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If the ratio of the areas of two figures is 9/4: What is the scale factor of the figures?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Solve the proportion of 16/50=x/156.25