This one is a tough one. If you can explain it to me that’ll me great. A. 78 B.84 C.73 D.79

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luckyhussien65

Middle School

This one is a tough one. If you can explain it to me that’ll me great.
A. 78
B.84
C.73
D.79

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(Based on todays review)

freckledspots

Answer:
C. 73 if I have read the given angle measurements correctly.
The angle measurements I see are:
$219^\circ$
$(x-50)^\circ$
$(x+45)^\circ$ .
Step-by-step explanation:
Those angles together form a full rotation. A full rotation is equal to 360 degrees.
So we have the following equation to solve:
$219+(x-50)+(x+45)=360$
Combine like terms:
$(x+x)+(219-50+45)=360$
Simplify:
$2x+(219-5)=360$
$2x+214=360$
Divide both sides be 2:
$x+107=180$
Subtract 107 on both sides:
$x=180-107$
$x=73$
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Yang100

Answer:
C) 73
Step-by-step explanation:
360-219=141
(x-50)+(x+45)=141
2x-50+45=141
2x-5=141
2x=141+5
2x=146
x=146/2
x=73
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