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3 years ago

8

Solve the equation thanks

1 answer:

Irina-Kira [14]3 years ago

3 0

Answer:

1 and 3

Step-by-step explanation:

1 is a function because it is a horizontal line

2. is NOT a function because there 2 output

3. Is a function because no muti out puts

Hoped this help you!!

<3

Red

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What is the equation of the line that is parallel to the line defined by the equation y = 3x + 6 and goes through the point (3,

saw5 [17]

Answer:

Step-by-step explanation:

Parallel lines have the same slope. The slope of the given line is 3. The easy way to do this, the one that uses our logical brains as opposed to our mathematical brain, tells us that since there is only one choice that has a given slope of 3, that is the one that we want. The second choice down is the only one that has a slope of 3.

Mathematically,

$y-2=3(x-3)$ and

$y-2=3x=9$ and

$y=3x-9+2$ so

y = 3x - 7 (the second choice)

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3 years ago

The prism below is made of cubes which measure of a centimeter on one side. What is the volume Note: Figure is not drawn to scal

max2010maxim [7]

Answer:

d

Step-by-step explanation:

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3 years ago

3/4 divided by 15/28 whats my answer

dalvyx [7]

(3/4) / (15/28) = (3*28) / (4*15) = 84/60 = 42/30 = 21/15 = 7/5

7 0

3 years ago

Read 2 more answers

One step equations, solve:<br> -6=y+2

Pavel [41]

Well I don’t know if you want to know how to solve it but y = -8

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3 years ago

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In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following

Iteru [2.4K]

Answer:

Option d - 2.7

Step-by-step explanation:

To find : The test statistic has a value ?

Solution :

Using test statistic formula,

$Z_0=\frac{\bar{y_1}-\bar{y_2}}{\sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}}$

Where,

$\bar{y_1}=10.8$ is the sample mean of company A

$\bar{y_2}=10$ is the sample mean of company B

$\sigma_1=2$ is the standard deviation of company A

$\sigma_2=1.50$ is the standard deviation of company B

n= 80 is the sample size of company A

n= 60 is the sample size of company B

Substitute all the values in the formula,

$Z_0=\frac{10.8-10}{\sqrt{\frac{2^2}{80}+\frac{1.50^2}{60}}}$

$Z_0=\frac{0.8}{\sqrt{\frac{4}{80}+\frac{2.25}{60}}}$

$Z_0=\frac{0.8}{\sqrt{0.05+0.0375}}$

$Z_0=\frac{0.8}{\sqrt{0.0875}}$

$Z_0=\frac{0.8}{0.2958}$

$Z_0=2.70$

Therefore, The test statistic has a value of 2.7.

So, Option d is correct.

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3 years ago