Answer:
169 quarters
Step-by-step explanation:
Recall that 1 quarter = 25 pennies, and so the conversion factor is
1 quarter
-------------------
25 pennies
Use this conversion factor to convert 4246 pennies into quarters:
1 quarter
------------------- * 4246 pennies = 169.84
25 pennies
Obviously we cannot get our hands on 0.84 quarters, so round the above result down:
4246 pennies = 169 quarters plus 21 leftover pennies.
Short side length = x
Medium side = x + 7
Long side = 5x
Total 49, so
x + x + 7 + 5x = 49
If you combine like terms:
7x + 7 = 49
Subtract 7 from both sides
7x = 42
Divide both sides by 7
x = 6 inches.
5x - y = -4 is the standard form
