What is 0.000000685 written in scientific notation?

Elijah is selling coupon books for a school fund raiser. Th coupon book sell for $11. The school gets $8 and $3 goes to Elijah homeroom.

Y=-x^2 y=-7x^2 y=2/3x^2

What is the solution to this system of linear equations? 2x + y = 1 3x - y = - 6 (-1, 3) (1, - 1) (2, 3) (5, 0)

If Andre made another countryard scale drawing at a scale of 1 to 12, would this drawing be smaller or larger than the first drawing? Explain your reasoning.

69108 in expanded form

Dan must do homework for 1/2 of an hour and clean his room for 1/3 of an hour before he can play. What faction of an hour must Dan do homework and clean before he can play

Solve for x. 34+x=12 Enter your simplified answer in the box.

An expression is shown below: 3pf^2 - 21p^2f + 6pf - 42p^2 Part A: Rewrite the expression so the GCF is factored completely. Part B: Rewrite the expression completely factored. Show the steps of your work.

Identify the variable expression that is not a polynomial. A. Y+1 B. C. x^12 D. 23

6. Molly uses 192 beads to make a bracelet and a necklace. It takes 5 times as many beads to make a necklace than it does to make a bracelet. How many beads are used to make the necklace?