Find the area of a sector of a circle having radius r and central angle ?. If necessary, express the answer to the nearest tenth.r = 44.6 cm, ? = 
radians
A. 76.5 cm2
B. 480.8 cm2
C. 5.4 cm2
D. 240.4 cm2
Answer: D
Mathematics
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Determine whether the following is always true or not always true. Given reasons for your answers.c(u ? v) = cu ? cv (any number c)
What will be an ideal response?
Mathematics
Solve the proportion: 
= 
A. 18.75 B. 48 C. 6 D. 240
Mathematics
Use a number line to find the sum.7 + (-5)
A. -12 B. 2 C. 3 D. -2
Mathematics
Find all numbers that must be excluded from the domain of the rational expression.
A. x ? -2, x ? 7 B. x ? 0 C. x ? -7, x ? 2 D. x ? 2
Mathematics