Revenue, cost, and profit. The total cost and the total revenue (in dollars) for the production and sale of x hair dryers are given, respectively, by C ( x ) = 5 x + 2 , 340 and R ( x ) = 40 x − 0.1 x 2 0 ≤ x ≤ 400 (A) Find the value of x where the graph of R ( x ) has a horizontal tangent line. (B) Find the profit function P ( x ). (C) Find the value of x where the graph of P ( x ) has a horizontal tangent line. (D) Graph C ( x ), R ( x ), and P ( x ) on the same coordinate system for 0 ≤ x ≤ 400. Find the break-even points. Find the x intercepts of the graph of P ( x ).
Revenue, cost, and profit. The total cost and the total revenue (in dollars) for the production and sale of x hair dryers are given, respectively, by C ( x ) = 5 x + 2 , 340 and R ( x ) = 40 x − 0.1 x 2 0 ≤ x ≤ 400 (A) Find the value of x where the graph of R ( x ) has a horizontal tangent line. (B) Find the profit function P ( x ). (C) Find the value of x where the graph of P ( x ) has a horizontal tangent line. (D) Graph C ( x ), R ( x ), and P ( x ) on the same coordinate system for 0 ≤ x ≤ 400. Find the break-even points. Find the x intercepts of the graph of P ( x ).
Solution Summary: The author explains how the graph of R(x) has a horizontal tangent line at x=200.
Revenue, cost, and profit. The total cost and the total revenue (in dollars) for the production and sale of x hair dryers are given, respectively, by
C
(
x
)
=
5
x
+
2
,
340
and
R
(
x
)
=
40
x
−
0.1
x
2
0
≤
x
≤
400
(A) Find the value of x where the graph of R(x) has a horizontal tangent line.
(B) Find the profit function P(x).
(C) Find the value of x where the graph of P(x) has a horizontal tangent line.
(D) Graph C(x), R(x), and P(x) on the same coordinate system for 0 ≤ x ≤ 400. Find the break-even points. Find the x intercepts of the graph of P(x).
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.
iid
B1 Suppose X1, ..., Xn
fx(x), where
2
fx(x) = x exp(−x²/0),
0<< (0 otherwise).
(a) Find the maximum likelihood estimator of 0.
(b) Show that the MLE is an unbiased estimator of 0.
(c) Find the MSE of the MLE.
Hint: For parts (b) and (c), you may use integration by parts.
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
Chapter 2 Solutions
MyLab Math with Pearson eText - Stand Alone Access Card - for Calculus for Business, Economics, Life Sciences & Social Sciences, Brief Version (14th Edition)
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