Jenny has some nickels and some dimes. The value of the coins is $1.65.
There are 12 more nickels than dimes.
How many of each kind of coins does
Jenny have?

7 dimes and 19 nickels

Step-by-step explanation:

d = dimes

n = nickels

The total amount is

.05n + .1d =1.65

He has 12 more nickels than dimes

12+d = n

Substitute this into the first equation

.05 (12 +d)  + .1d =1.65

.6 + .05d +.1d = 1.65

Combine like terms

.6 + .15d = 1.65

Subtract .6 from each side

.15d = 1.65-.6

.15d = 1.05

Divide by .15

.15d/.15 = 1.05/.15

d = 7

Now find n

12+d = n

12+7 = n

19 = n

no not all of them.

step-by-step explanation:

some of them have a square base.

ghjmutmum

step-by-step explanation: