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Veronika [31]
3 years ago
5

Can someone pls help out

Mathematics
1 answer:
weqwewe [10]3 years ago
6 0

Answer:

A. 99.87%

Step-by-step explanation:

i don't explain things good

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A circular region has a population of about 260000 people and a population density of about 135 people per square mine . find th
ValentinkaMS [17]

Answer:

24.76 mine

Step-by-step explanation:

The first thing is to calculate the area of the region, which we can calculate since we have the density and the population. The area would be the quotient between population and density:

260000/135 = 1925.93

The area would be 1925.93 square mine

We know that the area is given by:

A = pi * r ^ 2

we solve to r

r ^ 2 = A / pi

r ^ 2 = 1925.92 / 3.14

r ^ 2 = 613.3

r = 24.76

the radius is equal to 24.76 mine

4 0
3 years ago
Read 2 more answers
Hurry will give brainliest!!
Ipatiy [6.2K]

Answer:

B and D

Step-by-step explanation:

6 0
3 years ago
A student purchases school supplies at a store where the sale tax is 7%. The pre-tax price of the supplies is $48. What is the t
Elina [12.6K]

$48×1.07= Total cost is $51.36

5 0
2 years ago
Which equation describes the line that passes through the points (1, 3) and (– 2, 6)?
iVinArrow [24]
The first one. if you use one of the points to substitute the variables, you’ll see that the equation is true
8 0
3 years ago
Solve for x. Write both solutions, separated by a<br> comma.<br> 7x2 - 4x - 3=0
aleksandr82 [10.1K]

Answer:

<h2>x = - 3/7 or x = 1</h2>

Step-by-step explanation:

7x² - 4x - 3 = 0

Rewrite - 4x as a difference

That's

7x² - 7x + 3x - 3 = 0

Factorize the expression

7x( x - 1) + 3 ( x - 1) = 0

(7x + 3)( x - 1 ) = 0

7x + 3 = 0 x - 1 = 0

7x = - 3 x = 1

x = -3/7

The solutions are

x = - 3/7 or x = 1

Hope this helps you

4 0
3 years ago
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