Solve this linear system using matrices:

x1 + 2x2 − x3 = −4
x1 + 2x2 + x3 = 2
−x1 − x2 + 2x3 = 6
x1=
x2=
x3

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Ineed no it anyone can see this