Find the value of x.
8.5, 9, 7.5, 6, 7, x; The mean is 8

How do you write something in scientific notation?

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read