10. you are given the first four terms of an arithmetic sequence. why might you
use a recursive formula? why might you use an explicit formula? under what
conditions might a recursive formula be preferred over the explicit formula?
under what conditions might an explicit formula be preferred over the
recursive formula?

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

sorry i need the points

step-by-step explanation:

biuuyb i\

uygybg bsyvyuenrs

ufir7gyuuf6

y6fy

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.