You are designing a dome house in the shape of a hemisphere with a 31 ft outside diameter. Two coats of sealer are required to cover and seal the exposed external concrete. If one gallon covers 110 ft 2, how many gallons are required for the bill of materials?
A. 27 gallons
B. 54 gallons
C. 20 gallons
D. 30 gallons
E. 40 gallons
Answer: A
Mathematics
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Evaluate the expression for the given replacement values.-2.9y for y = 5
A. -14.5 B. -145 C. 145 D. 14.5
Mathematics
Simplify the square root. Assume all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Solve.The Pan family took a trip and traveled 265, 349, 439, 698, and 360 miles on 5 consecutive days. Round each distance to the nearest hundred and estimate the distance they traveled.
A. 2000 miles B. 2100 miles C. 2200 miles D. 2300 miles
Mathematics
Solve by using the square root property.(x + 9)2 = 28
A. x = -9 ± 2
B. x = 2
± 9
C. x = -9 ± 2
D. x = ± 2
Mathematics