Here is the equation:

In the equation, 6 is being multiplied by x - 8. There are two ways to solve this equation.
FIRST METHOD
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You need to remove the parentheses by multiplying everything in the parentheses by 6.

Multiply:

Remember:
NEGATIVES
- Negative(-) times(×) negative(-) = positive(+)
- Negative(-) times(×) positive(+) = negative(-)
- Negative(-) divided(÷) by positive(+) = negative(-)
- Negative(-) divided(÷) by negative(-) = positive(+)
POSITIVES
- Positive(+) times(×) positive(+) = positive(+)
- Positive(-) times(×) negative(-) = negative(-)
- Positive(+) divided(÷) by positive(+) = positive(+)
- Positive(+) divided(÷) by negative(-) = negative(-)
Now combine the two values and rewrite the equation:

Since you're looking for x alone, you will need to remove the -48. This can be done by adding 48 to both sides, -48+48=0, which cancels it out).

Lastly, divide both sides by 6 to leave x alone.


SECOND METHOD
While the first step is somewhat complicated, there is a much easier way.

Start by dividing both sides by 6 to remove the number next to the parentheses.


(The 6 is cancelled out since 6 divided by 6 equals 1, and 1 × any number is that number).
Now you need to leave the variable alone, which can be done by adding 8 to both sides(-8+8=0 and -8 is cancelled out).


Either method can be used, but the second one is definitely shorter!
The answer is x = 20.
Answer: m∠R=30° m∠N=30°
If ΔRST is congruent to ΔNPQ, then we can infer that m∠R is congruent to m∠N
m∠R=-7x+9
m∠N=-10x
If both angles are congruent, we can solve for x...
-7x+9=-10x
add 7x to both sides
9=-3x
divide both sides by -3
-3=x
Now that we know the value of x, we can solve for the measure of the angles.
m∠R=-7x+9
m∠R=-7(-3)+9
m∠R=21+9
m∠R=30°
m∠N=-10x
m∠N=-10(-3)
m∠N=30°
Answer:
m∠2 = 140°
Step-by-step explanation:
m∠1 = m∠3, since they're vertical angles.
Solve for x:

Plug in 6 for x for either m∠1 or m∠3. Doesn't matter since they're equal.
m∠1 = (2(6) + 28)°
m∠1 = (12 + 28)°
m∠1 = 40°
Now that we know m∠1, we can now solve for m∠2.
m∠1 + m∠2 = 180°
40° + m∠2 = 180°
m∠2 = 140°
Answer:
A. 19°
Step-by-step explanation:
To find the average of something, you add every number in the sequence and then divide it by how many numbers there are.
23 + 17 + 26 + 5 + 33 + 11 = 115
115 / 6 = 19.16666666666667
Round it down and your answer will be 19°.