Answer:
there is nothing to prove
Step-by-step explanation:
We have 
.
To find inverse function 
we substitute x with and vice-versa to get
Now solve for . Note that I will use 
instead.
So we find that 
.
Hope this helps.
Answer:
The probability the student studies Art and
Biology is 0.2143.
Step-by-step explanation:
Denote the events as follows:
A = a students studies Art
B= a students studies Biology
The information provided is:
N = 42
n (An B) = 9
n (A' n B) = 10
n (A' n B') =7
Then the number of students who study Art
but not Biology is:
n(An B') = N -n (An B) -n (A' nB) - n (A'n B')
= 42 - 10 - 7 - 9
= 16
The number of students who study Art but
not Biology is 16.
Compute the probability the student studies
Art and Biology as follows:
P(ANB)
n(ANB)
= 0.2143
Thus, the probability the student studies Art
and Biology is 0.2143.
Is there a picture of the question?
Answer:
46
Step-by-step explanation:
Divide 69 by 3
69 / 3 = 23
Take it times two.
23 x 2 = 46
Proportion
Cross multiply and solve for x.
