Solve the problem.A radio telescope has a parabolic surface. If it is 1 m deep and 
wide, how far is the focus from the vertex?A = 16 mB = 1 m
A. 1 m
B. 16 m
C. 4 m
D. 64 m
Answer: B
Mathematics
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Determine if the following is an identity or contradiction.4(x - 7) - 5(x - 7) = 7 -(x + 19)
A. Contradiction B. Identity
Mathematics
Use the given information about the polynomial function f(x) to write its complete factored form.f(x) = x2 - 3x - 10; zeros: -2 and 5
A. f(x) = (x - 2)(x + 5) B. f(x) = (x + 2)(x - 5) C. f(x) = (x - 2)(x - 5) D. f(x) = (x + 2)(x + 5)
Mathematics
Solve the formula for the specified variable.S = 2?rh + 2?r2 for h
A. h = 2?(S - r)
B. h = 
C. h = 
- 1
D. h = hS - r
Mathematics
Write the number without exponents.3.985 × 106
A. 39,850,000 B. 3,985,000 C. 398,500 D. 239.1
Mathematics