The following question has two parts. first, answer part a. then, answer part b.
part a
a high school athlete ran the 100 meter sprint in 13.245 seconds. round the time to the nearest tenth. enter the answer in the box.
seconds
part b
explain how you arrived at the answer. include any rules that you followed.

  Part A:  13.2

  Part B:  see below

Step-by-step explanation:

Part A:

13.245 rounded to tenths is 13.2

Part B:

The rule is ...

  Add 1 in the number place you're rounding to if the digit to its right is 5 or more. Drop (or zero) all digits to the right of the place you're rounding to.

Here, the digit to the right of the tenths place is 4, so no action is taken other than dropping digits to the right of the tenths place.

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation: