Charge per hour: $25
Number of hours: h
Total charge: $75
So, to find the number of hours spent on the job, we have to multiply the charge per hour (25) by the number of hours (h); and that expression must be equal to the total charge (75).
Mathematically speaking:
25h=75
Take the amount of angles and divide 360 by said amount and your answer is there.
Answer: 1, -1
Step-by-step explanation: This is a difference of squares when factored,
(x+1)(x-1)
Let's check using FOIL(First, outside, inside, last)
x * x =x^2
1 *x =x
x * (-1) =-x
1* -1 =-1
so x^2 +x -x -1
=x^2 -1
Answer:
c
Step-by-step explanation: