Which of the following situations illustrates a joint variation?
A. Water pressure on the ears of a diver depends on tha depth of the water.
B. The volume of a right circular cones varies directly with the square of it's radius and its height.
C. The cost per kilogram of rice varies directly with the number of kilograms of rice bought.
D. The time a painter paints a wall is related to the area of tha wall painted.
A. Water pressure on the ears of a diver depends on tha depth of the water.
B. The volume of a right circular cones varies directly with the square of it's radius and its height.
C. The cost per kilogram of rice varies directly with the number of kilograms of rice bought.
D. The time a painter paints a wall is related to the area of tha wall painted.
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Verified answer
Answer:
Which of the following situations illustrates a joint variation?
A. Water pressure on the ears of a diver depends on the depth of the water.
B. The volume of a right circular cones varies directly with the square of it's radius and its height.
C. The cost per kilogram of rice varies directly with the number of kilograms of rice bought.
D. The time a painter paints a wall is related to the area of the wall painted.
Explanation:
Unlike direct variation, joint variation has two or more variables on the left side of its equation together with the constant of variation (k). It is like direct variation, but with more variables.
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