Sabiendo que AB = 15 cm, BC = 20 cm y A'B' = 12 cm, halla la longitud del segmentoB'C'. ¿Qué teorema has aplicado?

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

Can anyone me with 32,33,36,37,and 40.