Answer:
6
Step-by-step explanation:
S = Spanish book
M = Math book
H = History book
These are the different ways in which he can organize the book on his bookshelf.
SMH
SHM
MSH
MHS
HSM
HMS
There are 6 ways.
Do you know what n equals so i can solve it?<span />
Answer:
dollars per t-shirt
Step-by-step explanation:
<em>Read the problem and write your equation while following along with it</em>
We have 8 t-shirts
Lets 8 t-shirts be represented by 8t
So for our equation we will place and 
<h3>Our equation:
</h3><h3 />
Now it says we have a coupon that subtracts 4 dollars from our total
<h3>Our equation:
</h3><h3 />
The final part to add to our equation says that our total before tax was 36 dollars
<h3>So here is our equation:
</h3><h3 />
<em>add </em>
<em> to both sides</em>
<em>Divide both sides by</em>
dollars per t-shirt
-Side note, make sure to spell your question right. It was a tad bit confusing to read at the start.
-Brainliest please :)
10x8=80 dollars that day
80+30=$110
Hope this helps!! Have a good day
This question is incomplete, the complete question is;
X and Y are independent Gaussian (Normal) random Variables. X has mean 13.9 and variance 5.2; Y has mean 6.9 and variance 3.8. . (a) Calculate P( W> 10)
Answer:
P( W> 10) is 0.1587
Step-by-step explanation:
Given that;
X ⇒ N( 13.9, 5.2 )
Y ⇒ N( 6.9, 3.8 )
W = X - Y
Therefore
E(W) = E(X) - E(Y)
= 13.9 - 6.9 = 7
Var(W) = Var(X) + Var(Y) -2COV(X.Y)
[ COV(X,Y) = 0 because they are independent]
Var(W) = 5.2 + 3.8 + 0
= 9
Therefore
W ⇒ N( 7, 9 )
so
P( W > 10 )
= 1 - P( W ≤ 10 )
= 1 - P( W-7 /3 ≤ 10-7 /3 )
= 1 - P( Z ≤ 1 ) [ Z = W-7 / 3 ⇒ N(0, 1) ]
from Standard normal distribution table, P( Z ≤ 1 ) = 0.8413
so
1 - P( Z ≤ 1 ) = 1 - 0.8413 = 0.1587
Therefore P( W> 10) is 0.1587
