Step-by-step explanation:
ratio =4:1
total= 4+1 =5
1/5 × 52= 10.4 years
Answer:
28
Step-by-step explanation:
His aces on 80 serve = 35% of 80
= 35/100 × 80
= 28
Answer:
value of pi
Step-by-step explanation:
area of circle = pi x r x r
d= 2 x r
r = 1
pi x 1 x 1 = pi
Step-by-step explanation:
the slower plane traveled x miles in 4 hours.
the faster plane traveled x + 4×80 = x + 320 miles in 4 hours.
so,
x + x + 320 = 3800 miles
2x =3480 miles
x =1740 miles (in 4 hours) .
that means the slower plane's speed was 435 mph.
and the faster plane's speed was 435 + 80 = 515 mph.
