Point m is the midpoint of segment ab. if am = 50 – 3x and mb = –20 + 4x, find the value of am am = -10 am = 10 am = -20 am = 20

This is so hard and it’s for a test

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

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?