You add up all of the sides
Answer:
b=-3
Step-by-step explanation:
-7b=21
-7b/-7=21/-7
b=-3
Answer:
29%
Step-by-step explanation:
20 divided by 70 which is .285 which is .29
If side Op and PQ are the same their angle measurements are also the same so we have 37+37+P=180
74+P=180
P=180-74
P=106
So