Yes indeed it is. Your correct
Y2-y1/x2-x1
8-[-13]/17-17
21/0
this is called undefined because its denominator is zero.
Try this option ↓
Step-by-step explanation:
1) according to the condition two angles are equal, then two sides are equal also, it means
2) √x+4=√(5x+4);
3) the 'x' can be calculated if to solve this equation:
;



4) finally, answer: 9.
N = how many blueberries Nico picked
11n = how many blueberries Kai picked
11n + n = 936
12n = 936
n = 78
11 (78) = 858 blueberries
Nico picked 78 and Kai picked 858