Answer:
I believe this could happen 27 different ways.
Step-by-step explanation:
Answer: 4
Step-by-step explanation: if 2 times y(2) is 4 what plus 4 equals 12...8 right? but you have to take 2 and multiply it by 4 in order to get 8. So the answer is 4. Hope this helps! :)
You are given the masses of four planets.
Add them together, and then divide your sum by 4.
That will be the "average planet mass" for these 4 planets.
-15 = 6x + 15 -10x
1st. You combine like terms
(6-10)x
-15 = -4x + 15
2nd. You move variables to the left side and change the sign
-15 = -4x + 15
+4x +4x
4x - 15 = 15
+15 +15
4x = 30
3rd. You divide both sides of the equation by 4
(4x) /4 = (30) /4
x= 30/4
4th. Reduce the fraction by 2
30/ 4 = 15/2
Answer is 15/2
