May is helping a friend, who has a tree farm,
sell Christmas trees. She began with two
hundred twenty trees to sell. After two days,
two hundred trees are left. Assume that the
trees sell at the same rate per day until they are
gone.
Define a unit for the time spent selling
trees. Enter a variable for the time spent
selling trees and use this variable to write
an expression for the number of trees left to
sell.
1. How many trees will be left to sell after ten
days?
F VxVx

step-by-step explanation:

b and c

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

(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