Solve.The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 11-kg object stretches a spring 85 cm, find the distance when the weight is 21-kg. Round your answer to the nearest whole centimeter.
A. 117 cm
B. 8 cm
C. 162 cm
D. 3 cm
Answer: C
Mathematics
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A. {7.2} B. {7.0} C. {-49} D. {9}
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Perform the operation indicated. Simplify.
- 
A. - 
B. 
C. - 
D. 
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Write as a proportion.If 3 pounds of steak costs $18, then 4 pounds will cost $24.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
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Find the center and radius of the circle.x2 + y2 - 16x + 18y + 136 = 0
A. (8, -9); r = 3 B. (-8, 9); r = 9 C. (9, -8); r = 9 D. (-9, 8); r = 3
Mathematics