Can someone answer all of these for me? thx

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

20 ! brainliest ! add and simplify your answer.

Drag the titles to the correct boxes to complete the pairs. the probability that kevin has diabetes and the test