Answer:
M=77
Step-by-step explanation:
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Given:
The equation is:

It cuts the x-axis and y- axis at the point A and B respectively.
The area of ∆AOB =12 sq.units.
To find:
The value of <em>k</em>.
Solution:
We have,

Substituting
to find the y-intercept.




Substituting
to find the x-intercept.



Area of a triangle is:

The height of the ∆AOB is
because distance cannot be negative and the base of the ∆AOB is
. So, the area of the ∆AOB is:


It is given that, the area of ∆AOB = 12 sq.units.




Therefore, the value of k is either 24 or -24.
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Given :
▪︎Measure of ∠R = 90°
▪︎Segment OR = Segment RN
Which will mean, ∠O = ∠N.
Thus :







Which means :
Measure of ∠O = 45°
Measure of ∠N = 45°
Therefore, the measures of these angles in ascending order = 45,45,90.