The area of a trapezoid is found using the formula a=1/2h(b^1+b^2), where b^1 and b^2 are the parallel sides of the trapezoid and h is the height. the area of a trapezoid is 18km^2 , with bases 5 km and 7 km. what is the height, in

After reading 80% of her e-mails in her inbox, danette still has m unread e-mails. which of the following expressions could represent the number of e-mails danette had in her inbox before she started reading? choose 2 answers: (choice a) 5m (choice b) 1.8m (choice c) 80m (choice d) m/0.8 (choice e) m/1−0.8

Polygon abcd is a rectangle what is the area

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.