Which algebraic expression represents the phrase “two times the quantity of a number minus 12”? 2y - 12

Three coins are flipped. what is the probability that there will be at least two tails?

Factor the polynomial by its greatest common monomial factor.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.