Whats the total surface area of a rectangle that has a width of 6 height of 4 and length of 4

The parabola opens: y=√x-4 (principal square root) up down right left

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints