Answer:
15 quarters
Step-by-step explanation:
15 quarters = $3.75
21 dimes = $2.10
15 + 21 = 36 coins
3.75 + 2.10 = 5.85
3.5 pounds equals 56 ounces
Hi Kristian
a - 3b = 22
a = b - 2
We need to solve a = b -2 for a
First, we need to substitute b - 2 for a in a - 3b = 22
a - 3b = 22
b - 2 - 3b = 22
-2b - 2 = 22
-2b = 22 + 2
-2b = 24
b = 24/-2
b = -12
Now substitute -12 for b in a = b - 2
a = b -2
a= -12 - 2
a= -14
Thus, the solution is a = -14 and b = -12
The correct option is the last one (-14,-12)
If you have questions about my answer, please let me know.
Good luck!
i think an estimate for the answer would be around 90 degrees
