Tell whether the angle is acute, right, obtuse, or straight.
A. Acute
B. Straight
C. Obtuse
D. Right
Answer: A
Mathematics
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Find the vertex of the parabola.f(x) = -5x2 + 30x - 43
A. (2, 3) B. (3, 2) C. (-3, 2) D. (-3, -2)
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Evaluate the integral.
a. 26.4
b. 31.4
c. 46.4
d. 36.4
e. 41.4
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Decide on a suitable restriction on the domain so that the function is one-to-one and the range is not changed.f(x) = 
A. [-5, 5) B. [5, ?) C. (-?, 10) D. [-5, ?)
Mathematics
Without using a calculator, give the exact trigonometric function value with rational denominator.csc 45°
A. 
B. 1
C. 
D. 
Mathematics