Answer:
D, E
Step-by-step explanation:
All sides are not the same length so not A
Two sides are not the same length so not B
Not all angles are less than 90 so not C
All sides are different length so D
There is a right angle so E
Not all sides are greater than 90 so not F
3619.11 or <span>2412.74 ...............</span>
4x + 15
24 - 8x - 9 + 12x
Add or subtract the common variables
4x + 15
