Answer:
(200π - 12)ft
or
616.32 ft
Step-by-step explanation:
Given in the question,
there are four circle around which corn will be planted.
radius of first circle = 10 ft
radius of second circle = 20 ft
radius of third circle = 30 ft
radius of fourth circle = 40ft
circumference = 2πr
First circle
2π(10)-3
20π -3
Second circle
2π(20)-3
40π-3
Third circle
2π(30)-3
60π-3
Fourth circle
2π(40)-3
80π-3
Add them up
80π - 3 + 60π - 3 + 40π - 3 + 20π - 3
(200π - 12)ft
or
616.32 ft
Answer:
The answer is below
Step-by-step explanation:
Given that mean (μ) = 266 days, standard deviation (σ) = 16 days, sample size (n) = 16 women.
a) The mean of the sampling distribution of Xbar (
) is given as:
![\mu_x=\mu=266\ days](https://tex.z-dn.net/?f=%5Cmu_x%3D%5Cmu%3D266%5C%20days)
The standard deviation of the sampling distribution of Xbar (
) is given as:
![\sigma_x=\frac{\sigma}{\sqrt{n} } =\frac{16}{\sqrt{16} }=4](https://tex.z-dn.net/?f=%5Csigma_x%3D%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%20%7D%20%3D%5Cfrac%7B16%7D%7B%5Csqrt%7B16%7D%20%7D%3D4)
b) The z score is a measure in statistics used to determine by how much the raw score is above or below the mean. It is given by:
![z=\frac{x-\mu}{\sigma/\sqrt{n} }](https://tex.z-dn.net/?f=z%3D%5Cfrac%7Bx-%5Cmu%7D%7B%5Csigma%2F%5Csqrt%7Bn%7D%20%7D)
For x > 270 days:
![z=\frac{x-\mu}{\sigma/\sqrt{n} }=\frac{270-266}{\frac{16}{\sqrt{4} } }=1](https://tex.z-dn.net/?f=z%3D%5Cfrac%7Bx-%5Cmu%7D%7B%5Csigma%2F%5Csqrt%7Bn%7D%20%7D%3D%5Cfrac%7B270-266%7D%7B%5Cfrac%7B16%7D%7B%5Csqrt%7B4%7D%20%7D%20%7D%3D1)
The probability the average pregnancy length exceed 270 days = P(x > 270) = P(z > 1) = 1 - P(z < 1) = 1 - 0.8413 = 0.1587 = 15.87%
Answer:
b-5
Step-by-step explanation:
because you are using the coupon which means to subtract since you are saving $ 5 from b dollars
Answer:
Square
Step-by-step explanation:
Take a look at the attachment below. We need to apply the distance formula to derive the distance between points (0, 3), (3, 0), (0, - 3), (-3, 0). We can right away note that the sides of the quadrilateral created from these points are congruent. How so?
Again, taking a look at the attachment, you will see that this quadrilateral is named. Take side AB as an example. It forms a right triangle with the x and y - intercepts, the legs of lengths 3 and 3 units. AB is the hypotenuse. Respectively sides BC, CD, and AD each are the hypotenuse of their own mini triangle with legs of 3 units each! From this we can conclude that, by Pythagorean Theorem, AB = √18 = BC = CD = AD.
All sides are congruent, so the shape must be a square!
5x + 7
5x represents the weight of the 5 striped fish.
7 represents the fish that weighs 7 pounds.