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2 years ago

Four students are competing in a race. In how many different combinations could the four students place in the race?

1 answer:

4 0

"Combinations" isn't really the right word, because a combination doesn't take order of elements into account, and the outcome of a race certainly does depend on order. "Permutations" would be the correct term.

If 4 students are competing, then the race has

4! = 4 • 3 • 2 • 1 = 24

possible outcomes.

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A television is measured by its diagonal. If the height of a 70 inch television is 42 inches, what is the width?

GenaCL600 [577]

Use the Pythagorean theorem:

70^2 = 42^2 + width^2

4900 = 1764 + width ^2

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3136 = width^2

Take the square root of both sides

Width = 56 inches

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2 years ago

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3 years ago

How?!? I don't know what to do

Goshia [24]

This is easy, if adding the first number to the second number you get 70.2 then if you want to find the middle number you will have to subtract 32.34 from 70.2 to get 37.86, now add that and 32.34 to check if it gives you 70.2.... When you add them you indeed get 70.2 so your work is correct meaning your middle number is 37.86

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3 years ago

A vase in the shape of an oblique cylinder has the dimensions shown. What is the volume of the vase?

fenix001 [56]

The image is missing so i have attached it.

Answer:

Volume = 1.5 litres

Step-by-step explanation:

Using pythagoras theorem, we can get the height (h) of the cylinder

14² + h² = 17²

h² = 289 - 196

h = √93

Now, volume of a cylinder is;

V = πr²h

In the image, r = diameter/2 = 14/2 = 7cm

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V = π × 7² × √93

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3 years ago

Read 2 more answers

Original price $65.00; Markdown: 12%

MAVERICK [17]

65 x .12 = 7.865 - 7.8 = 57.2

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3 years ago