Answer:C=40 degrees D=76 degrees
Step-by-step explanation:
Because of a theorem angle c and d equal angle DEF
so here is our equation:4y+(7y+6)=116
Open the parentheses
4y+7y+6=116
-6 on both sides
4y+7y=110
11y=110
Divide both sides by 11
y=10
Now we have to substitute
C=4y=4(10)=40
D=7y+6=7(10)+6=70+6=76
