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4 years ago

How do you solve this? I am having a real hard time on where I need to start, please help.

Mathematics

1 answer:

galben [10]4 years ago

7 0

Answer:

c^7/9

Step-by-step explanation:

basically when ever you need to turn a root into an exponent create a fraction where the root number (number on the left in the little dip) is the denominator and the exponent already on the number is the numerator.

so since 9 is on the root, and 7 is the exponent already there, our rational exponent is 7/9.

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What is 40% of a circle of radius 225ft

castortr0y [4]

Area of circle=(pi)r^2
=(pi)(225ft)(225ft)
=159,043.1281
then find 40% of surface area: 159043.1281 x 40%=63,617.25124

Hope that is helpful!

3 0

4 years ago

If a family of four pays $56.25 at a restaurant, how much would a family of six pay

grin007 [14]

Answer:

$84.38

Step-by-step explanation:

Assuming each member costs the same price, multiply by the fraction (6/4).

In other words, divide the total by 4 to get 1 person. Multipluy by 6 to see how much 6 people would cost.

56.25 x 6 = 337.5

337.5/4 = 84.375

6 0

4 years ago

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Angles R and Z are complementary. If m ∠R = 26˚, what is the measure of angle Z?

zysi [14]

Answer:

Step-by-step explanation:

(note:Two angles are called complementary when their measures add to 90 degrees.)

90-26=64

5 0

3 years ago

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A circular region has a population of about 15,500 people and a population density of about 775 people per square kilometer. Fin

Reil [10]

Answer:

2.5 km

Step-by-step explanation:

First, find the area of the region:

A circular region has a population of about 15,500 people;
A population density of about 775 people per square kilometer.

So, there are $15,500 :775=20$ square kilometers.

Now, let x kilometers be the radius of the circular region, then

$A_{\text{circilar region}}=\pi r^2\\ \\20=\pi r^2\\ \\r^2=\dfrac{20}{\pi}\approx 6.366198\\ \\r=\sqrt{3.366198}\approx 2.523$

To the nearest tenth this is 2.5 km.

6 0

3 years ago

Solve y = 12x + n for n need help please

alexgriva [62]

For this, just subtract both sides by 12x and <u>your answer will be $y-12x=n$ </u>

8 0

3 years ago

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