A) 36 ÷ 12 + 3 x 2 = 2 b) 23 - 2 x 2 + 4 = 126
2- Resolva as expressões:
a) (7 . 7 + 5) : (18 - 15 : 3 + 5) . 2 =
b) b) (30 - 5 . 6) : (7 + 2 . 10) . (40 - 30 + 5)

the answer is c)8

step-by-step explanaction:

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared

step-by-step explanation:

what is the figure? attach a picture.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.