If x = -5 and y = 2x”, then y =

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

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

Which of the following contains a variable?