The track of a roller coaster is 1.265 miles long. the ride lasts for 2.3 minutes. what is the average speed of the roller coaster in miles per hour?

Answer : The average speed of the roller coaster is, 33 mile/hr

Explanation :

Average speed : It is defined as the ratio total distance to total time.

Formula used :

As per question,

Total distance traveled = 1.265 miles

Total time taken = 2.3 min = 0.038 hr    (1 hr = 60 min)

Now put all the given values in the above formula, we get:

Therefore, the average speed of the roller coaster is, 33 mile/hr

answer: you have to send a photo of the question

step-by-step explanation:

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.