Activity 2: Planting Trees The best time to plant trees was 20 years ago
The second best time is NOW
Data from the lumber industry shows that the
older the tree (a), the greater the number of board feet
(n) that can be created from the tree. For a tree that is
160 years old, 18,200 board feet can be used
a) Write an equation in slope-intercept form to represent this situation
b) What does the independent variable represent?
c) What does the dependent variable represent?
d) How much board feet can be used from a tree that is 100 years old?
e) If 6,825 board feet was used from a tree, how old was the tree?

pleas answer thi kailangan ko na toh​

i dont know men

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

c

step-by-step explanation: