Asolid is made up of three cubes resting side by side. the first cube has a side length of 12 cm, the second cube has a side length of 9 cm, and the third cube has a side length of 6 cm.
what is the volume of the solid?
enter your answer in the box. cm³

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?