①expand and simplify
a) 7(x+ 2) + 4(x+5)

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap