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%

this is false ^.^ lol

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500