Listed below are the times for the girls’ 400 meter relay team. Polly 12.37 seconds

1.13

Step-by-step explanation:

add them all together. 51.03

51.03-49.9=1.13

1/9= 0.11111 > Equivalent

7/9= 0.77778> Equivalent

9/10= 0.90000> Exact

Explanation:

a. We are given that a fraction number

We have to find that is exact decimal or not.

Calculator display for = 0.11111

It is not an exact decimal equivalent.

1/9 = 0.11111

A fraction is an exact decimal when the denominator can be expressed as 2" . 5m.

9 cannot be expressed as 2.5m

Hence, it is not an exact decimal equivalent.
b. 7/9

Calculator display for 7/9 = 0.77778

It is not an exact decimal equivalent because the denominator of given fraction is 9 which can not be expressed as 2".5m.

Hence, it is not an exact decimal equivalent.

C. 9/10 = 0.9

10 = 2.5

It is an exact decimal equivalent because the denominator 10 can be expressed as 2.5.

Hence, the given decimal is an exact decimal equivalent.