Solve.
= -1
A. -1
B. 1
C. -1, 1
D. -
, 
Answer: C
Mathematics
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Write an equation of the line.
A. y = - 3x
B. y = 
x
C. y = 3x
D. y = - 
x
Mathematics
Solve the problem.Given the area A of a circle, the formula r = 
can be used to calculate the radius of the circle. Find the area when the radius is 8.6 cm. Express your answer in terms of ?.
A. A = 73.96 ?2 cm2 B. A = 73.96 cm2 C. A = 73.96? cm2 D. A = 76.04? cm2
Mathematics
Solve the inequality. Express your answer in set notation.x2 < 9
A. {x| x < -3 or x > 3} B. {x| 3 < x < 3} C. {x| x < 3} D. {x| -3 ? x ? 3}
Mathematics
Solve the problem.How long would it take to drive 400 kilometers if your average rate of speed was 50 kilometers per hour? Use the formula d = rt.
A. 45 hr B. 9 hr C. 8 hr D. 200 hr
Mathematics