Solve.A radio telescope has a parabolic surface. If it is 1 m deep and 
wide, how far is the focus from the vertex?A = 12 mB = 1 m
A. 3 m
B. 9 m
C. 1 m
D. 36 m
Answer: B
Mathematics
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Find the measure of the dihedral angle indicated.The figure shown is a right prism whose bases are regular hexagons. Find the measure of the dihedral angle between adjacent lateral faces.
A. 120° B. 135° C. 60° D. 90°
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Graph the line and give the domain and the range.3y + 21 = 0
A. D = {-7}, R = (-?, ?)
B. D = (-?, ?), R = {-7}
C. D = (-?, ?), R = {-7}
D. D = {-7}, R = (-?, ?)
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Solve. Round to the nearest percent if necessary.Find the percent of increase when the original amount is 80 and the new amount is 96.
A. 17% B. 16% C. 20% D. 120%
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Find the payment necessary to amortize the loan.$2300; 10% compounded quarterly; 8 quarterly payments
A. $320.78 B. $463.00 C. $295.40 D. $327.73
Mathematics