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Mathematics 20 Online
OpenStudy (anonymous):

If l is parallel to m in this figure, find x. line l = 3x+50 line m = 2x-20

OpenStudy (anonymous):

@BillRosie

OpenStudy (anonymous):

OpenStudy (zepp):

Okay, forget about the question and concentration on my questions alright? :)

OpenStudy (zepp):

Okay so first we have that: |dw:1341024318614:dw|

OpenStudy (zepp):

|dw:1341024365551:dw| What can you say about these two angles?

OpenStudy (anonymous):

they r congruent?

OpenStudy (jiteshmeghwal9):

i think if we sum both of these angles.we get \[(3x+50)(2x-20)=180\]

OpenStudy (jiteshmeghwal9):

Sorry, by adding

OpenStudy (zepp):

Wonderful :| All those explanations were gone after yesterday's crash >.> :( but yeah, what I wanted to explain is if angle 2+5=180 Therefore \((3x+50)+(2x−20)=180\) Solve for x and replace x in the respective angles to find their value.

OpenStudy (anonymous):

so is 180 the answer??

OpenStudy (jiteshmeghwal9):

Yeah!!

OpenStudy (zepp):

No... \( (3x+50)+(2x−20)=180\\5x+30=180\\5x=180-30\\5x=150\\x=150\div5=30\)

OpenStudy (zepp):

The angle (2x−20) would be (2(30)-20)=40 The angle (3x+50) would be (3(30)+50)=140

OpenStudy (jiteshmeghwal9):

Oh, yeah @zepp is right.

OpenStudy (zepp):

I've already posted the last step before the answer: ========= Therefore (3x+50)+(2x−20)=180 Solve for x and replace x in the respective angles to find their value. ========= It's quite deceiving that you didn't even read that carefully, you have eyes, use them.

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