Joanie believes that you cannot use cross products to solve the proportion 50/3=75/x for x. she says that if you multiply both sides of the equation by x, you get 50x/3=75. then, if you multiply both sides of the equation by 3, you get 50x=75, which is a different equation than you would get if you cross multiplied. what mistake did joanie make in her reasoning?

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3