drainy0uandthefish
30.08.2020 •
Mathematics
A) write an equation
B) x=
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Ответ:
Answer is in the steps
Step-by-step explanation:
The interior angles of a triangle add up to one 180 degrees so they all have to add up to 180 degrees.
A) (x+10)° + 50° + (x+20)° = 180°
B) Now solve for x using the equation
x+10 + 50 +x+20= 180
2x + 80 = 180
-80 -80
2x = 100
x = 50
Ответ:
x=-5, y=-3
Step-by-step explanation: