anonymous
  • anonymous
Find the value of x.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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saifoo.khan
  • saifoo.khan
Do u know the total interior angle of a pentagon?>
anonymous
  • anonymous
Not really:/

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saifoo.khan
  • saifoo.khan
Ok, so it's necessary that u know the total interior angle of the pentagon. So the first step is to find it. Use the formula \[{180(n-2)}\]Where n is the number of sides.
saifoo.khan
  • saifoo.khan
So, u have 5 sided figure. so what will be the value of "n" be?
anonymous
  • anonymous
Erm, I have no idea and I don't wanna guess.
precal
  • precal
Seems like they also, don't want to do any math?????
anonymous
  • anonymous
More like don't understand it.
precal
  • precal
How many sides is your figure? that is your n value, sub it into the formula he gave you and that will tell you how many degrees your figure is made up of
anonymous
  • anonymous
Ohhh thanks!:)
anonymous
  • anonymous
So n is 5, correct?
precal
  • precal
yes
precal
  • precal
add up all of your interior angles and set it equal to that number and solve for x
anonymous
  • anonymous
So substituted 180(n-2) is 180(5-2) which is 180(3) then 540?
precal
  • precal
yes set it equal to 540
anonymous
  • anonymous
So what does the formula look like now and what's my next step?
precal
  • precal
all up all the given interior angles here is a hint the little box represents a right angle and that is 90 degrees 90 + 112 + ..........finish=540 solve for x
anonymous
  • anonymous
Is it 90x or 112x?
precal
  • precal
really????
precal
  • precal
Name all of the angles (Hint: Look at the picture you posted) Start with 90 degrees
anonymous
  • anonymous
Is it 67.5 or 68?
precal
  • precal
what equation did you use? I am still waiting for you to tell me all of the angles listed on your picture.
anonymous
  • anonymous
Angles are 148,112, 2x+10 and 2x right? I'm so bad at this.
precal
  • precal
but you forgot 90 degrees that is what the little box means
precal
  • precal
90 + 112 + 148+ 2x+10+2x=540 solve for x
anonymous
  • anonymous
Ah yes, 90! Forgot that!
precal
  • precal
ok solve for x
anonymous
  • anonymous
x=13.5 ish
anonymous
  • anonymous
Can you help me with one mor question?!
precal
  • precal
there is no ish in mathematics 90 + 112 + 148 + 2x+10+ 2x=540 360 + 4x=540 -360 -360 4x=180 divide both sides by 4 x=45
precal
  • precal
well post it, if I can help I will
anonymous
  • anonymous
Give the name that best describes the parallelogram and find the measures of the numbered angles.
anonymous
  • anonymous
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anonymous
  • anonymous
Ahh, I added the formula wrong.
precal
  • precal
ok angles 1, 3 are the same value angles 2, 4 are the same value by the alternate interior angles triangles equal up to 180 degrees 180-116=64 degrees
precal
  • precal
2 and 3 add up to 64 degrees
precal
  • precal
Triangle is an isoceles and those angles are equal ie 2 and 3 are equal so what do you think the answer is
anonymous
  • anonymous
64
precal
  • precal
angle 2 and 3 are the same value they both add up to 64
anonymous
  • anonymous
then 128
anonymous
  • anonymous
oh wait lol, 32
precal
  • precal
I was beginning to worry yes 32
anonymous
  • anonymous
Yay! Thank you so much!:)
precal
  • precal
Anytime :)

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