6x+4y=42

-3x+3y=-6 solve eacg system using elimination

Find an identity for cos (4t) in terms of cos (t)

How many seven digit telephone numbers are possible the first digit cannot be three and the number must be a multiple of 10

The teacher has 12 green stickers and 15 purple stickers. Three students are given an equal number of each color sticker. How many green and purple stickers does each student get?

An indirect proof of the statement "If x=2, then √x is not a rational number" coul begin with the assumption that A. x = √2 B. x² = 2 C. √x is rational D. √x is not rational E. x is nonnegative

A recently discovered planet rotates 250 times on its axis in 15 months. At this rate, how many times will the planet rotate in 9 months? F 200 G 140 H 150 J 100

How many tens in 3100

What is the measure of the angle of the dilation that corresponds to ∠BAC of the original figure? A. 45° B. 135° C. 90° D. 22.5°

What is the solution of 5x-6=44

Sector area definition

Simplify the expression (-4k^4j^5) ^3 (k^3j^3) ^7