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
Answer:
i think 1h but wait for someone else to answer to
Answer:
(1-0.01p)/n
Step-by-step explanation:
Mathematically;
Percentage of student playing at least one sport = 100% - Percentage of students playing no sport
Mathematically, that would be;
Percentage playing no sport = 100% - p%
So, to find this in n 7th graders
we have;
(100-p)/100 * n
= 100-P/100n = 1/n - P/100n
= 1/n - 0.01p/n
= (1-0.01p)/n