Edward wants to determine which skateboarder won a race. the actual time taken by four skateboarders to skate the same distance is shown below: skateboarder a b c d time (in seconds) 4.28 4.24 4.26 4.25 if the stopwatch can measure to the nearest tenth of a second, which skateboarder will show as having a different time from the others? skateboarder a skateboarder b skateboarder c skateboarder d

skateboarder B

Step-by-step explanation:

Actual time taken by skateboards to skate are

4.28, 4.24, 4.26, 4.25 seconds.

If the stopwatch can measure to the nearest tenth of a second then the actual times will be recorded as

(A) 4.28 ≈ 4.3

(C) 4.26 ≈ 4.3

(D) 4.25 ≈ 4.3

(B) 4.24 ≈ 4.2

So skateboarder B will have different time from the others.

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9