Answer:
X = 5
Step-by-step explanation:
3x + 12 + 9x = 72
okay hopefully i can explain so when your doing this combine like terms so
3x + 9x = 12x
12x + 12 = 72
then you would subtract both sides by 12
+12 = subtract x+12=2
- 12 = add x-12=2
there just flipped so in this case i would subtract 12
12x + ( 12-12) = ( 72-12 )
so 12-12 = 0 and 72-12 is equal to 60
12x = 60
the divide on both sides l but leave the x alone so its just 60 divided by 12 wich is 5
so X = 5
hope this helps with ur homework a little btw go back and redo ur other awnsers with this new concept hope it helps
For the $210 one: $30/g
For the $264 one: $33/g
Therefore, the $210 one is a better deal.
Answer:
The answer to this question is C.
Answer:
11. 
Take out 2x ( greatest common factor )
Factor
Don't forget about the 2x we took out earlier
Solution to 11: 
12. 
This is the difference of squares, so let's use the formula...
if, 
and 
then, the Solution to 12 is:
13. 
First of all, you must find the greatest common factor because there isn't anything else you can do.
Now you can see the difference of cubes...
so, the Solution to 13 is:
Answer:
Option C
Step-by-step explanation:
Step 1: Find the correct method
Option A is incorrect because we don't have m + 6 and 5m - 2
Option B is incorrect because that wouldn't show us the correct value
Option C is correct, once we solve for v, we can plug in v and get the value of m. For example: v + 6 = 5v - 2 → v + 8 = 5v → 8 = 4v → 2 = v. Then we plug it into the other equation m = 2 + 6 → m = 8
Option D is incorrect because that wouldn't show us the correct value.
Answer: Option C
