The probability of precipitation in Modesto, California, varies from a peak of 0.34 34 % in January to a low of 0.04 4 % in July. Assume that the percentage of precipitation varies monthly and behaves like a cosine curve. a. Write a function of the form P t = A cos B t − C + D to model the precipitation probability. The value P t is the probability of precipitation (as a decimal), for month t with January as t = 1 . b. Graph the function from part (a) on the interval 0 , 13 and plot the points 1 , 0.34 , 7 , 0.04 , and 13 , 0.34 to check the accuracy of your model.
The probability of precipitation in Modesto, California, varies from a peak of 0.34 34 % in January to a low of 0.04 4 % in July. Assume that the percentage of precipitation varies monthly and behaves like a cosine curve. a. Write a function of the form P t = A cos B t − C + D to model the precipitation probability. The value P t is the probability of precipitation (as a decimal), for month t with January as t = 1 . b. Graph the function from part (a) on the interval 0 , 13 and plot the points 1 , 0.34 , 7 , 0.04 , and 13 , 0.34 to check the accuracy of your model.
The probability of precipitation in Modesto, California, varies from a peak of
0.34
34
%
in January to a low of
0.04
4
%
in July. Assume that the percentage of precipitation varies monthly and behaves like a cosine curve.
a. Write a function of the form
P
t
=
A
cos
B
t
−
C
+
D
to model the precipitation probability. The value
P
t
is the probability of precipitation (as a decimal), for month
t
with January as
t
=
1
.
b. Graph the function from part (a) on the interval
0
,
13
and plot the points
1
,
0.34
,
7
,
0.04
, and
13
,
0.34
to check the accuracy of your model.
Use the information to find and compare Δy and dy. (Round your answers to four decimal places.)
y = x4 + 7 x = −3 Δx = dx = 0.01
Δy =
dy =
4. A car travels in a straight line for one hour. Its velocity, v, in miles per hour at six minute intervals is shown
in the table. For each problem, approximate the distance the car traveled (in miles) using the given method,
on the provided interval, and with the given number of rectangles or trapezoids, n.
Time (min) 0 6 12 18|24|30|36|42|48|54|60
Speed (mph) 0 10 20 40 60 50 40 30 40 40 65
a.) Left Rectangles, [0, 30] n=5
b.) Right Rectangles, [24, 42] n=3
c.) Midpoint Rectangles, [24, 60] n=3
d.) Trapezoids, [0, 24] n=4
The bracket BCD is hinged at C and attached to a control cable at B. Let F₁ = 275 N and F2 = 275 N.
F1
B
a=0.18 m
C
A
0.4 m
-0.4 m-
0.24 m
Determine the reaction at C.
The reaction at C
N Z
F2
D
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