Geometric sequence missing terms

2,

  6, 18

Step-by-step explanation:

If the common ratio is r, the first missing term is 2r; the second missing term is 2r^2, and the last term shown is 2r^3 = 54. Then ...

  r^3 = 54/2 = 27

  r = 3

and the missing terms are ...

  2·3 = 6

  2·3^2 = 6·3 = 18

answer: a

step-by-step explanation:

if xy ~ yz therefore xy would be the same length as yz

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)