Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (anonymous):

#7 Please Find the value of x

OpenStudy (anonymous):

OpenStudy (anonymous):

2x+x+15+90=180 just solve for x

OpenStudy (anonymous):

You really can just say this. \[2x + x + 15 = 90\]Can you solve this @Trexy ?

OpenStudy (anonymous):

37.5? @Calcmathlete

OpenStudy (anonymous):

x=25

OpenStudy (anonymous):

\[2x + x + 15 = 90 \implies 3x + 15 = 90 \implies 3x = 75 \implies x = \frac{75}{3} \implies x = ?\]

OpenStudy (anonymous):

HOW DID YOU GET THAT.. lol.. im really not good at geometry..

OpenStudy (anonymous):

Well thats explain better..

OpenStudy (anonymous):

lol...this is algebra though XD

OpenStudy (anonymous):

no.. this is geometry Cal..

OpenStudy (anonymous):

The overall question is geometry...the solving for x part is algebra...

OpenStudy (anonymous):

OpenStudy (anonymous):

i know i have to add this by 180, but how?

OpenStudy (anonymous):

Ok. There is a theorem that says that isosceles triangles have congruent base angles. Therefore: 2y + 40 = 180 Can you solve?

OpenStudy (anonymous):

70?

OpenStudy (anonymous):

Yup. |dw:1343018042020:dw| Remember, supplementary angles add up to 180. x + 70 = 180

OpenStudy (anonymous):

Can you solve for x here?

OpenStudy (anonymous):

110? so 110 is right answer?

OpenStudy (anonymous):

Yes :)

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

np :)

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!