(2x+5y=60)
- (2x-5y=-20)
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10y=80
y=8
2x+5(8)=60
2x+40=60
2x=20
x=10
Answer:
12
Step-by-step explanation:
diameter is 2r
r=6
6*2=12
SinA= 16/20= 4/5=0.8 degree
cosA=12/20=3/5=0.6 degree
tanA=16/12= 4/3=1.33 degree
Answer:
The surface area is 1,331 square inches
Step-by-step:
Look at the attachment
The answer is: B
Explanation: 8 is fixed, not related to the number of marbles.