Mathematics, 15.07.2019 00:30, jackrider1598
Ihave a pouch with pens and pencils in it. at the moment, the ratio of pens to pencils is 3: 5. if phil gives me 3 pens in exchange for 9 of my pencils, i will have an equal number of pens and pencils. how many pens will that be?
Answers: 1
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Mathematics, 21.06.2019 20:30, strawberrymochi390
What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)
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