1. Imagina que x és un nombre enter qualsevol. Expressa de forma algebraica: a) Els nombres enters múltiples de 5. b) La suma de qualsevol enter amb la seva meitat. c) El producte de dos nombres enters consecutius. d) La quarta part de la suma de dos nombres enters consecutius.

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

Find the arc length of the semicircle. 7the grade