[T] The depth (in feet) of water at a dock changes with the rise and fall of tides. It is modeled by the function D ( x ) = 5 sin ( π 6 t − 7 π 6 ) + 8 , where t is the number of hours after midnight. Determine the first time after midnight when the depth is 11.75 ft.
[T] The depth (in feet) of water at a dock changes with the rise and fall of tides. It is modeled by the function D ( x ) = 5 sin ( π 6 t − 7 π 6 ) + 8 , where t is the number of hours after midnight. Determine the first time after midnight when the depth is 11.75 ft.
[T] The depth (in feet) of water at a dock changes with the rise and fall of tides. It is modeled by the function
D
(
x
)
=
5
sin
(
π
6
t
−
7
π
6
)
+
8
, where t is the number of hours after midnight. Determine the first time after midnight when the depth is 11.75 ft.
Question 4 Find an equation of
(a) The plane through the point (2, 0, 1) and perpendicular to the line x =
y=2-t, z=3+4t.
3t,
(b) The plane through the point (3, −2, 8) and parallel to the plane z = x+y.
(c) The plane that contains the line x = 1+t, y = 2 − t, z = 4 - 3t and is
parallel to the plane 5x + 2y + z = 1.
(d) The plane that passes through the point (1,2,3) and contains the line
x = 3t, y = 1+t, and z = 2-t.
(e) The plane that contains the lines L₁: x = 1 + t, y = 1 − t, z = 2t and
L2 : x = 2 − s, y = s, z = 2.
Please find all values of x.
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 65 weekly reports showed a sample mean of 19.5 customer contacts per week. The sample standard deviation was 5.2. Provide 90% and 95% confidence intervals for the population mean number of weekly customer contacts for the sales personnel.
90% Confidence interval, to 2 decimals:
( , )
95% Confidence interval, to 2 decimals:
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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