how do i know whether to subtract or divide when isolating a number? (example, 2a, do i subtract or divide?)

Which algebraic rule describes the transformation? A) (x, y) → (-x, y) B) (x, y) → (x, - y) C) (x, y) → (-x, - y) D) (x, y) → (-y, - x)

1/2 divided by 1/3 and simplified

The ratio of length to width is 2:3. Fine the length of the rectangle when the area is 150 in.^2

Which equation graphs as a vertical line with an undefined slope? A) y = 3x B) x = 2 3 C) y = 2 3 D) y = - 2 3 x + 1

Find a polynomial f (x) of degree 3 that has the following zeros. 0,-8,3

Decide whether a discrete or continuous random variable is the best model for each of the following variables: (a) The time until a projectile returns to earth. (b) The number of times a transistor in a computer memory changes state in one operation.

The rquation of a citcle is x^2+y^2=16 what is the radius of the circle

BETH and Carley are selling candy bars to raise money for new cheer outfits. Beth has sold one less than twice the number of candy bars carely has sold. If they have 188 candy bars in all how many has Beth sold?

Mr. Smith has 28 sixth graders and 35 seventh graders. If he wants to break the two grades into identically sized groups without any students left over, how many students should be in a group

1. What is a perfect square? 2. What is the square root of 4x²? 3. What is the square root of 25? 4. Factor 4x² + 20x + 25.