They can NOT. A right angle is 90°. An obtuse angle is greater than 90°. All the angles in a triangle must add up to exactly 180°. If two angles are greater than 90° then they will add up to greater than 180, beacuse 90 plus 90 equals 180. You cannot have a triangle with two obtuse angles because they will add up to greater than 180°.
First 8.58
Second 8.508
Third 7.5
Fourth 7.058
B. Domain: [-3, 0]; Range: [- 2, 2]
domain is the x axis, range is the y axis
The answer should be D. -7x-8
2(x-4)+6x-5x times 3
distribute the 2
2x-8+6x-5x times 3
Multiply the -5x and 3
2x-8+6x-15x
Combine like terms
-7x-8