If 3x+k 2x+9 x+13 are three consecutive terms of an ap fine k

Step-by-step explanation:

Since there are in arithmetic progression, 2(2x + 9) = (3x + k) + (x + 13).

=> 4x + 18 = 4x + 13 + k

Hence k = 5.

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.