N=5. All the angles of a triangle equal 180 degrees. So set all of your angles equal to 180. 6n+1+9n-4+108= 180. Combine like terms. 15n-3+108=180. Now subtract 108 and add 3 to the opposite side. 15n=75. Then divide 75 by 15. The answer is five!
X^12/x^9=125
Simplify the left side
x^3=125
Find the cube root of both sides
x=5
Final answer: The number is 5
The first one:))) Hope you do well
Answer:
2
Step-by-step explanation:
The mean is calculated as
mean = 
= 
= 
= 2
Cm3 stands for cubic centimeters :0
