URGENTE ❗️❗️❗️ Em um número complexo escrito como z = a + bi, dizemos que a é a parte real, b é a parte imaginária e i é a unidade imaginária e por definição podemos dizer que i² = -1:
Considere os seguintes números complexos:
Z1 = 10 + 2i
Z2 = 1 – i
Z3 = – 9 + 5i.

Demonstre o valor de: (Z1 : Z2) + Z3

What two criteria are needed for triangles to be similar

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°