3(4+3r)
= 12 + 9r
Hope it helped :)
Answer:
9 groups
Step-by-step explanation:
Answer: 43.25?
Step-by-step explanation:
Answer:
54°
Step-by-step explanation:
Your triangle is isosceles. You have been given the third angle, and you have been asked to find the measure of one of the two equal angles. We know that the internal angles of a triangle sum to 180, so 
Answer:
There are 15 men in the dance recital.
Step-by-step explanation:
If 20 people is 4 parts, then 5 people are 1 part. Due to that, 15 people will equal 3 parts.