Which expression is equivalent to the given expression?

19x-23x

19 (x-23)

x (23-19)

x (19-23)

19x (1-23x)

Which phrase best defines a trapezoid? A. congruent diagonals B. exactly one pair of parallel sides C. exactly two congruent sides D. no sides congruent

Which of these figures must be a rectangle? A.) aParallelogram with four congruent sides. B.) a trapezoid with at least one right angle C.) a trapezoid with two congruent sides D.) a Parallelogram with at least one right angle

Solve tan^2 x / 2 - 2cos^2 x-1

How many times does 50,000 go into 37,000,000

How many diagonals can be drawn from one vertex

Find the lcm of the numbers, 2,4, and 11

Evaluate - (2^6) (2^3)

Find the sum of 2/3 + (-1/3)

An investigator wishes to estimate the proportion of students at a certain university who have violated the honor code. having obtained a random sample of n students, she realizes that asking each, "have you violated the honor code

Write an expression for the verbal phrase: the product of the square of x and seven