Answer:
-27,-32,-37,-42,-47
Step-by-step explanation:
mean = sum/n
mean = (5 + 7 + 7 + 9 + 12 + 16 + 21)/7
mean = 77/7
mean = 11
Answer:
10x5 1/2= 55 x 4= 220 so the answer is 220in3
Step-by-step explanation:
(5x+15)(6x-10)
= 30x^2 + 30x - 50x - 150
= 30x^2 - 20x - 150