Find the rate as a ratio of distance to time. Round to the nearest hundredth where appropriate.21 km, 3 hr
A. 21 
B. 7 
C. 21 
D. 7 
Answer: B
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Solve.The power that a resistor must dissipate is jointly proportional to the square of the current flowing through the resistor and the resistance of the resistor. If a resistor needs to dissipate 
of power when 
of current is flowing through the resistor whose resistance is 
find the power that a resistor needs to dissipate when 
of current are
flowing through a resistor whose resistance is 
A. 32 watts
B. 16 watts
C. 40 watts
D. 8 watts
Perform the indicated operation.(-70) ÷ (-7)
A. 
B. 0
C. -10
D. 10
Is the following correspondence a function??
A. Yes B. No
Estimate the indicated component or components of the vector. Round to an appropriate number of significant digits.
= 99.5, ? = 284°; Find the horizontal and vertical components of v.
A. horizontal = 24.1, vertical = -96.5 B. horizontal = 96.5, vertical = 24.1 C. horizontal = -96.5, vertical = 24.1 D. horizontal = 24.1, vertical = 96.5