Answer:
80°
Step-by-step explanation:
The sum of the two angles (red and blue) is 145°, so you have ...
(4x +5)° +(6x -10)° = 145°
10x = 150 . . . . . . . . divide by °, add 5, simplify
x = 15 . . . . . . . . . . . divide by 10
Then the measure of the angle of interest is ...
m∠XMN = (6x -10)° = (6·15 -10)° = 80°
The slope intercept form y=2x^2-x-13. Hope this helps :)
The total number of dancers in the school is 150.
ANSWER:
-78-a
= -78-(-29)
= -78+29
= -49
