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Mathematics 7 Online
OpenStudy (anonymous):

PLEASE HELP http://www.usatestprep.com/modules/gallery/files/73/7362/7362.jpg In parallelogram ABCD, find m∠A. A)15° B)70° C)110° D)200°

OpenStudy (anonymous):

can you see the answers?

OpenStudy (anonymous):

is this a test?

OpenStudy (anonymous):

its a practice one, why?

OpenStudy (anonymous):

we cant help with tsts

OpenStudy (anonymous):

i have the real one tomorow ;(

OpenStudy (misty1212):

HI!!

OpenStudy (misty1212):

your only job is to solve \[6x+20+4x+10=180\]

OpenStudy (misty1212):

that should not be too hard once you have \(x\) put it back in \(6x+20\) to find \(A\)

OpenStudy (anonymous):

oh ok

OpenStudy (misty1212):

@mathstudent55 whatever that means

OpenStudy (mathstudent55):

Consecutive interior angles of a parallelogram are same side interior angles of two parallel lines cut by a transversal and are supplementary.

OpenStudy (anonymous):

im still a little lost to be honest. does any1 know the answer?

OpenStudy (mathstudent55):

The two two angles given are supplementary. That means their measures add to 180 degrees.

OpenStudy (mathstudent55):

Add the measures and set equal to 180. 6x + 20 + 4x + 10 = 180 Now solve the above equation for x.

OpenStudy (anonymous):

oh ok so set them to add to = to 180

OpenStudy (mathstudent55):

Right. Can you solve the equation?

OpenStudy (anonymous):

let me see ill put it into my calculator

OpenStudy (anonymous):

ok thanks i got x=15 and plugged it in to get 110

OpenStudy (mathstudent55):

Correct.

OpenStudy (anonymous):

um can u help me with another one please?

OpenStudy (anonymous):

ill make another question so i can come back and see it

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