Answer:
Cost per pound: $3.53
Pounds per dollar: 0.28
Step-by-step explanation:
The cost per pound is simply the total cost divided by the amount of pounds you got for the total cost. To get the price per pound, you divide $1 by the cost per pound, $3.53, to get the amount of pounds you get per dollar.
Answer:
1.39
Step-by-step explanation:
Creating a table:
X :___0 __ 1 __ 2 ___ 3 ____ 4 ___ 5 ___ 6
P(x):0.02_0.03_0.07, 0.12, 0.30_ 0.28_0.18.
The standard deviation = sqrt(Var(x))
Var(x) = Σx²*p(x) - E(x)²
E(x) = ΣX*p(x)
E(x) = (0*0.02) + (1*0.03) + (2*0.07) + (3*0.12) + (4*0.30) + (5*0.28) + (6*0.18) = 4.21
Var(X) :
((0^2*0.02) + (1^2*0.03) + (2^2*0.07) + (3^2*0.12) + (4^2*0.30) + (5^2*0.28) + (6^2*0.18)) - 4.21^2
19.67 - 17.7241
= 1.9459
Standard deviation = sqrt(Var(X))
Standard deviation = sqrt(1.9459)
Standard deviation = 1.3949551
= 1.39
A venue for lost when choosing between two options (2)
I just did this on edge
Answer:
<u>29</u> $1 bills and <u>14</u> $5 bills.
Step-by-step explanation:
Let 
be the number of $1 bills and 
be the number of $5 bills. With the information given, we can set up two equations:
1) 
2) 
There are two ways to solve it; with elimination or substitution. In this explanation, I will solve it with elimination.
To solve it with elimination, multiply the first equation by 5 to get:
Then, you can subtract the equation we just got by the second equation to get:
Thus, 
. To find y, just substitute x for 29 in the first equation to get:
. Therefore, 
. That means that there are 29 $1 bills and 14 $5 bills. You can check by substituting those values for x and y in either of the first two equations.
Hope this helps :)
