-5 +- sq rt of 21/2
Quadratic formula
A= 1 b= 5 c= 1
-b +- sq rt b^2-4ac /2a
-5 +- sq rt 25-4(1)(1) /2
Answer:
B. a (n) = -3n + 13
Step-by-step explanation:
Given arithmetic sequence is: 10, 7, 4, 1, -2, ...
Here a = 10, d = 7 - 10 = - 3

No, line graphs are used only to show change over time
I think it would be $81 I’m not positive tho
Answer:
15 it's in the equation
Step-by-step explanation:
11x-2x=9x 9x-9x=0
7+8=15