Darya and Kana are both practicing to swim in a race. During practice, Darya swam 13 laps with
an average time of 23.5 seconds per lap. Kana
swam 10 laps, with an average time of 25.98
seconds per lap. It took longer for Darya to swim
13 laps than for Kana to swim 10 laps.
How much longer?
45.7 s
102.74 s
7.44 5
92.74 5


45.7 s

Step-by-step explanation:

Darya:

Number of laps = 13

Average time per lap = 23.5 seconds

Total time to swim 13 laps = Number of laps × Average time per lap

= 13 × 23.5

= 305.5 seconds

Kana:

Number of laps = 10

Average time per lap = 25.98 seconds

Total time to swim 10 laps = Number of laps × Average time per lap

= 10 × 25.98

= 259.8 seconds

It took longer for Darya to swim

13 laps than for Kana to swim 10 laps.

How much longer?

= 305.5 seconds - 259.8 seconds

= 45.7 seconds

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

its the second choice.

step-by-step explanation:

the elements in the range will be 7 less than the elements in the domain.