Answer:
99
Step-by-step explanation:
Geometry is not my best subject but here's what I did:
The sum of the angles in a triangle is 180 so if we add 4 and 8 we can get angle 6
--> 180 - (37+62)
--> 180 - 99
---> 81
The sum of the angles on a line intersected at a point = 180
180 - 81 = Angle 5
Angle 5 = 99
<h2><u>Correct option</u> :</h2>
<h2><u>Steps to derive the correct option</u> :</h2><h3>Given :</h3>
- Lines u and v are parallel
- Measure of an angle = 12x - 4
- Measure of it's corresponding angle = 10x + 10
Since these angles are corresponding angles and lie on two parallel lines, their value will be equal.
Which means :
Thus, the value of x = 7.
Let's place 7 in the place of x and see if their value matches :
Thus, ∠12x - 4 = 80°
Thus, ∠10x + 10 = 80°
Since the value of these two angles are equal, we can conclude that we have found out the correct measure of each angle.
Therefore, the correct option is - <u>(A) 12x - 4 = 10x + 10; x = 7</u>
We can substitute y + 2 for 'x' in the first equation, giving us:
(y + 2) + y = 6
D is equivalent negative times negative is positive and it is just double