Abcd is a trapezoid. point e is the midpoint of ad and point f is the midpoint of bc. find the length of segment ef. 4 cm. 6.5 cm. 8 cm. 13 cm

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

What is always true about a positive integer raised to a negative odd power?

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.