Determine which equation represents a function.
A. y = -2x + 1
B. x=4
C. x=y²-1
D. y²-x​

Answer:

sorry im on a time lapse, so the answer is 2  1/2. hope it helps

Step-by-step explanation:

Answer:

Hi above picture is the solution for your question.

Please mark it the brainliest answer

The number of ways can the selection be made is 84.

Given:

an executive hires 3 office workers from 8 applicants.

a ) .

Number of ways = C ( 8 , 3 )

C ( n , r ) = n! / ( n - r ) ! r!

C ( 8 , 3 ) = 8! / ( 8 - 3 ) ! 3!

= 8! / 5! * 3 !

= 8 * 7 * 6 * 5! / 5! * 3!

= 56 * 6 / 3!

= 56 * 6 / 3 * 2 * 1

= 56 * 3 / 2 * 1

= 28 * 3 / 1

= 28 * 3

= 84 ways

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Answer:

124.4

Step-by-step explanation:

Perimeter of ∆HIJ = IJ + HJ + HI

IJ = 40

HJ = 37.6

HI = ?

Let's find HI

∆HIJ and ∆EFG are similar. Since they have equal corresponding angles. Therefore, the ratio of their corresponding sides would be equal.

Thus:

EF/HI = FG/IJ

EF = 117 (given)

HI = ?

FG = 100 (given)

IJ = 40 (given)

Plug in the values

117/HI = 100/40

117/HI = 2.5

117 = HI*2.5

117/2.5 = HI

HI = 46.8

✔️Perimeter of ∆HIJ = IJ + HJ + HI

= 40 + 37.6 + 46.8

= 124.4

Answer:

3/12

Step-by-step explanation:

The given exponential function represents a decay function and as such the equation of the asymptote is; decay; y = 0

An exponential equation is defined as an equation with exponents whereby the exponents or even a part of the exponent is deemed a variable. For example, 2ˣ = 32

The standard form of exponential equation is written as; y= abˣ

Now, exponential equation can either be growth or decay depending on the rate constant value.

If the value of b < 1, it is a decay while if the value of b > 1, then it is growth.

We are given the exponential equation as;

y = 12(1/3)ˣ

We see that b = 1/3 which is less than 1, and as such it is a decay function.

The equation of the asymptote will be decay; y = 0

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Answer: decay y=0

Step-by-step explanation: it is what it is honestly

Answer: true

Step-by-step explanation:

Answer: True

Step-by-step explanation: Has to be true if a b and c are all numbers

Answer:

\( - 4x + 9 = 21 \\ - 4x = 21 - 9 \\ = 12 \\ x = \frac{12}{ - 4} \\ x = - 3\)

Answer: y=-5

Step-by-step explanation:

A horizontal line appears on the graph if it goes through the y-axis. Knowing this, the coordinate tells us that the y-coordinate is -5. This tells us that the equation of the line is y=-5.

To find the surface area of the figure, we need to consider the individual surfaces and add them together.

First, let's identify the surfaces of the figure:

The lateral surface area of the larger prism (excluding the base)

The two bases of the larger prism

The lateral surface area of the smaller prism (excluding the base)

The two bases of the smaller prism

The lateral surface area of a prism is given by the formula: perimeter of the base multiplied by the height.

The bases of the prisms are rectangles, so their areas can be calculated by multiplying the length by the width.

To find the missing prism's surface area, we need to consider that it is a smaller prism nested inside the larger prism. The lateral surface area and bases of the missing prism should also be included.

Once we have calculated the individual surface areas, we add them together to find the total surface area of the figure.

Without specific measurements or dimensions of the figure, it is not possible to provide a numerical answer. Please provide the necessary measurements or dimensions to calculate the surface area.

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Step-by-step explanation:

please mark me as brainlist please

Answer:

Hindus from India invented zero to represent the idea of the power of the cosmos and universe as they expand into infinity. They called this the sunya which means empty in Sanskrit. The book Brahma Sphuta Siddhanta was published in c. 628 by Brahmagupta which defines zero as the subtraction of a number by itself, e.g. 5-5 =0.

The values of x and y in the system of equations, x - y = 5 and 3x - 2y = 12, are: x = 2  y = -3

Given the system of equations:

x - y = 5 --> eqn. 1

3x - 2y = 12 --> eqn. 2

Rewrite equation 1:

x = 5 + y --> eqn. 3

Substitute x for 5 + y into equation 2:

3(5 + y) - 2y = 12

15 + 3y - 2y = 12

15 + y = 12

y = 12 - 15 [subtraction property]

y = -3

Substitute y = -3 into equation 3:

x = 5 + (-3)

x = 2

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Answer:

70

Step-by-step explanation:

your height is 14, Given

Your surface area for the top face is 14

the way to make 14 from two factors is 7 and 2

therefore your height is 5 your width is 7 and your depth is 2

Answer:

What is the average time it took the car to travel 0.25 meters?

What is the average time it took the car to travel 0.50 meters?

I hope is work you!!

(1) The first velocity of the car with two washers at the 0.25 meter mark is 0.125 m/s.

(2) The second velocity of the car with two washers at the 0.5 meter mark is 0.25 m/s.

Velocity is the rate of change of displacement with time. The velocity of the  cars depends on displacement and time of motion.

The first velocity is calculated as follows;

v1 = 0.25 m / t1

let t₁ = 2 s

v₁ = 0.25/2

v₁ = 0.125 m/s

v2 = 0.25 m / (t2 – t1)

let t₂ = 3 s

v₂ = 0.25(3 - 2)

v₂ = 0.25 m/s

The complete question is below:

Calculate the first and second velocities of the car with two washers attached to the pulley, using the formulas

v1 = 0.25 m / t1, and

v2 = 0.25 m / (t2 – t1)

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The upper quartile of the time spent reading, as shown in the box plot is: 300.

In a box plot, the upper quartile is represented by the data point located at the end of the edge of the rectangular box in the box plot.

In the box plot, 300 is the value located at the end of the edge of the rectangular box.

Therefore, the upper quartile of the time spent reading, as shown in the box plot is: 300.

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Answer:

(7,0) and (-3,0)

Step-by-step explanation:

Given the factors, we want to get the x-intercepts

All we have to do is to get the x values by equating the factors to zero

we have this as;

(x -7) = 0 and (x + 3) = 0

x = 7 and x = -3

The x-intercepts are;

(7,0) and (-3,0)

Answer:

108 cm²

Step-by-step explanation:

A = πr²

A = 3 * 6²

A = 3 * 36

A = 108

If my answer is incorrect, pls correct me!

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-Chetan K

To forecast using data that has seasonality, one commonly used method is seasonal decomposition of time series (STL). This method separates the time series data into three components: trend, seasonality, and residuals. By isolating the seasonal component, you can forecast future values by extrapolating the pattern observed in previous seasons.

Another approach is the use of seasonal autoregressive integrated moving average (SARIMA) models. SARIMA models are an extension of ARIMA models that incorporate seasonal patterns. These models capture both the trend and seasonality in the data and can be used to make forecasts.

To control volatility in various time series models, a common technique is to use a volatility model, such as the generalized autoregressive conditional heteroskedasticity (GARCH) model. This model estimates the volatility of the time series by incorporating past volatility and squared residuals. By modeling and forecasting the volatility, you can better understand and manage the potential fluctuations in the time series data.

A simple moving average method is a technique used to smooth out fluctuations and identify trends in time series data. It involves calculating the average of a fixed number of data points, often referred to as the window size or period. As new data becomes available, the oldest data point in the window is dropped, and the newest data point is included in the calculation. This process is repeated for each subsequent data point. The resulting moving average values can provide insights into the overall trend of the data, helping to identify patterns or changes over time.

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Answer:

the last choice

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k ) = (3, 2 ) and r = 1 , then

(x - 3)² + (y - 2)² = 1² , that is

(x - 3)² + (y - 2)² = 1 → B

Answer:

x=-12

Step-by-step explanation:

½ x+7 = x+13

Multiply both sides

x + 14 = 2x + 26

Move the terms

x - 2x = 26 - 14

Calculate

-x = 12

Change the signs

x = -12

Answer:1.6

Step-by-step explanation:

25/5=5

8/5=1.6

Answer:

Step-by-step explanation:

if 5miles = 25 minutes

then, 8 miles = X

hence X minutes

\(x = \frac{25minutes}{5miles} \times 8miles\)

If three pencils, each measuring one foot in length, are laid end to end touching, the total distance covered by the row would be 3 feet.

Since each pencil is 1 foot long, when three pencils are laid end to end, they form a row that is 3 feet long. The key information here is that the pencils are touching, which means there are no gaps between them. Therefore, the row would extend for a total distance of 3 feet.

In this scenario, the correct answer is option a, 3 ft. The row would not extend beyond 3 feet because there are only three pencils, each measuring one foot in length. If there were more pencils or if they were not touching end to end, the total distance covered by the row would be different. However, based on the given information, the row formed by the three one-foot-long pencils would have a length of 3 feet.

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The population standard deviation of the data set is 1.414.

Standard deviation is used to determine how the values in a group differs from the mean of the values in the group. It is a measure of variation.

Mean = (8 + 9 + 10 + 11 + 12) / 5 = 10

Sum of squared differences: (8 - 10)² + (9 - 10)² + (10 - 10)² + (11 - 10)² + (12 - 10)² = 10

√10/5 = 1.414

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Answer:

B

Step-by-step explanation

i got a 100 on the quiz

The required equivalent expression to the given expression is x Superscript 9 Baseline (Superscript 3 StartRoot y end root). Option 2 is correct.

It is a technique in mathematics to operate and interpret the function to make the function or expression straightforward or more understandable is called simplifying and the process is called simplification.

Here,
the given expression,
(x Superscript 27 Baseline y) Superscript one-third = [x²⁷/y]¹/³
= [[x²⁷/³]/∛y
= x⁹/∛y =  x Superscript 9 Baseline (Superscript 3 StartRoot y end root)

Thus, the required equivalent expression to the given expression is x Superscript 9 Baseline (Superscript 3 StartRoot y end root). Option 2 is correct.

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Data is sampled from a population for scores that has an original σ=5 points and the error expected from samples with the following sizes are: a. n=4, SE = 2.5  b. n=9, SE = 1.67   c. n=16, SE = 1.25.

The formula for estimating the error or the standard error of the sample is given as: SE=σ/√n. Where σ is the population standard deviation, n is the sample size and SE is the standard error.

Now, using the given formula, let's calculate the standard errors for the given sample sizes:

a. For n=4SE=σ/√n=5/√4=2.5

b. For n=9SE=σ/√n=5/√9=1.6666≈1.67

c. For n=16SE=σ/√n=5/√16=1.25

Thus, the standard errors for sample sizes of n=4, n=9, and n=16 are 2.5, 1.67, and 1.25 respectively.

The error is expected to decrease as the sample size increases.

Data is sampled from a population for scores that has an original σ=5 points and the error expected from samples with the following sizes are:

a. n=4, SE = 2.5

b. n=9, SE = 1.67

c. n=16, SE = 1.25.

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Answer:

and

Step-by-step explanation:

herefore, the area of the triangle is approximately 2.58 square yards.

Area = (1/2) * a * c * sin(B)

where B is the angle opposite to the side of length b, and a and c are the lengths of the other two sides.

In this case, we have:

B = 47 degrees (given)

a = 2 yards (given)

c = 4 yards (given)

To use the formula, we first need to find the length of the third side, b, using the Law of Cosines:

\(b^{2}\) = \(a^{2}\)+ ^\(c^{2}\) - 2accos(B)

b^2 = 2^2 + 4^2 - 224cos(47)

b^2 ≈ 13.37

b ≈ 3.657

Now we can substitute the values into the formula for the area:

Area = (1/2) * a * c * sin(B)

Area = (1/2) * 2 * 4 * sin(47)

Area ≈ 2.58 square yards

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Answer: -1/3 is the correct answer

Step-by-step explanation: