If x is jointly proportional to the cube of y and the fourth power of...
If x is jointly proportional to the cube of y and the fourth power of...
If x is jointly proportional to the cube of y and the fourth power of z. In what ratio is x increased or decreased when y is halved and z is doubled? (a) 4:1 increase (b) 2:1 increase (c) 1:4 decrease (d) 1:1 no change?
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