There are 10 coins in a jar. some are dimes and the rest are nickels. the coins are worth a total of 70 cents. which system of e

Question

victus00 [196]

4 years ago

5

There are 10 coins in a jar. some are dimes and the rest are nickels. the coins are worth a total of 70 cents. which system of e

quations represent the situation

Mathematics

1 answer:

Elenna [48] · Answer 1 · 2021-12-13T20:18:15+03:00

Elenna [48]4 years ago

8 0

Eg. d stands for the number of dimes, n stands for the number of nickels
a dime worth 10 cents, 1 nickel worth 5 cents

The equation for "There are 10 coins in a jar" is
d + n = 10

The equation for "The coins are worth a total of 70 cents" is
10d + 5n = 70