In the 2012 olympics, usain bolt ran the 100m dash in 9.63 seconds. jim hines won the 1968 olympic gold with a time of 9.95 seconds. a. bolt’s time was % faster than hines’. b. hine’ time was % slower than bolt’s. c. hine’ time was % of bolt’s.

a. bolt’s time was 32% faster than hines’.

b. hine’ time was 32% slower than bolt’s.

c. hine’ time was 1.03% of bolt’s.

step-by-step explanation:

given bolt's time was 9.63 seconds

jim time was 9.95 seconds

difference in time between the two runners

9.95-9.63=0.32 seconds

express it as a percentage

0.32×100=32%

jim time= 9.95

bolt's time=9.63

jim's time as a percentage of bolt's time

9.95/9.63 ×100=1.03%

step-by-step explanation:

options

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.