Answer:
3. 160
4. 105
5. 95
6. 30
7. 86
8. 130
All triangles equal 180 so when you add the other 2 degrees in the triangle then subtract that by 180 then you get the third angle. The a straight line also equals 180 degrees so when you get the third angle subtract it by 180 then you get the answer to the "?"
That's how I was taught so, hope I got it all right! : )
Answer:
If you simplify it you get d^2-4d
Step-by-step explanation:
Answer:
0.98
Step-by-step explanation:

Answer:
The multiplicative identity property allows this to be true.