A parallelogram should have 2 sets of parallel lines. Let's find the slope of line PQ and RS to test.
PQ:
(4-2)/(1-(-3))
2/4
1/2
RS:
(2-0)/(3-1)
2/2
1
Because 1 does not equal 1/2 (the slopes are different) the lines are not parallel. Thus, the figure is not a parallelogram.
You use PEMDAS. Start by distributing the terms in the parentheses. The isolate the variables. To do that you subtract x from one side of the equation to the other side. You always do the other operation. If it is adding you subtract, if your multiplying your dividing and the other way around. Then you subtract 10 from each side. This equation has many solution because all the terms cancel out.
Answer:
m∠N = 32°
NQ = 106°
When finding inscribed angles like ∠N with the intercepted arc, the equation is ∠N=1/2MP. (Inscribed angles are always half the degree of the arc length.) Plug in the corresponding value to get ∠N=1/2(64) to get 32°. When finding the angle of the intercepted arc with inscribed angles like NQ, the equation is NQ=2(∠P). Plug in the corresponding value to get 2(53) to get 106°.
Answer:
14 students
Step-by-step explanation:
Given
Let:
read a book
watched TV
So, we have:
-- total
![b = 16](https://tex.z-dn.net/?f=b%20%3D%2016)
![t = 41](https://tex.z-dn.net/?f=t%20%3D%2041)
![none = 7](https://tex.z-dn.net/?f=none%20%3D%207)
Required
Students that did both (x)
This is calculated using:
![Total = Books\ only + TV\ only + Both + None](https://tex.z-dn.net/?f=Total%20%3D%20Books%5C%20only%20%2B%20TV%5C%20only%20%2B%20Both%20%2B%20None)
So, we have:
![n = (b - x) + (t - x) + x + none](https://tex.z-dn.net/?f=n%20%3D%20%28b%20-%20x%29%20%2B%20%28t%20-%20x%29%20%2B%20x%20%2B%20none)
This gives:
![50 = (16 - x) + (41 - x) + x + 7](https://tex.z-dn.net/?f=50%20%3D%20%2816%20-%20x%29%20%2B%20%2841%20-%20x%29%20%2B%20x%20%2B%207)
Open brackets
![50 = 16 - x + 41 - x + x + 7](https://tex.z-dn.net/?f=50%20%3D%2016%20-%20x%20%2B%2041%20-%20x%20%2B%20x%20%2B%207)
![50 = 16 - x + 41 +7](https://tex.z-dn.net/?f=50%20%3D%2016%20-%20x%20%2B%2041%20%2B7)
Collect like terms
![x = 16 - 50 + 41 +7](https://tex.z-dn.net/?f=x%20%3D%2016%20-%2050%20%2B%2041%20%2B7)
![x = 14](https://tex.z-dn.net/?f=x%20%3D%2014)
<em>Hence, 14 students did both</em>