15. find the rate at which the angle between the ladder and the ground is changing when the base of
the ladder is 7 feet from the wall.

Which is the completely factored from of xy^3-x^3y

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

Write the slope intercept equation for line ab.