Kelly's dad compares her running times in a marathon to her times for last year's race. He records whether she has increased or decreased her
time for the first three stages of the race. What is the total increase or
decrease in Kelly's time? Did she improve her time? Explain.

the answer is ! ?

just get this app called photo math it should be able to do those

lol 2

step-by-step explanation:

1. 16.64

a^2+b^2=c^2

pr^2=pq^2+qr^2

pr^2=14^2+ 9^2

pr^2=196+81

pr= sqr root of 277

16.64

2. 11.31

c^2-a^2=b^2

18^2- 14^2=b^2

b^2=324-196

b=sqr root of 126

b=11.31

hope it ! (btw im in connections academy to, good luck! )