13 Triangle ABC is similar to triangle DEF. Which proportion can be used to find the length of DE in centimeters?

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

What is negative 3/9 times negative 2/8 ?

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse