Subtract. Write fractions in simplest form.-2 1/4 - (-1 3/4)

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth