Answer:
250
Step-by-step explanation:
You do 20/.08 to get 250.
Answer:
w = 6
Step-by-step explanation:
11w - 9 - 7w = 15
4w = 15 + 9
w = 24/4
w = 6
Answer:
x² - 1 = 8
Step-by-step explanation:
Given the following algebraic expression;
x² - 1
When x = -3
Substituting the value of x, we have;
x² - 1 = (-3)² - 1
x² - 1 = 9 - 1
x² - 1 = 8
Method II.
x² - 1 = (x - 1)(x + 1)
Substituting the value of x, we have;
x² - 1 = (-3 - 1)(-3+ 1)
x² - 1 = -4(-2)
x² - 1 = 8