Question

EF is a median of trapezoid ABCD. What is the value of x? (Let me draw the trapezoid first)

Answer 1

this is the trapezoid

Answer 2

I NEED HELP @aum @Ibbutibbu. @TheSaint905621

Answer 3

ok lets see...

Answer 4

wow this is hard

Answer 5

ok so one side has to be less than ten and the other has to be more than ten

Answer 6

there is no other information in the question..?

Answer 7

no

Answer 8

hmm...

Answer 9

i think... OK lets try substituting random numbers for x. lets strart with zero

Answer 10

ok

Answer 11

it cannot be zero because the top line has to be positive.

Answer 12

so lets try one

Answer 13

ok

Answer 14

the only way you can fin the area is to find the height

Answer 15

and with the area you could probably figure out the x value

Answer 16

hmm. @satellite73 , can you help?

Answer 17

yeah and maybe @NaeNaeHoowaahh or @TheSaint905621

Answer 18

the median is always the difference of the two bases

Answer 19

your GOOD

Answer 20

thankyou

Answer 21

I think EF = (AB + DC) / 2

Answer 22

Hey maybe @LearningIsAwesome can help too

Answer 23

I'm sorry I'm really bad a Geometry, I'm good with equations and basic statistics and some polynomials, other than that in the math thing I'm not the best on...

Answer 24

maybe @lxl-rhea-lxl can help

Answer 25

EF = (AB + DC) / 2 = (3x - 1 + 7x + 1) / 2 = (10x) / 2 = 5x
10 = 5x
x = 2

Answer 26

@mathstudent55 can help I think! Love his explanations

Answer 27

hey lets give each other medals

Answer 28

That's against the rules...

Answer 29

oh sry

Answer 30

i had no clue

Answer 31

Sorry, I had to report it.

Answer 32

u know what let's try a new question

Answer 33

its all right :)

Answer 34

Aha! Found a confirmation for my hunch: http://www.regentsprep.org/Regents/math/geometry/GP9/LTrapezoid.htm