Answer:

Step-by-step explanation:
I assume that you need simplification of the given expression.
The given expression is:

Using distributive property and multiplying 2 inside the parenthesis and 1 inside the other parenthesis. This gives,

Therefore,
is equal to:

Now, combining like terms using the commutative property of addition, we get:

Therefore, the simplified form is 
Answer: 9x+4=50
Step-by-step explanation:
In this case, we're looking at how many you can buy, not how many CD's you own.
3x12 is 36. 50-36 is 14. so the submarine will be at 14 feet below sea level
Answer:
3
Step-by-step explanation:
1) Substitute 27 as m in the original equation:
27-4n
2) Substitute 6 as n in the original equation:
27-4(6)
3) Multiply 4 and 6 together:
27-24
4) Solve:
3
Answer:
x = 6
Step-by-step explanation:
The 2 angles are vertical angles and are congruent , so
11x - 14 = 7x + 10 ( subtract 7x from both sides )
4x - 14 = 10 ( add 14 to both sides )
4x = 24 ( divide both sides by 4 )
x = 6