Solve the proportion:

You can find the distance from a thunderstorm by counting the number if seconds between the lighting flash and thunder. For example, if the time difference in 21 seconds, then the storm is 7 km away. How far away is the storm if the difference is 9 seconds?

3 answers

Let's set up a proportion.

7/21 = x/9

Cross multiply and solve for x.

Thanks Ms. Sue

=3x

Yes, the storm is 3 km away.

Similar Questions

1. which ratios form a proportiona. 3/15 , 12/55 b. 8/24 , 12/35 c. 5/18 , 25/90 d. 4/11 , 16/25 4. solve the proportion using
1. 49 answers
If I am making a map that has a distance of 200 mm, and the actual distance is 700m. How do I find the calculations to know how
1. 0 answers
Learn with an exampleor Watch a video What number is shown? Each small cube represents 1. one hundred counting blocksone hundred
1. 1 answer
108 is 36% of what number? Write and solve a proportion to solve the problem.First write the proportion to find the missing
1. 38 answers