If y is directly proportional to the square root of x and y = 20 when x = 16, find (i) an equation connecting x and y, (ii) the value of y when x = 10

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step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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