Answer:
110°
Step-by-step explanation:
I forgot the correct terminology but it's like co-interior angles add up to 180°, so z = 110°
When a () is right next to a number such as the problem you have it means to multiply. so 77 times -1 equals -77. so i'm not sure why -77 isn't one of your answer choices. maybe you mistyped something?
Answer:
c, d, a, b.
Step-by-step explanation:
I'm presuming that the original equation is
.
First, isolate c. You can do this by subtracting
from both sides:
Next, simplify to
.
Then, divide both sides by 7: 
Finally, simplify to
.
Answer:
75%
Step-by-step explanation: