i think the answer to this problem is49
The answer is D.
f(x) = 3/x
g(x) = 3x
(g * f)(-9) = 3(3/-9)
(g * f)(-9) = 3(-1/3)
(g * f)(-9) = -1
Answer:
Step-by-step explanation:
given that a certain test preparation course is designed to help students improve their scores on the LSAT exam. A mock exam is given at the beginning and end of the course to determine the effectiveness of the course. The following measurements are the net change in 6 students' scores on the exam after completing the course:
We find
Mean 13.66666667 = 13.7
Standard Error 1.801234145
Margin of error for 90% = 1.645*std error = 2.963
Confidence interval = Mean ±Margin of error
=(10.704, 16.630)
Sample mean = 13.7
P = 2l +2w
820 = 2(w - 70) + 2w
<span>820 = 4w - 140 </span>
<span>820 - 140 = 4w</span>
<span>680/4 = w
170 = w
let me know if you need an explanation of how i got any of the steps
:)</span>
