What is the answer 2/5 : 1/15 as a unit rate?

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet