Solve the problem.A reflecting telescope contains a parabolic mirror. If the mirror is 18 inches across at its opening and is 2 feet deep, where will the light be concentrated?
A. 0.2 in. from the vertex
B. 0.8 in. from the vertex
C. 10.1 in. from the vertex
D. 0.1 in. from the vertex
Answer: B
Mathematics
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A. (3z + 4)(5z - 2) B. (3z - 4)(5z + 2) C. Prime polynomial D. (3z - 4)2
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Find the value(s) of the expression.the square roots of 16
A. -256, 256 B. -32, 32 C. -4, 4 D. -8, 8
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