1) A train travels 25 miles in 1/5 of an hour whats the trains speed in miles per hour?
2) The height of a stack of books, h inches, is directly proportional to the number of books, n. The height of a stack of 10 books is 12 inches. A-find the constant of proportionality. B-write and equation relating to h and n. C-find the height of a stack of 24 books.
3) An 8-ounce serving of milk provides 30% of the daily value of calcium. How much milk would you have to drink to get 100% of your daily value of calcium
PLEASE HELP I NEED THESE ANSWERS FASTT

Answer:

Hope this helps! ↓

Step-by-step explanation:

1.) 90 Km/h. Example: What is the speed of a cheetah that travels 112.0 meters in 4.0 seconds? ... Speed of the cheetah in miles per hour 28m 1 mile 3600 s 63 miles

2.) y=kx is the direct variation formula. Inserting the information and variables from this scenario we get h = kn.

12 = k*(10) First solve for 'k', the constant of proportionality by dividing by 10.

1.2 = k

Next write the equation using this k and the h & n.

h = 1.2*n

Now we want to find the height if we have 24 books so plug 24 in for n.

h = 1.2 * 24

h = 28.8 inches

3.) 10/3

-2*8/3 lol i hate math

what are two simple, matching equations (mathematical)

Please help this is worth 15 points! Solve in y=mx+b from!

Pls help due today plsss

PLEASE HELP ME WITH MY MATH ;-; if you help I will give you 5 stars, a thanks, and a brainliest and THIS IS THE LAST ONE

Can some one please help and explain this to me

Does anyone know this?

Simplify the expression:
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Part A: Determine the average rate of change of h(t) between t = 2 and t = 5.
Part B:Explain what this average rate of change means in terms of the context.

Lmk pls
Will pick the correct answer brainliest!!

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a. 1/4(n−4)

b. 4(n - 4)

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d. 4(n - 64)

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50


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D. 4 hours
E. 4 hours

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5k2+3k2–4k2+k2

I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would appreciate it!

Express 18√8 in the form a√b where a and b are integers and b is as small as possible.


Hint(s): Factor sqrt(8) as the product of two square roots, one of which is the square root of a perfect square.


PLEASE HELP!!!

helppp! show your work

Simplify the expression:
7f+9+7–3f

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C: 19 inches
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I Need Help With No. 5

A student uses the figure below to find the measure of Angle S. The student first finds the measure of angle P. Why does finding the measure of angle P help the student find the measure of angle S?

answer choices

Angle P and Angle S are ADJACENT angles and ADD UP TO 180 degrees.

Angle P and Angle S are VERTICAL angles and ADD UP TO 90 degrees.

Angle P and Angle S are ADJACENT angles and are EQUAL.

Angle P and Angle S are VERTICAL angles and they are EQUAL

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Show all your work!!!

B is already wrong (TRUST ME)

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You can write out the fraction names or use the forward slash (/) on your keyboard to represent the fraction bars.