Question

How long does it take an​ SR-71​ Blackbird, one of the fastest U.S.​ jets, to make a surveillance run of 8912 miles if it travels at an average speed of Mach 3​ (2228 mph).

Answer 1

Answer:

Four hours.

Step-by-step explanation:

Realize that mph is miles PER hour. Therefore the amount of mph given (2228mph) would mean every hour, 2228 miles is traveled.

So with that being said you would want to then divide 8912 (the distance they need to travel) by 2228 to see how many hours it would take. Use a calculator (or if you're that good do it in your head) and 8912/2228=4 in meaning 4 hours.

Answer 2

Answer:

It takes 4 hours to make a surveillance run of 8912 miles.

Step-by-step explanation:

This question can be solved by a simple rule of three.

Average speed of 2228 mph.

So 1 hour -> 2228 miles. How many hours for 8912 miles?

1 hour - 2228 miles

x hours - 8912 miles

$2228x = 8912$

$x = \frac{8912}{2228}$

$x = 4$

It takes 4 hours to make a surveillance run of 8912 miles.