Length of the side =√((3--1)²+(-1-2)²)=√(16+9)=√25=5
one side =5
P=8*side=8*5=40
Answer:
3 dollars and 60 cents
Step-by-step explanation:
Answer:
1/4 x 4 = 1 1/20 x 4 = 4/20 or 1/5 which means he can run 5 mile an hour
F(x) = (x + 1)(x - 2)
f(x) = x(x - 2) + 1(x - 2)
f(x) = x(x) - x(2) + 1(x) - 1(2)
f(x) = x² - 2x + x - 2
f(x) = x² - x - 2