Using perimeter = (length + width) × 2, find the missing value for each of the following rectangles.

length = 2cm

width = 4cm

perimeter = ? ?

Factor the polynomial 8y^2 - 72 btw "^" means exponent

The scale for a map is 20 miles = 1/2 inch. the distance between two towns on the map is 3 3/4 inches. what is the actual distance between these towns? 150 miles 38 miles 75 miles 135 miles

Find dy/dx using implicit differentiation ln(20+e^xy)=y