Answer:
80
Step-by-step explanation:
mean = 140+20=160
160/2
= 80
Answer:
B. x² - 13x + 42
Step-by-step explanation:
The Answer: (-b + 15) (15 - b)
Answer:
72 square feet not covered
Step-by-step explanation:
100%-40% = 60%
60% of 120 = 0.6x120 = 72
A rational number can be made into a fraction
0.21 = 21/100....so it is rational