and decision theory, the Hurwicz criterion is a decision-making rule between the minimax and maximin criteria.

The Hurwicz criterion is a hybrid of the minimax and maximin criterion. The minimax criterion is concerned with minimising the most potential loss, whereas the maximin criterion is concerned with maximising the least possible gain. The Hurwicz criterion is expressed as a weighted average of the greatest and worst outcomes:

Decision value = α(best payoff) + (1-α)(worst payoff)

where alpha is coefficient representing the decision-maker's optimism or pessimism. The Hurwicz criterion provides a more versatile decision-making tool than the minimax or maximin criteria alone, allowing for a balance between risk-taking and risk-aversion.

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The correct answer is option c. Stratified Sampling is a type of sampling method used when the population is divided into homogeneous subgroups or strata.

With this sampling method, the population is segmented into a number of smaller groups depending on traits like gender, age, or location.

The financial advisor has to know the typical tenure of instructors at their college for the specified study.

As a result, strata can be created within the population according to how long the instructors have been teaching, and samples can be drawn from each of the strata.

In this manner, it will be possible to calculate the sample data's correct estimation of the average tenure of the college's instructors.

Complete Question:

Identify the sampling technique used for the following study

For budget purposes, a financial advisor needs to know the average length of tenure of instructors at their college.

a. Census Simple

b. Random Sampling

c. Stratified Sampling

d. Cluster Sampling

e. Systematic Sampling

f. Convenience Sampling

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She has 38 nickels

N as the number of nickels, D as the number of dimes, and Q as the number of quarters.

She has 140 coins in total, so we can writen:

N + D + Q  = 140.

And the total value is $19.00

Then we have:

N*0.05 + D*0.10 + Q*0.25 = 19

And "The difference in the number of dimes and the number of quarters is 10."

D - Q = 10.

So we have a system of 3 equations and 3 variables:

N + D + Q  = 140

N*0.05 + D*0.10 + Q*0.25 = 19

D - Q = 10.

First, let's isolate one of the variables in the third equation, i will isolate D.

D = 10 + Q.

Now we can replace this in the other two equations:

N + (10 + Q) + Q = 140

N*0.05 + (10 + Q)*0.10 + Q*0.25 = 19.

Now we can isolate Q in the first equation:

N + 10 + 2*Q = 140

2*Q = 140 - 10 - N

Q = 130/2 - N/2. = 65 - N/2

Now we can replace this in the other equation:

N*0.05 + 10*0.10 + Q*(0.10 + 0.25) = 19

N*0.05 + 10*0.10 + (65 - N/2)*( 0.35) = 19

Now we can find the number of nickels.

N*0.05 + 1 + 22.75 - N*0.175 = 19

23.75 - N*(0.175 - 0.05)  = 19

23.75 - 19 = N*0.125

4.75/0.125 = N

38 = N

She has 38 nickels

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the given Laplace transform is,L^−1 { (2/s − 1/s^3) }^2= 2u(t) * 2u(t) − t^2/2= 4u(t) - t^2/2Hence, the answer is 4u(t) - t^2/2.

Given Laplace Transform is,L^−1 { (2/s − 1/s^3) }^2

The inverse Laplace transform of the above expression is given by the formula:

L^-1 [F(s-a)/ (s-a)] = e^(at) L^-1[F(s)]

Now let's solve the given expression

,L^−1 { (2/s − 1/s^3) }^2= L^−1 { 2/s − 1/s^3 } x L^−1 { 2/s − 1/s^3 }

On finding the inverse Laplace transform for the two terms using the Laplace transform table, we get, L^-1(2/s) = 2L^-1(1/s) = 2u(t)L^-1(1/s^3) = t^2/2

Therefore the given Laplace transform is,L^−1 { (2/s − 1/s^3) }^2= 2u(t) * 2u(t) − t^2/2= 4u(t) - t^2/2Hence, the answer is 4u(t) - t^2/2.

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The equation of the circle into the standard form will be (x + 7)² + (y + 15)² = 1.

It is the close curve of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.

Let r be the radius of the circle and the location of the center of the circle be (h, k). Then the equation of the circle is given as,

(x - h)² + (y - k)² = r²

The area of the circle is 9π. Then the radius of the circle is given as,

A = π

πr² = π

r² = 1

The center of the circle is at (-7, -15). Then the equation of the circle is given as,

(x + 7)² + (y + 15)² = 1

The equation of the circle into the standard form will be (x + 7)² + (y + 15)² = 1.

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Answer:

hi help me I'm new here with my latest question

Answer:

A=12

Step-by-step explanation:

Subtract -4a on both sides

you should get 26=50+2a

subtract 50 to both sides

you should get -24=2a

divide -24 by 2

The cost incurred by Rachael's restaurant as fixed, variable or mixed are given below.

What is restaurant?

A restaurant is a location where you can consume food while paying for it. In restaurants, a waiter or waitress will typically bring your food to your table. Breakfast, lunch, and dinner are all offered at the restaurant. The restaurant's food was delectable, and the waitstaff was courteous.

Given:

Rachael’s Restaurant, a fast-food restaurant company, operates a chain of restaurants across the nation.

Each restaurant employs eight people; one is a manager paid a salary plus a bonus equal to 4 percent of sales.

Other employees, two cooks, one dishwasher, and four servers, are paid salaries. Each manager is budgeted $3,000 per month for advertising costs.

The cost incurred by Rachael's restaurant as fixed, variable or mixed are,

a. Advertisement c cost relative to number of customers      Fixed

b. Rental cost relative to number of restaurant                    Variable

c. Cooks salaries relative to number of customer             Fixed

d. Cost of Supplies (cups, plates, spoons, etc.) relative

to number of customer                                                     Variable

e. Manager's compensation relative to number of customer Mixed

f. Servers' salaries relative to number of Restaurants        Variable

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Complete question:

Complete question is attached below.

An operating characteristic curve is based on a(n) binomial distribution probability.

According to the statement

we have given that the an operating characteristic curve and we have to tell the name of the probability based on the this curve is called.

So, For this purpose, we know that the

The binomial distribution is a probability distribution that summarizes the likelihood that a value will take one of two independent values under a given set of parameters or assumptions.

And in this type of probability, it is given by a characteristics curve and The binomial distribution model allows us to compute the probability of observing a specified number of "successes" when the process is repeated

So, this is called the binomial distribution probability.

So, An operating characteristic curve is based on a(n) binomial distribution probability.

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If f(x) = 10 - 4x...

f(18) = 10 - 4(18) = 10 - 72 = -62 ≠ -2

This rules out answer a, since (18,-62) would be a point, not (18,-2).

f(-18) = 10 - 4(-18) = 10 + 72 = 82 ≠ -2

This rules out answer b, since (-18,82) would be a point, not (-18,2).

f(-2) = 10 - 4(-2) = 10 + 8 = 18

Answer c seems to be ok so far, since (-2,18) is a point in answer c.

f(2) = 10 - 4(2) = 10 - 8 = 2 ≠ =18

This rules out answer d, since (2,2) would be a point, not (2,-18).

The only answer that wasn't ruled out by check the first point in each answer is answer C.

The answer of the given question is y = 7x – 48. This is the result of the equation of the line through (6,−6) (6,−6) left parenthesis, 6, comma, minus, 6, right parenthesis and (8,8) (8,8) left parenthesis, 8, comma, 8, right parenthesis. This result is generated by using point-slope formula.

What is slope formula?

Slope formula is required to calculate the inclination of a line. For calculating the slope of a line, x and y coordinates of the points on the line are required. Ratio of change in y coordinates and change in x coordinates is called the slope of a line.

Slope (m) = change in y / change in x = Δy / Δx

Thus, in this case, the calculation as follows:

m = Δy / Δx

= 8 – (–6) / 8 – 6

= 14 / 2

= 7

Now, use the point-slope formula:

y – y1 = m (x – x1)

y – 8 = 7 (x – 8)

y = 7x – 56 + 8

y = 7x – 48

Hence, the result is y = 7x – 48.

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Answer:

y = 13/4x-21

Step-by-step explanation:

Khan Academy

The equation is 4(n - 7) = 88 and the value of n is 29.

An equation basically means a mathematical statement including variables and operator that shows that two expressions are equal. Any equation can be solved using PEMDAS rule. where P stands for Parenthesis, E stands for Exponents, D stand for Divide, M for Multiplication, A for Addition and S for Subtraction.

If the number n is decreased by 7, that means n - 7.

Then the result is multiplied by 4, so 4(n - 7).

The product is equal to 88, so the equation is,

4(n - 7) = 88

Now, solving the equation

4(n - 7) = 88

4n - 28 = 88

4n = 116

n = 29

Therefore, the equation is 4(n - 7) = 88 and the value of n is 29.

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A sequence of transformation that would move ΔABC onto ΔDEF is: D. a dilation by a scale factor of 1/2, centered at the origin, followed by a 90° clockwise rotation about the origin.

In Geometry, a dilation is a type of transformation which typically changes the size of a geometric object, but not its shape.

In this scenario an exercise, we would dilate the coordinates of the pre-image by applying a scale factor of 1/2 that is centered at the origin as follows:

Ordered pair B (-4, 2) → Ordered pair B' (-4 × 1/2, 2 × 1/2) = Ordered pair B' (-2, 1).

In Mathematics and Geometry, a rotation can be defined as a type of transformation which moves every point of the object through a number of degrees around a given point, which can either be clockwise or counterclockwise (anticlockwise) direction;

(x, y)                               →            (y, -x)

Ordered pair B' (-2, 1)   →          E (1, 2)

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Answer:

c.) 30 degrees

Step-by-step explanation:

the sum of the angles of a triangle is 180 degrees

so if the third angle was x

then

x=180-(20+130)

x=180-150

x=30 degrees

The measure of third angle is 30 degree.

The total of a triangle's three internal angles is 180 degrees, as stated by the angle sum feature of a triangle. A closed shape with both inner and exterior angles, a triangle is created by three line segments.

Given:

Two angles are 20 and 130.

Using Angle sum property of triangle

<1 + <2 + <3 = 180

20+ 130 + <3= 180

150 + <3 = 180

<3 = 180- 150

<3 = 30

Hence, the third angle is 30 degree.

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Answer:

y= -12x + 5000

Answer:

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Step-by-step explanation:

Answer:

\(-3\leq x\leq -1\)

Step-by-step explanation:

the brackets denote that the values listed are included in the interval

x is greater than or equal to -3, and less than or equal to -1

Answer:

A

Step-by-step explanation:

Variables mean multiplying and that stonleigh when that multiplies and adds And it will never be even number because it is at 99 sense meaning $50 is greater than Whatever you multiply $3.99 by

Sonia will spend $1600 on airfare , $ 1200 on accommodations and $ 800 on food .

Multiplication is the polar opposite of division. If three groups of four add up to 12, then division of 12 into three groups of equal size yields four in each group.The basic objective of splitting is to count the number of equal groups that are created or the number of individuals in each group after a fair distribution.

Given that: She has allocated $3600 (in canadian dollars) to spend on airfare, accommodations, and food in a ratio of 4:3:2.

She has allocated $3600 (in canadian dollars) to spend on airfare, accommodations, and food in a ratio of 4:3:2.

let the sonia spend x

4x + 3x +2x = $3600

9x = $3600

x=$400

On airfare sonia will spend 4 × $400 = $1600

On accommodations sonia will spend 3 × $400 =$1200

On food sonia will spend 2 × $400 = $800

Sonia will spend $1600 on airfare , $ 1200 on accommodations and $ 800 on food .

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===================================================

Explanation:

She starts off with $350 in savings. Then she adds on another $30 per week. After w of those weeks, she adds a total of 30w dollars. The w is just a placeholder for a number. For example, if w = 5, then 30*w = 30*5 = 150 dollars is added on top of the $350 already there.

Overall, the expression 30w+350 represents how much is in her savings after w weeks. Therefore, the equation Martina wants would be

s = 30w+350

----------------------

For the second part, we'll plug w = 17 into that equation to find s

s = 30w+350

s = 30*17+350

s = 510+350

s = 860

Martina has $860 in her account after 17 weeks.

Step-by-step explanation:

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