Step-by-step explanation:

Answer:
7 / 28
Step-by-step explanation:
7 / 28 = 0 . 28
Answer:
C
Step-by-step explanation:
There isnt infinite because there is an answer of 19, and only so many whole numbers can add up to 19
There isnt 1 because 11+8 and 5+14 both equal 19
Answer:
can't understand the question.
Answer:
78 nickels and 22 dimes
Step-by-step explanation:
Nickels = n, Dimes = d
<u>Number of coins = 100</u>
<u>Total sum in the piggy bank = $6.60 </u>
<u>Consider the first equation in the second:</u>
- 5(100 -d) + 10d = 660
- 500 - 5d + 10d = 660
- 5d = 110
- d = 110/5
- d = 22
- n = 100 - 22
- n = 78
<u>Answer:</u> nickels 78 and dimes 22