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

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

x = 12

y = 15

step-by-step explanation: