Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.
x+y-z=-2
2x - y + 3z = 9
x - 4y - 2z = 1

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.

the correct answer is 1.7

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36

good luck on ur quiz test or homework. have a good day : )