Which of the following represents "four times the square of a number is thirty-six"? (4x) 2 = 36
4 2x = 36
4x 2 = 36

X+ y = k 2x + 3y = k + 1 the point of intersection of the lines has an x-coordinate of a.2k + 1 b.-2k + 1 c.2k - 1

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Which number completes the inequality? 2/3 < _ < 7/9