Answer:
600 mph
Step-by-step explanation:
Given that,
Distance covered by ball, d = 5 miles
Time taken, t = 30 seconds
1 second = (1/3600) hour
Speed = distance/time

So, the speed of the ball is 600 mph.
Answer:
x² - 20 = 0
Using the quadratic formula

a = 1 b = 0 c = -20
So we have

Hope this helps you.
Answer:
135
Step-by-step explanation: 9x15=135
54:84___(÷2)
27:42___(÷3)
9:14