Answer:
Triangle: 120
Quadrilateral: 90
Pentagon: 72
Octagon: 45
Decagon: 36
30-gon: 10
50-gon: 7.2
100-gon: 3.6
Step-by-step explanation:
360/n = the measure on the exterior angle
n = the number of sides
Answer:
the location of Y is 9.5
Step-by-step explanation:
-7+26 = 19
19/2 = 9.5
Answer:
Is yellow
Step-by-step explanation:
an open circle for "less than" or "greater than", and a closed circle for "less than or equal to"
Answer:

Step-by-step explanation:
1) if the point A has coordinates (-1;10) and the point B - (5;2), then it is possible to write common view of the required equation of the line:

2) if to substitute the coordinates of A&B into the common equation, then:

3) finally, in slope-intersection form:
3y= -4x+26; ⇔ y= -4/3 x +26/3.
P.S. the suggested way of the solution is not the only one.