-6x-5y-5z=-29;-x+5y+4z=5;4x-5y+3z=- 21

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Enter the missing numbers in the boxes to complete the table of equivalent ratios.time (min) distance (km)? 36 9? 1512 ?