There are 28 books on the shelf. one-fourth of the books are about animals. two are adventure. the rest are mystery. how many books are mystery show your work. plz

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm