Ask your own question, for FREE!
Mathematics 10 Online
OpenStudy (janu16):

Find the value of x.

OpenStudy (chlobug):

Where's the question?

OpenStudy (chlobug):

The equation, I mean.

OpenStudy (janu16):

There is only a picture

OpenStudy (janu16):

@chlobug

OpenStudy (chlobug):

Can you link it to us? Or draw it using the "Draw" feature at the bottom of the reply box?

OpenStudy (janu16):

Here is the pic

OpenStudy (chlobug):

Thank you.

OpenStudy (chlobug):

Okay cool. So, do you know what degrees every number should add up to?

OpenStudy (janu16):

Umm no

OpenStudy (chlobug):

That's fine! Okay, so before we do anything. We need to find what everything should add up to. To find the degrees of a polygon, you need to use this formula: \[180(n-2)\] The "n" represents the number of sides. How many sides does your polygon have?

OpenStudy (janu16):

5 sides so it would be 5-2 which is 3 and 180•3=540 so it would add up to 540 right?

OpenStudy (chlobug):

Perfection!

OpenStudy (chlobug):

Now we can plug in each set to equal that.

OpenStudy (chlobug):

What is your new equation?

OpenStudy (janu16):

Alright

OpenStudy (janu16):

2x+10+114+2x+112+x=540. Is this correct? Im not sure

OpenStudy (chlobug):

One moment while I do it myself and check. :D

OpenStudy (chlobug):

|dw:1425763879344:dw|

OpenStudy (chlobug):

Did you remember that the little square resembles a 90 degree angle?

OpenStudy (janu16):

Ohh ya

OpenStudy (chlobug):

(: That's a tricky one to remember. So now let's plug in.

OpenStudy (chlobug):

What is your new equation? Let's start by adding the x's together. 4x + 10 + 148 + 90 + 112 = 540

OpenStudy (janu16):

Do you just add 90 to the equation

OpenStudy (irishboy123):

you shouldn't be using equations for this stuff. you should be doing it from basic principles.

OpenStudy (chlobug):

Yes (: Let's keep adding, one number at a time. 4x + 158 + 90 + 112 = 540 Okay, next one. 4x + 248 + 112 = 540 4x + 360 = 540 Where do we go from here?

OpenStudy (janu16):

You just subtract 360 from 540 which is 180 and divide 180 from 4 which would be 45 and the final answer is 45 right?

OpenStudy (chlobug):

Nice work! :D

OpenStudy (janu16):

Omg thanks!! I will give you a medal

OpenStudy (chlobug):

Thank you (: I'm sorry it was such a long process; you did amazing!

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!