Answer:
C. (-11, -9)
Step-by-step explanation:
a-3b=16
a=b-2
(b-2)-3b=17
b-2-3b=16
-2b=18
-b=9
b=-9
a=b-2
a=-9-2
a=-11
C. (-11, -9)
Supplementary angles measure 180°. Make an equation:
Subtract 28 to leave the variable in the parentheses alone:
Add the 2 x's together:
Your new equation is:
Divide both sides by 2 to leave the variable alone
The supplement measures 76°
2.48 / 0.4
Multiply both top and bottom by 10
(2.48 * 10) / (0.4 * 10)
24.8 / 4
6.2
Hope this explains it.
Answer:189
Step-by-step explanation:
