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The sum of the measures of the interior angles of a triangle is 180. We have measures of 57, 30, and 27. We need to find the missing angle.
180 - (30 + 27 + 57) = 66
Answer:
x = 9
Step-by-step explanation:
60 + 6x + 16 = 13x + 13
6x - 13x = 13 - 16 - 60
- 7x = - 63
- x = - 63/7
- x = - 9
x = 9
Are there any multiple choice answers?
Answer:
As the product of the slop of both lines is -1.
Therefore, the given equations are perpendicular.
Step-by-step explanation:
Given the equations


The slope-intercept form of the equation is

where m is the slope and b is the y-intercept.
Writing both equations in the slope-intercept form


So by comparing with the slope-intercept form we can observe that
slope of equation = 3
i.e.

also



So by comparing with the slope-intercept form we can observe that
the slope of equation = -1/3
i.e.

as
The slope of the perpendicular line is basically the negative reciprocal of the slope of the line.
so
The slope
is the negative reciprocal of the slope 
Also, the product of two perpendicular lines is -1.
i.e.

VERIFICATION:
It is clear that the product of the slop of both lines is -1.


Therefore, the given equations are perpendicular.