Solve the problem.A reflecting telescope has a parabolic mirror for which the distance from the vertex to the focus is 30 feet. If the distance across the top of the mirror is 50 inches, how deep is the mirror in the center?
A. 
in.
B. 
in.
C. 
in.
D. 9 in.
Answer: B
Mathematics
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Perform the indicated division and find a simplified expression.If a submarine goes 2k3 + 13k2 + 10k - 25 miles in 2k + 5 hours, what is its rate of speed?
A. k2 + 4k - 5 miles/hr B. k2 + 9k - 5 miles/hr C. k2 - 4k + 5 miles/hr D. k3 + 4k2 - 5k miles/hr
Mathematics
Solve the equation.9x - (3x - 1) = 2
A. - 
B. - 
C. 
D. 
Mathematics
Use conversion factors to convert the units of measure.0.25 pounds to ounces
A. 8 oz. B. 2 oz. C. 6 oz. D. 4 oz.
Mathematics
Write the fraction in lowest terms.
A. 
B. 
C. 
D. 
Mathematics