Four positions of such a sequence are given to be 3s, and we have 10 choices for the remaining eight positions. So the number of such sequences is

or 100 million.
Since the triangle is a right triangle at point B, then line AB is perpendicular to line BC.
For perpendicular lines, the product of their slopes is -1.
Slope of AB = (5 - 0)/(2 - 5) = 5/-3 = -5/3
Slope of BC = (y - 5)/(7 - 2) = (y - 5)/5
-5/3(y - 5)/5 = -1
-5(y - 5)/15 = -1
-5(y - 5) = -15
y - 5 = 3
y = 3 + 5 = 8
Therefore, the y-coordinate of point C is 8.
so wt's the question of this pic?
Answer:
So, Linear equations is the branch of algebra which deals with equality based equations with the infinite number of variables (highest index of any variable is one.)
Whereas, algebra is the branch of mathematics which deals with the variables, constants and the relationship between them
Step-by-step explanation: