University of Chicago Angle of Elevation Questions

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Q1
Seven samples were obtained having the values 21, 22, 26, 29, 27, 26 and 24. The mean and standard
deviation values are ____________?
Q2
A 72 ohm coil of wire is connected in series with an adjustable resistor (rheostat) whose resistance can
be varied from 0 to 88 ohms. If the line potential of wire is 115 volts, what is the rheostat resistance
when power taken by the coil is 90 watts?
Q3
equation of the line graphed in the xy-plane
Requirements
If a > 0 and b > 0, which of the following could be an equation of the line graphed in the xy-
plane above?
•
A.
y = -ax – b
•
B.
y = ax – b
•
C.
y = ax + b
•
D.
y = -ax + b
•
E.
y = abx
Explain your answer.
Q4
Q5

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Explanation & Answer:
5 Questions

Tags:
mathematics

angle of elevation

principle of trigonometry

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