Is there a picture ? For this problem
Given that
, it has PDF
and thus CDF
The 25th percentile is the value
such that
. We have
Answer:
1. 14.5
2. 16
Step-by-step explanation:
1. a^2 + b^2 =c^2
20^2 + 21^2 = c^2
400 + 441 = c^2
841 = c^2
=
29 = c
29/2 = x
14.5 =x
2. c^2-b^2 = a^2
34^2 - 30^2 = a^2
1156 - 900 = a^2
256 = a^2
=
16 = a
First you multiply 1/2 with 2 and 1 with n^2+3n
After doing so you got n^2+3n/2n^2
Factor n^2+3n but keep 2n^2still
n(n+3)/2n^2.
Finally Simply n
You got
n+3/2n