3x2 + 6x = 2? ,9x2 + 2 = 10x. what would be the answers

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15