A total of 2600 twenty dollars and ten-dollar coins are In a Piggybank. For every twelve twenty-dollar coin in the piggy bank there is 1 $10 dollar coin, how many twenty-dollar coins are in the piggy bank

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =