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Mathematics 7 Online
OpenStudy (eboogie4):

How do u find the value of x in an equation?

OpenStudy (s4sensitiveandshy):

Depends.....

OpenStudy (toastforbreakfast):

send equation lol...

OpenStudy (eboogie4):

Find the value of x in the diagram below. http://media.education2020.com/EVresources/2004-02-01-03-00_files/i0200000.jpg A. 35 B. 55 C. 70 D. 80

OpenStudy (s4sensitiveandshy):

equation like this \[x+2=3\] OR \[\sin x =\frac{5}{3}\] or like this

OpenStudy (s4sensitiveandshy):

|dw:1461365561891:dw|

jhonyy9 (jhonyy9):

so you know that the angles sum of a quadrilateral has a sum of 360 degree - yes ?

OpenStudy (eboogie4):

in a hunch yes

jhonyy9 (jhonyy9):

so what can you writing using this knowladge and using this angles ?

jhonyy9 (jhonyy9):

2(x+40) +2x = 360

OpenStudy (s4sensitiveandshy):

|dw:1461365650780:dw| two angles on the same leg(Adjacent angles) are equal to 180

OpenStudy (eboogie4):

do I do (x+40) and put 360 in place of x?

jhonyy9 (jhonyy9):

so from this just you need calculi the value of x

jhonyy9 (jhonyy9):

no there is an equation with unknowladge of x

OpenStudy (eboogie4):

wait is there a one by the X?

jhonyy9 (jhonyy9):

2(x+40)+2x=360 2x+80 +2x=360 4x=280 x=70

OpenStudy (s4sensitiveandshy):

|dw:1461365840112:dw| in the diagram A = x+40 and B = x add them and set it equal to 180

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