Answer:
Step-by-step explanation:
Given,
Cost Price (CP) = Rs 460
Profit % (P%) = 5%
Now,
Profit Amount (P) = P% * CP
= ( 5/100) * Rs 460
= Rs 460/20 = Rs 23
The answer is 45.
You have to multiply 15% by $3.
When you multiply them you get 45.
E [x] = Expected value of X
μ = average
σ = standard deviation
V (X) = Variance
σ = (V(X)) ^ 0.5
E [X] = X * P (x)
Assuming that the number of books purchased is a discrete random variable with mean μ = E [X]
Then the variance of X can be written as V (X) = E [X-μ]^2
We started finding the average μ
μ = 0 * 0.20 + 1 * 0.30 + 2 * 0.50
μ = 1.3
Once the average is found, we can calculate the value of the variance
V (X) = 0.20 * (0-1.3) ^ 2 + 0.30 * (1-1.3) ^ 2 + 0.50 * (2-1.3) ^ 2
V (X) = 0.61
Now we know that from the variance the standard deviation can be obtained by doing:
σ = (V (X)) ^ 0.5
Finally
σ = 0.781
Answer:
Step-by-step explanation:
y - 8 = -2/3(x + 3)
the solution is the 4th option