A homeowner wants to make an elliptical rug from a 12 -ft by 10 -ft rectangular piece of carpeting. a. What lengths of the major and minor axes would maximize the area of the new rug? b. Write an equation of the ellipse with maximum area. Use a coordinate system with the origin at the center of the rug and horizontal major axis. c. To cut the rectangular piece of carpeting, the homeowner needs to know the location of the foci. Then she will insert tacks at the foci, take a piece of string the length of the major axis, and fasten the ends to the tacks. Drawing the string tight, she'll use a piece of chalk to trace the ellipse. At what coordinates should the tacks be located? Describe the location.
A homeowner wants to make an elliptical rug from a 12 -ft by 10 -ft rectangular piece of carpeting. a. What lengths of the major and minor axes would maximize the area of the new rug? b. Write an equation of the ellipse with maximum area. Use a coordinate system with the origin at the center of the rug and horizontal major axis. c. To cut the rectangular piece of carpeting, the homeowner needs to know the location of the foci. Then she will insert tacks at the foci, take a piece of string the length of the major axis, and fasten the ends to the tacks. Drawing the string tight, she'll use a piece of chalk to trace the ellipse. At what coordinates should the tacks be located? Describe the location.
Solution Summary: The author calculates the major and minor axes that maximize the area of an elliptical rug made from 12-ft rectangular piece of carpeting.
A homeowner wants to make an elliptical rug from a
12
-ft
by
10
-ft
rectangular piece of carpeting.
a. What lengths of the major and minor axes would maximize the area of the new rug?
b. Write an equation of the ellipse with maximum area. Use a coordinate system with the origin at the center of the rug and horizontal major axis.
c. To cut the rectangular piece of carpeting, the homeowner needs to know the location of the foci. Then she will insert tacks at the foci, take a piece of string the length of the major axis, and fasten the ends to the tacks. Drawing the string tight, she'll use a piece of chalk to trace the ellipse. At what coordinates should the tacks be located?
Describe the location.
System that uses coordinates to uniquely determine the position of points. The most common coordinate system is the Cartesian system, where points are given by distance along a horizontal x-axis and vertical y-axis from the origin. A polar coordinate system locates a point by its direction relative to a reference direction and its distance from a given point. In three dimensions, it leads to cylindrical and spherical coordinates.
~
exp(10). A
3. Claim number per policy is modelled by Poisson(A) with A
sample x of N = 100 policies presents an average = 4 claims per policy.
(i) Compute an a priory estimate of numbers of claims per policy.
[2 Marks]
(ii) Determine the posterior distribution of A. Give your argument.
[5 Marks]
(iii) Compute an a posteriori estimate of numbers of claims per policy.
[3 Marks]
2. The size of a claim is modelled by F(a, λ) with a fixed a
a maximum likelihood estimate of A given a sample x with a sample mean
x = 11
=
121. Give
[5 Marks]
Robbie
Bearing Word Problems
Angles
name:
Jocelyn
date: 1/18
8K
2. A Delta airplane and an SouthWest airplane take off from an airport
at the same time. The bearing from the airport to the Delta plane is
23° and the bearing to the SouthWest plane is 152°. Two hours later
the Delta plane is 1,103 miles from the airport and the SouthWest
plane is 1,156 miles from the airport. What is the distance between the
two planes? What is the bearing from the Delta plane to the SouthWest
plane? What is the bearing to the Delta plane from the SouthWest
plane?
Delta
y
SW
Angles
ThreeFourthsMe MATH
2
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