Determine the constant of proportionality, k, and interpret it in the context of each problem. 3) The graph shows the relationsh
ip between the weight of an object on Earth and the weight of the same object on Venus. (Hope you can see the picture well)
2 answers:
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Answer:
y = 4
Step-by-step explanation:
An exponential function in standard form is
y = a
Use ordered pairs from the table to find a and b
Using (0, 4), then
4 = a ( note that
= 1 ), so
a = 4, then
y = 4
Using (1, 8)
8 = 4 = 4b ( divide both sides by 4 )
b = 2
y = 4 ← represents the values in the table
Answer:
a. Class width=4
b.
Class midpoints
46.5
50.5
54.5
58.5
62.5
66.5
70.5
c.
Class boundaries
44.5-48.5
48.5-52.5
52.5-56.5
57.5-60.5
60.5-64.5
64.5-68.5
68.5-72.5
Step-by-step explanation:
There are total 7 classes in the given frequency distribution. By arranging the frequency distribution into the refine form we get,
Class
Interval frequency
45-48 1
49-52 3
53-56 5
57-60 11
61-64 7
65-68 7
69-72 1
a)
Class width is calculated by taking difference of consecutive two upper class limits or two lower class limits.
Class width=49-45=4
b)
The midpoints of each class is calculated by taking average of upper class limit and lower class limit for each class.
Class
Interval Midpoints
45-48
49-52
53-56
57-60
61-64
65-68
69-72
c)
Class boundaries are calculated by subtracting 0.5 from the lower class limit and adding 0.5 to the upper class interval.
Class
Interval Class boundary
45-48 44.5-48.5
49-52 48.5-52.5
53-56 52.5-56.5
57-60 56.5-60.5
61-64 60.5-64.5
65-68 64.5-68.5
69-72 68.5-72.5