samtrevino9921
24.11.2019 •
Mathematics
Abag contains 18 coins consisting of quarters and dimes. the total value of the coins is 2.85$. which system of equations can be used to determine the number of quarters , q , and the number of dimes , d , in the bag
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Ответ:
so
q + d = 18
total cents in all quarters = 25q
total cents in all dimes = 10d
and total cents = 2.85×100 =285
so 2nd equation is
25q + 10d = 285
Ответ:
Car= 8
80/360 x 36
Bike=7
70/360 x 36