NEED HELP ASAP Which of the following matrices could be used to solve the system of equations?

3x+2y+z=−5
4x=4
2x+2y+2z=10

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.

What is fraction that is equivalent to 3/8