Which of the statements is true about the polygons below

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Nikolas calculated the volume of the prism. his work is shown below.

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible