Use gauss-jordan reduction to solve each of the following systems. (a) x1 + x2 = -1 4x1 – 3x2 = 3 (b) x1 + 3x2 + x3 + x4 = 3 2x1 – 2x2 + x3 + 2x4 = 8 3x1 + x2 + 2x3 – x4 = (c) x1 + x2 + x3 = 0 x1 - x2 – x3 = 0 (d) x1 + x2 + x3 + x4 = 0 2x1 + x2 - x₂ + 3x4 = 0 x₂ - 2x2 + x3 + x₂ = 0 |

Which of the following is the correct ratio for converting kilograms to grams

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?