Simplify the expression. Assume that all variables are positive.
A.
B.
C. 4
D.
Answer: C
Mathematics
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Find the focus and directrix of the parabola.x = 9y2
A. , x = -
B. , x =
C. , y = -
D. , x = -
Mathematics
Change to the measure indicated.79.20 meters to kilometers
A. 0.0792 km B. 79,200 km C. 0.792 km D. 7,920 km
Mathematics
Write the rational expression in lowest terms.
A. -4xy3 B. -4x2y3 C. -15x2y2 D. -4x2y2
Mathematics
Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = ; g(x) = 5x + 20
A. (-?, -4] ? [0, ?) B. [-4, ?) C. (-?, ?) D. [0, ?)
Mathematics