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Bumek [7]
3 years ago
15

PLEASE HURRY BRAINLIEST FOR CORRECT ANSWER In 2018, there is an average of 45.6 people per 3 square kilometers in the United Sta

tes. How many people live in 1 square kilometer?
Mathematics
2 answers:
mamaluj [8]3 years ago
8 0

Hi!

We will solve this using ratios, like this:

45,6 people per 3 square kilometers

x people per 1 square kilometer

_________________________________

x = (45,6*1)/3

x = 45,6/3

x = 15,2

Hope this helps!

Mariulka [41]3 years ago
4 0

Answer:

15.2

Step-by-step explanation:

3/45.6 = 1/x        *Cross multiply.

3x = 45.6         *Divide both sides by 3.

x = 15.2

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The area of a circle is 36/pi cm^2 What is the radius of the circle?
Lady bird [3.3K]

Answer:

the  radius of the circle is 6cm

Step-by-step explanation:

the area of a circle is given to be  = 36πcm²

radius of the circle = ?

to find the radius of the circle lets start by applying  the formula for finding the area of a circle.

area of a circle = πr²

36πcm² = πr²

36π = πr²

divide both sides by π

36π/π = πr²/π

36 = r²

to get the value of r we are going to look for a way of getting rid of the square on "r" by squaring 36

r² = 36

r =√36

r = 6cm

therefore the  radius of the circle is 6cm

5 0
3 years ago
How would you write 6 × 6 × 6 × 6 as an exponential expression?
stepan [7]
The answer is 6⁴.

Exponent is the number of times the factor is being multiplied. For example:
x * x = x²
x * x * x = x³
x * x * x * x = x⁴
....
So: 
6 * 6 * 6 *6 = 6⁴
8 0
3 years ago
Given h (x) = -2x - 4, solve for x when h (x) =6.
anygoal [31]

Answer:

(x = -20) if what your saying is 6 = -2x - 4 and (x = -16) if what your saying is x = -2 x 6 - 4

Step-by-step explanation:

6 0
3 years ago
???? thank you so much
Y_Kistochka [10]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
Guys please help me !! ASAP !
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1. vertical
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