Solve the problem.A trough is to be made with an end of the dimensions shown. The length of the trough is to be 
long. Only the angle ? can be varied. What value of ? will maximize the trough's volume?
A. 13°
B. 30°
C. 47°
D. 32°
Answer: B
Mathematics
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Find the volume.Find the volume of the given sphere. Use 3.14 for ?. Round your answer to the nearest thousandth.
diameter = 2.2 cm
A. 44.58 cm3 B. 60.79 cm3 C. 15.198 cm3 D. 5.572 cm3
Mathematics
Provide an appropriate response.Write with fractional exponents: 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Multiply.
A. 
B. 
C. 
D. 
Mathematics
Solve.In baseball, the average number of earned runs given up by a pitcher in 9 innings is the pitcher's earned run average (ERA). For example, if a pitcher allows 90 earned runs in 250 innings, his ERA is found by solving the proportion 
= 
. Find the ERA for a pitcher who gives up 99 earned runs in 229 innings. Round your answer to the nearest hundredth.
A. 20.82 B. 3.89 C. 11.00 D. 2.31
Mathematics