The rang is negative infinity to positive infinity is
Answer:
= 3x - 3y
Step-by-step explanation:
24 min is how long it should take
Answer:
Part A:

x is a binomial Random Variable.
Part B:
Value of p=0.8
Value of n=20
Part C:
P(X=15)=0.17456
Part D:
P(X≥15)=0.80417
Part E:
E(x)=16
E(x) tells us that out of 20 tracks the SBIRS will detect from 16 tracks.
Step-by-step explanation:
Part A:
Binomial Distribution is used because the number of tracks and the probability to find the intruding object is constant for all tracks
It means:

x is a binomial Random Variable.
Part B:
Value of p=0.8
Value of n=20
Part C:
x=15

By solving above Expression:
P(X=15)=0.17456
Part D:
P(X≥15)=P(X=15)+P(X=17)+P(X=16)+P(X=18)+P(X=19)+P(X=20)

P(X=15)=0.17456



Now, Adding Probabilities:

P(X≥15)=0.80417
Part E:
Mean Distribution:
E(x)=n*p
E(x)=20*0.8
E(x)=16
E(x) tells us that out of 20 tracks the SBIRS will detect from 16 tracks.
Answer: 17 1/6 or 17-18
(u guess which is right if its an integer ^^)
Step-by-step explanation:
25 3/4 ÷ 1 1/2
First change the mixed fractions to improper fractions.
<u>25 3/4 </u>= <u>103/4</u>
<u>1 1/2 </u>= <u>3/2</u>
Now divide: 103/4 ÷ 3/2
103/4 * 2/3 (multiply by flipping the second fraction)
= 206/12
Now divide: 206 ÷ 12
= 17 2/12 (<u>simplified:</u> 17 1/6)
<u><em>The answer will be 17 1/6 </em></u> (OR 17-18)