The sum of 7 and 9 is:
7 + 9 = 16
The sum which is 16 is greater than 12. Therefore we add
3 to the sum:
16 + 3 = 19
<span>Therefore the correct answer to this problem is 19.</span>
Answer:
x = 45
Step-by-step explanation:
The angles are supplementary
(2x + 40) + (3x - 85) = 180
Combine like terms
5x - 45 = 180
Add 45 to both sides
5x = 225
Divide both sides by 5
x = 45
Answer:
8x+7
Step-by-step explanation:
Hello,
The 3th angle of the triangle is the supplement of 3x-8:
180-(3x-8)=180-3x+8=188-3x
The sum of all angles of the triangle is 180
180=2x+21+188-3x
==>180=-x+21+188
==>x=21+188-180
==>x=21+8
==>x=29
The correct answer is the last one