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Mathematics 13 Online
joshiscool:

Help4!

joshiscool:

http://prntscr.com/e3n19s

joshiscool:

@celticcat

joshiscool:

Thanks for all your help

Bob:

Doesn't it all have to add up to 180 ?

celticcat:

yw

joshiscool:

Yea

sox2:

its 23 degrees

joshiscool:

is this correct?

sox2:

yeah 95 +62 = 157 180 - 157 = 23. Basic math

joshiscool:

http://prntscr.com/e3n4et

celticcat:

x = 34 so <S = 34 + 4 = 38 and < T = 3(34) + 9 = 102 + 9 = 111 31 + 38 + 111 = 180

joshiscool:

http://prntscr.com/e3n6jf

joshiscool:

@celticcat

sox2:

this is where I wish you good luck and I leave

celticcat:

6x - 1 + x + 14 + 20 = 180 7x = 147 now you can find what x is then plug this value into x + 14 and 6x -1 to find m angles A and C

joshiscool:

im not sure what your saying

joshiscool:

is there a direct answer @celticcat

celticcat:

to solve 7x = 147 you divide 147 by 7 147/7 = what?

joshiscool:

=21

celticcat:

I'd like to guide you to the answer rather than give direct answers

Bob:

Josh, you're not supposed to look for direct answers.

joshiscool:

it equals 21

celticcat:

right good now you pleg in x = 21 into (6x - 1) to find m< A m<A = 6*21 - 1

celticcat:

if youre not confident to do this manually use your calculator

joshiscool:

A= 125

celticcat:

yep and finally m<C = x + 14 = 21 + 14

celticcat:

- that one's easy

joshiscool:

125 and 35

celticcat:

right and to finally check the answers we could add the 3 angles to see if they come to 180:- 125 + 135 + 20 = 160 + 20 = 180 So we are sure we have right answers

celticcat:

yes correct

joshiscool:

so im correct with 125 and 35

celticcat:

yes and you can double check if they are right the 3 angles of triangle add up to 180 so 20 + 124 + 35 should equal 180 - and they do

celticcat:

* + 125

joshiscool:

Okay Thanks

celticcat:

yw

joshiscool:

I got a 80% Thanks

joshiscool:

:D

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