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Mathematics 17 Online
OpenStudy (anonymous):

Given that FC is the median of trapezoid GBDE, find the value of the median. Select one: a. 19 b. 21 c. 27 d. 42

OpenStudy (anonymous):

OpenStudy (anonymous):

27+15/2=21 nikki. you should know this :)

OpenStudy (anonymous):

What about this one? Find the value of x: Select one: a. 10 b. 12 c. 24 d. 36

OpenStudy (anonymous):

i'm afraid it must be 4.

OpenStudy (anonymous):

so none of these are correct?

OpenStudy (anonymous):

@marsss

OpenStudy (anonymous):

i think so

OpenStudy (anonymous):

hmmm

OpenStudy (anonymous):

how did you get 4? @marsss

OpenStudy (anonymous):

i think the median is 21. but what you calculated was x, which is kind of redundant

OpenStudy (anonymous):

21=4x+5 16=4x x=4

OpenStudy (anonymous):

the median is 21

OpenStudy (anonymous):

because the median is given by 4x+5. but you didn't need to calculate x to know what the median was.

OpenStudy (anonymous):

get me?

OpenStudy (anonymous):

do you know what x is @chris00

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

yes x=4, but you don't need to solve for it to 'find the value of the median' which is the problem statement.

OpenStudy (anonymous):

the median is already defined as \[median=\frac{ GB+ED }{ 2 }\]

OpenStudy (anonymous):

um okay

OpenStudy (anonymous):

perhaps there is a follow on question which makes you solve for x.

OpenStudy (anonymous):

but here, x is clearly not the median. 4x+5 is the median

OpenStudy (anonymous):

so the median is b)21

OpenStudy (anonymous):

get me?

OpenStudy (anonymous):

yes but i posted another question Find the value of x: Select one: a. 10 b. 12 c. 24 d. 36

OpenStudy (anonymous):

is there a different trapezoid for this problem?

OpenStudy (anonymous):

no its the same one

OpenStudy (anonymous):

hmm perhaps take a picture of the entire picture. Because, yes x=4

OpenStudy (anonymous):

if it is actually the same question, then perhaps email your teacher about it with a print screen of the question.

OpenStudy (anonymous):

OpenStudy (anonymous):

that is a different question...

OpenStudy (anonymous):

its wants to solve for x Find the value of x: Select one: a. 10 b. 12 c. 24 d. 36

OpenStudy (anonymous):

i messed up sorry

OpenStudy (anonymous):

i can't see what the words say at the top of the page

OpenStudy (anonymous):

in the question

OpenStudy (anonymous):

12/(12+x)=5/15 they are proportional triangles, because the bases are parallel can you solve it?

OpenStudy (anonymous):

you could have just found the ratio of the first small triangle 12/5. and then multiply that my 10 to get x. 12/5 *10=24

OpenStudy (anonymous):

different ways to get the same answer.

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