A class of students is randomly divided into two groups. One group meditates before taking a test. The other group does not. The test scores of the groups are compared. What type of study is described?

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

Asequence is a function whose is the set of natural numbers