Answer:
he swam on average, 90 yards per minute.
Answer:
h = 9
Step-by-step explanation:
cylinder A = 
*4 = 113.0973355 
Cylinder B = 113.0973355 
113.0973355
= 
*h
113.0973355
/ 4
= h
8.999999999998 = h
I think b/c of the rounding error of rounding off pi, that h= 9
Answer:
aa
Step-by-step explanation:
a
He should buy 4 packs of 35ct.And 1 pack of 12ct he may have some extra
For the same amount set up two equations set equal to each other.
$70h + 130 = 80h + $40
Subtract 80h from both sides
-10h + 130 = 40
subtract 130 from both sides
-10h = -90 divide both sides by -10
h = 9 hours
CHECK
70(9) + 130 = $760
80(9) + 40 = $760