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LiRa [457]
3 years ago
14

What is the measure of

Mathematics
2 answers:
lilavasa [31]3 years ago
3 0

Answer:

30 degrees

Step-by-step explanation:

∠BAC= ∠DAE (vert. opp. ∠s)

(x +10)°= (2x -10)°

x +10= 2x -10

<em>Bring</em><em> </em><em>constants</em><em> </em><em>to</em><em> </em><em>1</em><em> </em><em>side</em><em>,</em><em> </em><em>x</em><em> </em><em>terms</em><em> </em><em>to</em><em> </em><em>the</em><em> </em><em>other</em><em>:</em>

2x -x= 10 +10

x= 20 <em>(</em><em>simplify</em><em>)</em>

∠BAC= (x +10)°

∠BAC= (20 +10)° <em>(</em><em>substitute</em><em> </em><em>x</em><em>=</em><em>2</em><em>0</em><em>)</em>

∠BAC= 30°

Zigmanuir [339]3 years ago
3 0

Answer:

<bac=30°

Step-by-step explanation:

<bac=<ead (being vertically oppoaite angles)

(x+10)=(2x-10)

10+10= 2x-x

20°=x

now

<bac=(x+10)°

<bac=(20+10)°

so,<bac=30°

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