Answer:
x = 8
Step-by-step explanation:
Complimentary angles are angles that add up to 90 degrees. If ABC and DBC are complimentary, then when added together, it equals 90 degrees.
ABC + DBC = 90
6x+13+4x−3 = 90
10x+10 = 90
10x = 80
x = 8
Answer:
C 315
Step-by-step explanation:
(12 + 30) * 15/2 = 315
The answer is d I just did that paper mark me Brainly
Answer:
Here is your answer C
Step-by-step explanation:
Combine like terms
9r+r=10r^2
7b+b=8b^2
10+10r^2+8b^2+4n