Find the quotient.28 ÷ (-4)
A. 8
B. 7
C. -8
D. -7
Answer: D
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For the given slope of line l1, (a) find the slope of line a l2 parallel to l1, and (b) find the slope of a line l3 perpendicular to l1.m = 10
A. (a) 10; (b) - 
B. (a) 10; (b) 
C. (a) -10; (b) 10
D. (a) 
; (b) 10
Determine whether the statement is true or false. If it is true, explain why it is true. If it is false, give an example to show why it is false.
?
If 
and 
, then f must have a critical point at (a, b).
?
A. False. In relative extremum 
and 
.
B. True. It follows from definition.
Evaluate the sum.
A. 35 B. 19 C. 37 D. 70
Solve the problem.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 
-4.0px;" /> of current are flowing through a resistor whose resistance is 
A. 378 watts
B. 252 watts
C. 42 watts
D. 294 watts