Answer:
What grade is this 12th?
Step-by-step explanation:
Honestly just use desmos or mathyway
Answer:
x = -8 and BDC is 68 degrees.
Step-by-step explanation:
Combine -7x+12 and -8x+48 to get -15x+60. Since BDA is a straight angle put the above equation to get -15x+60=180. Subtract 60 from both sides to get -15x=120. Divide -15 both sides to get -8 as your x value. Plug in -8 to BDC, since both negatives are being multiplied, it would turn to a positive number which is 56, add 12 to get 68 as your final result for BDC.

So, Option B is correct.
Step-by-step explanation:
We need to solve the inequality: 
Solving:

The absolute rule says that if |u|<a and a>0, then -a<u<a
So, applying absolute rule:

We can write it as:

Combining the intervals:

So, Option B is correct.
Keywords: Solving inequalities
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