Math written response questions, please help :)) ty

Mathematics

1 answer:

notka56 [123]3 years ago

7 0

Question 10:
$ABC=ABD+DBE+EBC \\ 180°=42°+5x+7x+6° \\ 12x=138° \\ x=11° \\ CBD=5x+7x+6=12*11+6=138°$

Question 11:
$WZ=WX+XZ\\ 28=a+1+2(2a+1)\\ 5a+3=28\\ a=5\\ XY=2*5+1=11$

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