Arectangular athletic field is twice as long as it is wide. if the perimeter of the athletic field is 120 yards, what are the dimensions ? what is the width ?

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

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n