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4 years ago

A rectangle had sides of length 9 feet and 12 feet. Find the measure of the diagonal. Round to the nearest tenth if necessary

Mathematics

1 answer:

lara [203]4 years ago

7 0

Answer:

Step-by-step explanation:

${9}^{2} + {12}^{2} = {c}^{2} \\ 81 + 144 = {c}^{2} \\ 225 = {c}^{2} \\ \sqrt{225 } = 15$

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3 years ago

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Randy saves money using an account which earns interest over the course of several years. Which statement is true?

nordsb [41]

Answer:

Step-by-step explanation:

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3 years ago

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When Amy roller-skates, she moves 110 yards per minute. What is her speed in miles per hour? Round your answer to the nearest hu

Softa [21]

Answer:

Speed of Amy is 3.75 miles per hour.

Step-by-step explanation:

We have, speed of Amy = 110 yards per minute

This means, she covers 110 yards of distance in 1 minute.

Now, to convert the speed of Amy into miles per hour, we will first convert the distance from yards into miles and then convert time from minutes to hour.

We know that,

1 yard = 3 feet

∴ 110 yards = 3 × 110 feet = 330 feet

Now, we also know that,

5280 feet = 1 mile

∴ 1 feet = $\frac{1}{5280}$ miles

So, 330 feet = $\frac{1}{5280}\times330$ = $\frac{1}{16}$ miles

∴ 110 yards = 330 feet = $\frac{1}{16}$ miles

Now, 60 min = 1 hr

∴ 1 min = $\frac{1}{60}$ hrs

So, 110 yards = $\frac{1}{16}$ miles and 1 min = $\frac{1}{60}$ hr

So, we can say that, Amy covers a distance of $\frac{1}{16}$ miles in

$\frac{1}{60}$ hr.

We know that,

$speed=\frac{distance}{time}$

$speed=\frac{(\frac{1}{16}) miles}{(\frac{1}{60})hr}$

$speed=\frac{60}{16} miles/hr = 3.75 miles/hr$

Therefore, the speed of Amy in miles/hr is 3.75 miles/hr.

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4 years ago

Help!

Bezzdna [24]

Answer:

The answer is c = 2 + 3d .

Step-by-step explanation:

It is given that a cab ride cost $2 which is a fixed amount and charges additional $3 per mile. So you have to make an equation of c in terms of d :

Let c be the cost,

Let d be the distance,

c = 2 + 3d

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3 years ago