3) Considerando os conjuntos A = {0, 2, 4, 6} e B = {7, 8, 9, 10}, use o símbolo  ou  para relacionar:
a) 2 e A
b) 10 e B
c) 4 e B
d) 6 e A
e) 0 e B
f) 10 e A
g) 6 e B
h) 10 e A

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Ineed with this problem 21 show steps