Combine like terms.
a - 
b + 
a
A. 
a - 
b
B. 
a - 
b
C. 
a + 
b
D. - 
a - 
b
Answer: B
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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
Solve the problem.The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from the center of the earth) and inversely as the orbital velocity. If a satellite completes an orbit 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is at 
-4.0px;" /> above the earth at a velocity of 
(Use 
as the radius of the earth.) Round your answer to the nearest hundredth of an hour.
A. 5.44 hours
B. 17.42 hours
C. 37.61 hours
D. 174.17 hours
Simplify.5 ? {(300 - 95 ÷ 5) - [3 ? 27 - (8 - 2 ? 3)]}
A. 960 B. 2786 C. 1010 D. 490
Solve the equation.
= 9
A. 
B. {81}
C. {9}
D. ?