Answer:
$50.70
Step-by-step explanation:
X/2 + 5 = -10
x/2 = -10 - 5
x/2 = -15
x = -15(2)
x = -30
Answer:
B and R
I think that is the name of the lines. If not the the first two lines!!!!
Answer:

Step-by-step explanation:
Given







Required
The weighted average
To do this, we simply multiply each score by the corresponding worth.
i.e.

So, we have:

Using a calculator, we have:

--- approximated
Answer:
6.7
Step-by-step explanation:
Here, we can apply cosine law, 
We the plug in values: 
and solve that CB is around 6.7