7. A
8. F
9. C
those are the answers on that page
So the total value of a triangle is 180°
So when u calculate the missing angle its value is 42°
180°-(60°+78°) = 42°
You’re solving for y so it would be B
Answer:
4 11/15
Step-by-step explanation: You have to multiple the first fraction to get a common denominator, then subtract
