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alejandra1201
04.03.2021 •
Mathematics
Question 1 if you don’t mind. I’m not sure what to x first
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Ответ:
x= 2
y= -3
Step-by-step explanation:
Create a third equation by bringing the x over to right hand side to have y on its own to make solving easier.
4x-y = 11
-y =-4x+11
(divide by -1)
y= 4x-11 (equation 3)
Sub 3 into 1
5x + 2(4x-11) =4
5x + 8x-22 =4
13x=4+22
13x= 26
x= 26/13
x=2
y=4x-11
y= 4(2)-11
y= 8-11
y= -3
Ответ:
60 degrees
Step-by-step explanation:
the area of a triangle is 180 degrees and there are three angles that equal the same. 180/3= 60