Answer:
11 dimes and 9 quarters
Step-by-step explanation:
lets make x quarters and y dimes
Here is the equation we have so far:
x+y=20
BUT it can also be used to determine the values:
0.25x+0.10y=3.35
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0.25x+0.10y=3.35
x+y=20
Im going to solve for quarters first.
Multiply everything by 0.25 on the bottom equation: 0.25x+0.25y=5
Now you have two equations:
0.25x+0.10y=3.35
and 0.25x+0.25y=5
subtract out the 0.25x
.15y=1.65
y=11
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you have 11 dimes.
x+11=20
x=9
You have 9 quarters
A its going up but 0.2 every time
Answer:
Step-by-step explanation:
<u>Given</u>
<u>Substitute x with -3</u>
-
h(-3) = (-3)^-2 = 3^-2 = 9^-1 = 1/9
40 + 0.20m = 25 + 0.35m
40 - 25 = 0.35m - 0.20m
15 = 0.15m
15 / 0.15 = m
100 = m.....they will be the same at 100 miles