Answer:
I agree with the statement.
Step-by-step explanation:
As long as both numbers are being multiplied by the same quantity, you will always end up with the same number.
(6) / (4.5) = 4 / 3 = 1.333...
The level increased by 33-1/3 % .
The old level was 75% of the new level.
The amount of water in the pool also had to
increase 33-1/3 % . If you didn't have that
much water to put in the pool, you couldn't
change the surface level from 4.5ft to 6ft .
Answer:
37 dimes and 10 nickels
Step-by-step explanation:
let d = # dimes
let n = # nickels
we can set up a system of equations:
n + d = 47
.05n + .10d = 4.2
if we solve the first equation for 'n' we get:
n = 47-d
now we can substitute this in for 'n' in the second equation:
.05(47-d) + .10d = 4.2
2.35 - .05d + .10d = 4.2
2.35 + .05d = 4.2
subtract 2.35 from each side to get:
.05d = 1.85
d = 1.85÷.05
d = 37
if d+n = 47 and d=37 then n = 10
Check:
.05(10) + .1(37) should equal 4.2
.50 + 3.7 = 4.2 [It Checks Out]
