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3 years ago

I REALLY REALLY REALLY NEED HELP PLEASEEE BRAINLIEST+THANKS**********

Mathematics

1 answer:

Mariulka [41]3 years ago

7 0

Answer:

The correct answer option is D. 0.42.

Step-by-step explanation:

We are given the results of a survey in which people were asked if they prefer reading books or e-books.

We are to find the marginal frequency of the number of people who prefer to read books.

For that, we will divide the total number of people who prefer reading books by the total number of people surveyed.

Marginal frequency = 105/250 = 0.42

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Answer:

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Step-by-step explanation:

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2 years ago

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3 years ago

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Tcecarenko [31]

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3 years ago

Eli is driving at a speed of 60 miles per hour. Let h represent the number of hours that Eli drives at this speed. Enter an alge

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<h3>Answer: 60h</h3>

Work Shown:

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3 years ago

Help please. I’m stuck on this one

Nastasia [14]

Answer:

b = 25m

Step-by-step explanation:

Hi there!

We're given angle B and the length of a in this right triangle. We must solve for the length of b. a and b are the two legs of the right triangle.

In this case, we can use the tangent ratio:

$tan\theta=\displaystyle\frac{opposite}{adjacent}$

Plug in the given information:

$tan\displaystyle\frac{\pi}{4} =\displaystyle\frac{b}{25}\\\\25tan\displaystyle\frac{\pi}{4} =b\\\\b=25$

Therefore, b = 25m.

We can also use this using special triangle rules. $\displaystyle\frac{\pi}{4}$ radians is equal to 45 degrees, making this a 45-90-45 triangle. This would make a and b equal in length.

I hope this helps!

5 0

2 years ago