It will be 69 degrees.
(x-1)+x+43=180
2x+42=180
2x=138
x=69
Answer:
2a +2b +4
Step-by-step explanation:
The perimeter is the sum of the lengths of the three sides. If x represents the length of the third side, then ...
(3a +8) +(5a +b) +x = (10a +3b +12)
Subtracting from the equation everything on the left side that is not x, we get ...
x = (10a +3b +12) -(3a +8) -(5a +b)
= a(10 -3 -5) +b(3 -1) +(12 -8)
= 2a +2b +4
The length of the third side is 2a +2b +4.
Answer:
Step-by-step explanation:
See the attached picture for explanation.
Answer:
The supplement of 65° is the angle that when added to 65° forms a straight angle (180°).
Step-by-step explanation:
Hope I <u><em>Helped!</em></u> :D
