I really hope this helps you!
Answer:
The answer is 19.
Step-by-step explanation:
Given that these lines are parallel, these two angles together equal 180.
6x +4 + 4x -14 = 180
-4 +14 +10
6x + 4x = 190
10x = 190
x = 19
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I’m assuming what you’re asking here is how to *factor* this expression. For that, let’s rearrange the expression into a more familiar form:
-c^2-4c+21
From here, we’ll factor out a -1 so that we have:
-(c^2+4c-21)
Let’s focus on the quadratic expression inside the parentheses. To find our factors (c + x)(c + y), we’ll need to find two terms x and y that multiply together to make -21 and add together to make 4. It turns out that the numbers -3 and 7 work out perfectly for that purpose (-3 x 7 = -21 and 7 + (-3) = 4), so substituting them in for x and y, we have:
(c + (-3))(c + 7)
(c - 3)(c + 7)
And adding back on the negative from a few steps earlier:
-(c - 3)(c + 7)
The answer is B. If you go through each point and move your finger side to side for the x and without moving your finger up or down for the y.
