Answer:
55 mph
Step-by-step explanation:
Speed = Distance/Time so Time = Distance / Speed.
If the first speed is x mph, the first trip will take 660/x hours.
The second trip will take 660/(x+5) hours.
We want to find x such that (660/x) - 660/(x+5) = 1 (i.e. solving this equation for x).
Multiply both sides by x*(x+5):
660*(x+5) - 660x = x*(x+5)
660x + 3300 - 660x = x2 + 5x
x2 + 5x - 3300 = 0
(x - 55)*(x + 60) = 0
So either x = 55 or x = -60. Since x > 0, x = 55mph.
Answer:
Consider the following non-perfect square number (instructor provides a large number, ex: 1260). Explain whether you would choose the greatest perfect square method or the prime factor method, and then find the simplified square root of that number. (listen to student response) How did you decide to choose that method? Would the other method work? Why or why not? George plays basketball in a week-long camp. On day 2, he scored 8 points. On day 4, he scored 12 points. Explain how to measure his average rate of change. (Instructors can change the scenario to personalize for the students.)
Step-by-step explanation:
HOPE IT HELPS
I belive B. is 700$, for the rest i dont know
Answer:
1. =
Step-by-step explanation:
1.
R.H.S
5.2 + 5.a
(now taking 5 common)
5(2+a)
