Solve and, when appropriate, round the answer to the nearest tenth.The radius of a sphere depends on its surface area, S, and is given by the formula r = 
.What is the surface area of a sphere with radius of 6.7 inches?Use 3.14 for ?.
A. 21 square inches
B. 563.8 square inches
C. 141 square inches
D. 84.2 square inches
Answer: B
Mathematics
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Solve by addition or substitution.x + y = -10x - y = -4
A. (7, -2) B. (-7, -3) C. (-8, -2) D. ?
Mathematics
Evaluate. If necessary, find common denominators and simplify completely.4
+ 12
A. 15
B. 16
C. 17
D. 4
Mathematics
In the bar graphs below, a projection of population by age groups and gender for two different countries is given as a percent of the country's population at the time. Provide an appropriate response.Population Pyramids for Countries A and B: 2006 and 2050
What is the 2050 projection for the 0-4 age group for Country B?
A. About 5.7% B. About 10.3% C. About 5.5% D. About 16.8%
Mathematics
Solve.x2 - 36y2 = 49x + 6y = 4
A. 
B. 
C. 
D. No real solutions exist.
Mathematics