M(9, 8) is the midpoint of RS. The coordinates of S are (10, 10). What are the coordinates of R?

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

An equation where variables are used to represent known values—function notation true or false

The area of a rectangle is 54x^9y^8 square yards.if the length of the rectangle is 6x^3y^4 yards,which expression represents the width of the rectangle in yards