Answer:
60 cm
Step-by-step explanation:
90 divided by 3 times 2
Answer:
<h2>A. x = -1 or x = 3</h2><h2>B. first</h2>
Step-by-step explanation:

Answer:
1. 90
2.60
3.30
4. 40
5. 80
6. 60
7. 30
8. 30
9. 120
Total for all triangles=180
Step-by-step explanation:
In all the problems, you have to solve for y. This can be done because the three angles are supplementary For example, in the first diagram, you have:
3y+2y+y=180
6y=180
y=30
It's fairly easy to solve from there. Just more multiplying and subtracting.
This is no mistake he is the one