C+a=630
a=630-c
2c+5a=2910 using a found above in this we have:
2c+5(630-c)=2910
2c+3150-5c=2910
-3c+3150=2910
-3c=-240
c=80
So 80 children attended the concert.
(6+9)/30=15/30=1/2
The answer is 1/2
Answer:
56.55 ft.
Step-by-step explanation:
Circumference

For this case:
r = 9
Thus:

rounded to the nearest tenth we have
C = 56.55 ft.
Answer:
8780.
Step-by-step explanation:
-6 times -6 is 36 + 8744
Answer:
I'm about 3 months haha, but I'll still help you out. Angle E is equal to 75 degrees.
Step-by-step explanation: