Omi67

I don't understand piecewise functions.  Please explain.

a. Solve this system of equations using Gaussian elimination.

What is an equation of the line that passes through the point (-6, -7) and is perpendicular to the line 6x + 5y = 30?

Für die Lösung von Gleichungssystemen gibt es mehrere Verfahren:

1. Additionsverfahren

2. Einsetzungsverfahren

3. Gleichsetzungsverfahren

4. Zeichnerisches verfahren

Bei mehr als 2 Variablen verwendet man das Gauß - Verfahren.

(a-1)(b-2)(c-3)(d+2019)=2020

a = 2

b =3

c =4

d =1

(2 - 1)(3 - 2)(4 - 3)(1 + 2019) = 2020

1*1*1*2020 = 2020

a = 2

b = 1

c = 2

d = 1

(2 - 1)(1 - 2)(2 - 3)(1 + 2019) = 2020

1*(-1)*(-1)*2020 = 2020

A triangle has vertices A(1, 1), B(2, 4), and C(4, 2). Line p is parallel to side AB and contains point C. Write an equation for line p.

The midpoint of the line segment between (x,y) and (2,4) is (-7,0) . Find (x,y) .

The triangle is equilateral.

Theorem of Thales

180° - 90° - 14° = 76 °

x°+2x°+4x°+5x°=12x°

360x° : 12x° = 30

                x = 30

2x°+5x°+x°+20°=180°  | -20°

                   8x°=160°

      160x° : 8x° = 20

                     x = 20