Find the error in the problem below 19 - 2k = 3k - 1
-2k-2k
19 = 1k - 1
+1 +1
k = 20

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left