Ind the sum of (–4 + i) and (10 – 5i).

–3 + 5i

–3 - 5i

6 – 4i

6 – 6i

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.

Simplify this expression. 8x 16(x + y)

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap