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3 years ago

Angle of elevation and angle of depression are equal to each because they are considered _____ angles (two words).

Mathematics

1 answer:

Olenka [21]3 years ago

4 0

Alternative angles.

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If3x-2=2 then what does 4x-2=

Nataly_w [17]

3x=2+2

3x=4

x=<u>4</u>

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3 years ago

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calculate the surface of each 3D shape below then from the right, drag and drop the correct surface area calculation into the bo

Vikentia [17]

Answer:

thy

Step-by-step explanation:

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3 years ago

Insert 5 arithmetic means between -1 and 11

Anni [7]

Answer:

Step-by-step explanation:

-1 1 3 5 7 9 11

That's the answer. If you need a method or a formula, that's a little harder.

L = a + (n - 1)*d

a = -1

L = 11

n = 7

or n is the hard part. If you have 5 means, then you have 6 spaces. So n must be 7 in all

11 = -1 + (7 - 1)*d add 1 to both sides. Combine the brackets

11+1 = -1+1+ 6*d

12 = 6d divide by 6

12/6 = d

2 = d

What this tells you is that each term has 2 added to it to get to the next one.

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3 years ago

What is the equation of the line that passes through the point (-6,-7) and has a slope of 0?

lora16 [44]

Y=-7
When a slope is zero the line will be vertical so basically all you need to do is get the Y of your points and use that in your sub intercept equation

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3 years ago

In developing a new gasoline additive, researchers randomly select 10 cars and drive them both with and without the additive. Th

soldi70 [24.7K]

Answer:

The test statistic is t = 3.24.

Step-by-step explanation:

We want to test the hypothesis that the fuel additive has mean mpg less than the mean mpg without the additive.

This means that the null hypothesis is that the difference is less than 0, while the alternate hypothesis is that the difference is 0 or more.

The test statistic is:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $s$ is the standard deviation of the sample and n is the size of the sample.