Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z = - 32 5x+3y+9z = 20

How to solve-3r+9=-4r+5

Steven is 5.6 ft tall and casts a shadow that is 12.4 ft long. A nearby tree casts a shadow that is 31 ft long. How tall is the tree?

Cody was 165/,/text{cm}165cm165, space, c, m tall on the first day of school this year, which was 10/%10%10, percent taller than he was on the first day of school last year. How tall was Cody on the first day of school last year?

Round the factors to estimate the products. 697 x 82=

A box of cereal is shaped like a rectangular prism. The box is 20 centimeters long and 30 centimeters high. It's volume is 3600 cubic centimeters. Find the width of the box. So basically I need the width using length height and volume.

A pack of cinnamon scented pencils sells for $9.00 what is the sales tax rate of the total cost of the pencils is $9.72

There are 5 fish in a tank 2 die how many are left

A convex heptagon has interior angels of 125, 155, 95, 135, 120, and 115. What is the measure of the 7th angle?

Rachel is planning to run an average of 6.4 miles over three consecutive days. On the first day, she ran 6.6 miles, and on the second day, she ran 6.5 miles.

Solve the proportion 7/5=10.5/b