8.9 because I used a calculator
Answer:
surface area is 216 and the volume is 216
Answer:
Yes
Step-by-step explanation:
Since they have 3 identical sides, they are congruent by SSS congruence.
HTH :)
Answer:
4) -4
5) -6x-20
Step-by-step explanation:
Add x with x's and numbers with numbers
4) -6x + 9 + 6x -13
-6x+6x+9-13
x's cancel
9-13 = -4
5) 8x - 9 -11 -14x
8x-14x-9-11
-6x-20
hope this helps