Answer: 70x^2 -50x
Step-by-step explanation:
^ means exponent
Answer:
80 or 81 minutes
Step-by-step explanation:
12.28-5 =7.28 7.28/.09= 80.88
Answer:
13.5
Step-by-step explanation:
c = 2πr
42.3 = 2(3.14)r
42.3 = 6.28r
6.74 = r
d = r + r
d = 6.74 + 6.74
d = 13.5