Question

Find the value of x and y

Answer 1

@bibby could you help please?

Answer 2

playin video games give me like 10 minutes

Answer 3

@bibby haha okay

Answer 4

what do you know about trapezoids?

Answer 5

@bibby almost nothing lol

Answer 6

112-90=22
90-22=68
sin (68)=h/(2x+3y)
h=sin(68)*(2x+3y)

Answer 7

@mononoor I dont understand the equation?

Answer 8

cos (3x+11y-90)=h/12
h=12cos(3x+11y-90)
12cos(3x+11y-90)=sin(68)*(2x+3y)

Answer 9

but this way is hard.

Answer 10

could you give me an easy way then lol

Answer 11

couldn't you assume it's isoceles and do 2 equations?

Answer 12

@bibby i was thinking x and y have to be something for 2x+3y to equal 12 and then for 30x+11y to equal 112?

Answer 13

oh
in pic, 2 side is equal?

Answer 14

to be honest, I'm not sure at all

but I assumed so

Answer 15

oh god yeah. it says in the notation that the 2 sides are equal

Answer 16

@bibby so how do i solve this?

Answer 17

since the sides are equal you know that 2x+3y = 12

Answer 18

yes. 2x+3y=12 and 30x+11y=112

Answer 19

yeah and i got x = 6 + 1.5y

Answer 20

x=6-1.5y

Answer 21

sorry thats what i meant!

Answer 22

and now you can replace the variable to get it all in terms of y or x

Answer 23

so 2 (6-1.5y) + 3y = 12?

Answer 24

@bibby

Answer 25

Huh, how rude. He left?

OK x=6-1.5y
thus the other angle = 30(6-1.5y)+11y
you distribute the 30 and get 180-45y+11y = 180-34y

Answer 26

112 = 180-34y
34y = 180-112 (add 34y to both sides and subtract 112 from both)
34y = 68
y = 2 SIGHHHHHHHHHHHHH

Answer 27

@bibby and x = 6??

Answer 28

we can go back to the original x = 6 - 1.5y
1.5y = 1.5(2) = 3
x = 6 - 3 = 3
How'd you get 6?

Answer 29

@bibby x = 3? lol

Answer 30

Yeah. but what's important is the steps to get to the answer and not the answer itself.

How'd you get x=6? Do you get how I got 3?

Answer 31

@bibby yeah I understand how you got 3, you substituted 2 for y in x = 6-1.5(3)
What I did was substitute it for 2x + 3(2)=12

Answer 32

ooh, that's less work than what I did I guess.

always run through your work like 3 times. so much of the dumb stuff I did on tests were careless arithmetic errors like those lol

Answer 33

@bibby hahah I will next time, thank you though! you're the only one that helps me lol I swear you're my math wiz

Answer 34

hahahaa no way. tag me whenever and I'll help where I can but I'm just as unsure about this stuff half the time.

good luck with whatever exams and stuff you have. I'll stop replying now :D