We know that the opposite angles are equal
So...
3y - 20 = 2x + 6 and 4x = 4y + 4
That is the system of equations you need to solve
You should do 47
She spent 10 minutes on her Spanish homework
Box A : 8.25
Box B : 8.2
Box C : 8.225
Box D : 8.05
heaviest box is box A
Lets solve it using a system of equations, c is the price of crayons and p the price of reams of paper, so we have:
1c + 5p = 54
5c + 3p = 50
those equations represent the situation. Lets solve the system multiplying the first equation by -5 and adding it to the second, we have:
-5c - 25p = -270
<span> 5c + 3p = 50
</span>---------------------
0 - 22p = - 220
22p = 220
p = 10
and now substitute in the original equation:
<span>1c + 5p = 54
</span><span>1c + 5(10) = 54
</span>c = 4