Question

Can someone check to make sure that I am doing this type of problem correctly, please?
Thanks! ^.^

Answer 1

Find the value of x.
(I got x=18)

Hold on while I draw the diagram.

Answer 2

in a trapezium,

Answer 3

(a+c)/2 = b

Answer 4

similar shapes

Answer 5

ONLY IF

Answer 6

solve for x 7+x/2

Answer 7

\[\frac{ 7 }{ 11 } = \frac{ 11 }{ x }\]

Answer 8

7+x/2=11 :)

Answer 9

Remember it only works if it is the midpoint

Answer 10

the two are not necessarily similar @DanJS

Answer 11

It is the median.
I know that the median is the average of the other numbers..
BUT.. I'm not really getting how to find the other side with the information I have.

Answer 12

which line is the median a,b, or c

Answer 13

"b" is the median.

Answer 14

i would say they are implying that it is the middle as i have drawn above

Answer 15

the wording is a little off for Australian standards

Answer 16

i would go for
11x2 = 7+?
therefore ? = 15

Answer 17

Okay, but that's the part I don't get..
I understand the 11x + 2 part, but not the 7 + ? part..
Algebraically speaking, how do I solve this step-by-step?

Answer 18

i meant a+c/2 = b

Answer 19

therefore (7+x)/2 = 11

Answer 20

thus 7+x = 22, meaning x = 15

Answer 21

I think I understand it now. ^.^

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Answer 22

no worries