Evaluate each expression of (2.6)+(8-4)+1

The figure above shows the lengths of thesides of a rectangle in cm. find the valuesof x and y and then the area of the rectangle. sides: top= 3x - yleft= 3y + 4bottom= 2x + yright= 2x - 3 use both methods, elimination and substitution, if possible.

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

The value of cos 30° is the same as which of the following?