Answer:
x = 3
Step-by-step explanation:
Subtract 8x from both sides.
3x+4−8x=8x−11−8x
−5x+4=−11
Subtract 4 from both sides.
−5x+4−4=−11−4
−5x=−15
Divide both sides by -5.
−5x
−5
=
−15
−5
x=3
Hence the correct answer is C) -23
Further explanation:
We have to put the values of m and n into both expression first separately and then multiply the answers.
Given expressions are:

The values are:

Putting the values in expression 1:

Putting the values of m and n in second expression

Multiplying both expressions:

Hence the correct answer is C) -23
Keywords: Polynomials, Putting values in expressions
Learn more about polynomials at:
#LearnwithBrainly
Answer:
20
Step-by-step explanation:
The formula for circumference is 2
r, where r stands for radius. Therefore, the circumference of this circle can be defined by:
2
r
2
10
20
Hope this helps :) Please contact me if you have any questions!
Answer: IDK hope you get a good grade :0 SORRY
Step-by-step explanation:
Answer:
3n + 2.
Step-by-step explanation:
Just combine like terms.