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3x+30=90
3x=90-30=60
x=?

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What's up?

please help

and fast please :)

3x+30=90 that looks good

Just solve for x

Because |dw:1433222505160:dw|

ok ?

Where are you confused?

They must add up to 90 degrees, as a right angle is always 90 degrees.

ok

and then

So we add the two angles 30+3x and make it equal to 90, 3x+30 = 90

Now solve for x to find the angle

i got 40

|dw:1433222874705:dw|

its 30! sorry

Try again :)

Your algebra is correct, but your division is wrong

20!

There we go! I knew you could do it :)

:)

its c.. prettY sure :) @iambatman

Sounds good

okk :)

b?

Are you doing a test?

homework

A unique triangle is one that is not equilateral

So what you mentioned is a equilateral triangle as all angles are the same.

yes

And can only be drawn one way, so something like 3 cm, 5 cm, 7 cm

yea:)

so im right?

b?

Yes, that seems good

:)

Supplementary angles add up to 180, so \[5x+20+50=180\] solve for x

|dw:1433224140932:dw|

Yup

:)

sorry, b is not correct,it is d

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