Astudent had grades of 84, 89, 92, 72 and 80 on five tests. what was her grade on the next test if her average was then exactly 84?

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

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.