What is 5.63 x 10^-6 in decimal form

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]

What is the area of this parallelogram? 434.28 cm2 263.67 cm2 527.34 cm2 217.14 cm2