Ajar contains n nickels and d dimes. there are 28 coins in the jar, and total value of the coins is $2.20. how many nickels and dimes are in the jar?

Sum is 17 and their difference is 3

Which one is true about the hexagons ?

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 =