I will give the brainiest The population of a town is 12,000, and it grows at a rate of 5% per year. What will the
population be in 4 years?

What was the population 4 years ago?

about 56,401; about 6,290
about 14,586; about 9,872
about 12,600:about 11,400
about 14.420; about 10.104

After 4 years the population of the town will be 14,586.1

Step-by-step explanation:

12,000 x 5%= 600 > 600 + 12,000 = 12,600 1 years = 12,600

12,000 x .05 = 600 ^

12,600 x 5% = 630 > 630 + 12,600 = 13,230 2 years = 13,230

12,600 x .05 = 630 ^

13,230 x 5% = 661.5 > 661.5 + 13,230 = 13,891.5 3 years = 13,891.5

13,230 x .05 = 661.5 ^

13,891.5 x 5% = 694.6 > 694.6 + 13,891.5 = 14,586.1 4 years = 14,586.1

13,891.5 x .05 = 694.6 ^

About 56,401; about 6,290

Step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240