Mike eats 1/4 of a cheesecake and later eats 2/5 of the cheesecake. What fraction remains?

What is the length of the unknown leg in the right triangle ?

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?