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Mathematics 16 Online
OpenStudy (anonymous):

What values of a and b make quadrilateral MNOP as a parallelogram? Picture will be posted.

OpenStudy (anonymous):

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OpenStudy (anonymous):

A. a= 1, b=5 B. a= 5, b=1 C. a= 11/7, b= 34/7 D. a= 34/7, b= 11/7

OpenStudy (anonymous):

length of mn must be equal to 13 and length of mp must be equal to 21

OpenStudy (anonymous):

so how do i make sure that they are equal?

OpenStudy (anonymous):

do i plug numbers in.. like from the answer choices.. or what/

OpenStudy (anonymous):

3a-2b=13 4a+b=21

OpenStudy (anonymous):

ahh ok

OpenStudy (anonymous):

wait i do them separately right

OpenStudy (anonymous):

so do it as simultaneous equation 3a-2b=13 2*(4a+b=21)

OpenStudy (anonymous):

3a-2b=13 8a+2b=42

OpenStudy (anonymous):

so now add the two equations to find a

OpenStudy (anonymous):

5

OpenStudy (anonymous):

oh the answer is choice B .. but how do you find b

OpenStudy (anonymous):

to find b put 5 in one of the two equations instead of a

OpenStudy (anonymous):

oh nvm i know how

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