What is the value of z in the solution of the following system of equations? 3x+ 5y +7z= 3
2x+4y+6= 6
4x+3y + 5z = -6
A. 6
B. 4
C. -2
D. -6

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%