-3(8-10) subtracting is the same as adding the opposite
-3(-2) multi. Negative times a negative becomes a positive
6
Answer:
The correct answer is 7.5
Step-by-step explanation:
100x5=500
500÷4=125
125x6=750
750/100=7.5
The answer is 7.5 m
Answer: The person's speed is 8 miles per hour.
Step-by-step explanation:
To solve we want to convert the
and
proportionally for the number of miles per hour. We know that multiplying a fraction by its reciprocal will equal 1. So let's do that for the value of the hour.
×
Since we multiplied that to the number of hours we must also do that for the number of miles.
×

Using the quadratic formula we get

Therefore the tennis ball is at least 15 feet above the ground from 0.5 seconds to 2.04 seconds