What percent is represented by the shaded portion on this 10×10 grid

Solve 2x+y=3 x+y=5 in substitution method

What is the circumference of a circle with an area of 50.24 cm²?

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