sara has 2 sisters. jenny is eight years older than sara and mary is five years younger than sara if the product of jenny's and mary's ages is 90 find the age of each sister

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

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

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882