For the following exercises, consider the production of gold during the California gold rush (1848-1888). The production of gold can be modeled by G ( t ) = ( 25 t ) ( t 2 + 16 ) , where t is the number of years since the rush began ( 0 ≤ t ≤ 40 ) and G is ounces of gold produced (in millions). A summary of the data is shown in the following figure. 143. Find when the minimum (local and global) gold production occurred. What was the amount of gold produced during this minimum?
For the following exercises, consider the production of gold during the California gold rush (1848-1888). The production of gold can be modeled by G ( t ) = ( 25 t ) ( t 2 + 16 ) , where t is the number of years since the rush began ( 0 ≤ t ≤ 40 ) and G is ounces of gold produced (in millions). A summary of the data is shown in the following figure. 143. Find when the minimum (local and global) gold production occurred. What was the amount of gold produced during this minimum?
For the following exercises, consider the production of gold during the California gold rush (1848-1888). The production of gold can be modeled by
G
(
t
)
=
(
25
t
)
(
t
2
+
16
)
, where t is the number of years since the rush began
(
0
≤
t
≤
40
)
and G is ounces of gold produced (in millions). A summary of the data is shown in the following figure.
143. Find when the minimum (local and global) gold production occurred. What was the amount of gold produced during this minimum?
Find the bisector of the angle <ABC in the Poincaré plane, where A=(0,5), B=(0,3) and C=(2,\sqrt{21})
The masses measured on a population of 100 animals were grouped in the
following table, after being recorded to the nearest gram
Mass
89 90-109 110-129 130-149 150-169 170-189 > 190
Frequency 3
7 34
43
10
2
1
You are given that the sample mean of the data is 131.5 and the sample
standard deviation is 20.0. Test the hypothesis that the distribution of masses
follows a normal distribution at the 5% significance level.
Let l=2L\sqrt{5} and P=(1,2) in the Poincaré plane. Find the uniqe line l' through P such that l' is orthogonal to l
University Calculus: Early Transcendentals (4th Edition)
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