Answer:
I THINK its 60
Step-by-step explanation:
13. 0.0000000228
14. 1 over 15
15. one-third
16. point three repeating
17. 2two and five eighths
18. -0.59
19. 2.25
20.
21. -0.25
22. 0.6
23. 3
24. 4 and 4 over 9
Answer:
a = - 1.1
Step-by-step explanation:
The condition for a single variable function f(x) to be decreasing is f'(x) < 0.
f(x) = 4/x^2 - 6x + 9
Then, differentiating with respect to x on both sides we get,
f(x) = 4(-2)(1/x^3) - 6 < 0
-8/x^3 - 6 < 0
8/x^3 + 6 > 0
{Dividing both sides with - 1 and hence the inequality sign changes}
8/x^3 > -6
8 > - 6x³ {Multiplying both sides with x³}
6x³ > - 8 {Interchanging the sides}
x^3 > -8/6
⇒ x > - 1.1
So, a = - 1.1
