Answer:
0.32472
Step-by-step explanation:
Maple tree diameters in a forest area are normally distributed with mean 10 inches and standard deviation 2.2 inches. Find the proportion of trees having a diameter less than 9 inches.
The formula for calculating a z-score is z = (x-μ)/σ
where x is the raw score
μ is the population mean
σ is the population standard deviation
z = (9 - 10)/2.2
z = -1/2.2
= -0.45455
Probability value from Z-Table:
P(x ≤ 9) = P(x < 9)
= 0.32472
Therefore, the proportion of trees having a diameter less than 9 inches is
0.32472
Formula
2*(L + W) = L * W
Given
W = 3
Solution
2*(L + 3) = 3*L
2L+ 6 = 3L Subtract 2L from both sides
2L - 2L + 6 = 3L - 2L combine
6 = L
Answer: The length is 6 units long.
The profit function is P(x) = 110x - 3300 if the revenue function for a certain product is given by R(x) =450x, while the cost function for this product is given by C(x) = 340x + 3300.
<h3>What is a function?</h3>
It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have,
The revenue function:
R(x) = 450x
Cost function:
C(x) = 340x + 3300
We know, the profit function is given by:
P(x) = R(x) - C(x)
P(x) = 450x - (340x + 3300)
P(x) = 110x - 3300
Thus, the profit function is P(x) = 110x - 3300 if the revenue function for a certain product is given by R(x) =450x, while the cost function for this product is given by C(x) = 340x + 3300.
Learn more about the function here:
brainly.com/question/5245372
#SPJ1
Answer:
D
Step-by-step explanation:
D
