Answer:
(x-7)(x+7)
Step-by-step explanation:
x^2 -49
This is the difference of squares
x^2 -7^2
We know that a^2 -b^2 = (a-b)(a+b)
(x-7)(x+7)
Answer: x=7
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−(12+4x)=−40
−4x+−12=−40(Distribute)
−4x−12=−40
Step 2: Add 12 to both sides.
−4x−12+12=−40+12
−4x=−28
Step 3: Divide both sides by -4.
−4x
−4
=
−28
−4
Answer:
D
Step-by-step explanation:
First, we get the mean and median of the first data set WITH 5 years : mean = 15 median = 14, then remove the 5 years mean = 15.222 median = 14
Answer:
undefined
It is undefined because if you put it on a graph you get a line going straight down.
Answer:
20+3c
Step-by-step explanation:
c is the cost of each Cd
