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Marina CMI [18]
3 years ago
14

If two angles of a quadrilateral are 70 and 110 what are the other 2

Mathematics
1 answer:
OverLord2011 [107]3 years ago
8 0
70+110=180
360-180=180
180/2=90
the other 2 angles are both 90.
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</span>\left \{ {{3x + y = 9 } \atop {y = -4x + 10 }} \right.

Pass the incognito "4x" to the first term, changing the signal when changing sides.
<span>-------------------------
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</span>\left \{ {{- 3x = - 9} \atop {4x = 10}} \right.<span>

-----------
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</span></span><span>Substitute in equation (I) to find the value of "Y".

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\boxed{\boxed{ \left \ {{x=1} \atop {y=6}} \right. }}

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