The row-echelon form of the augmented matrix of a system of equations is given. Find the solution of the system.

x = -5; y = 4, z = 1

Step-by-step explanation:

Given the row echelon form as:

This matrix can be represented as:

Therefore:

z = 1

y - z = 3;  

y = 3 + z = 3 + 1 = 4.

Hence, y = 4

x + 4z = - 1;

x = -1 - 4z = -1 - 4(1) = -5

x = -5

Step-by-step explanation:

a 30-60-90 triangle, the rule is:

30 = x \\ 60 = x \sqrt{3} \\ 90 = 2x

The picture shows that the 90 is 12.

Than it means 2x=12

For 30 or side s we need x which is 6.

For 60 the answer is

6 \sqrt{3}

Which gives us C) 6,

6 \sqrt{3}