Perform the indicated operation. Simplify the result, if possible.
- 
A. - 
B. - 
C. 
D. 
Answer: C
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Evaluate. If necessary, find common denominators and simplify completely.4
+ 12
A. 15
B. 16
C. 17
D. 4
Provide an appropriate response.Find the area of a square whose sides measure 4 ft. Use the formula A= s2.
What will be an ideal response?
Solve the equation by completing the square.x2 - 4x - 7 = 0
A. {-2 - 
, -2 + 
}
B. {4 - 
, 4 + 
}
C. {2 - 
, 2 + 
}
D. {2 - 
, 2 + 
}
Solve the problem.Suppose that a household appliance draws a current represented by the relation src="https://sciemce.com/media/4/ppg__jhjhj0506192304__f1q61g5.jpg" alt="" style="vertical-align: -4.0px;" /> where a, k, and d are constants.
where t is time measured in seconds. The power consumed by the appliance is 
where R is a constant. Take R to be 16 and graph the power in 
by 
and use an identity to write the expression for the power in the form
A. P = 392 cos(120?t) + 392
[0, 0.04, 0.01] by [-200, 2000, 200]
B. P = 392 cos(240?t) + 392
[0, 0.04, 0.01] by [-200, 2000, 200]
C. P = 784 cos(240?t) + 784
[0, 0.04, 0.01] by [-200, 2000, 200]
D. P = -392 cos(240?t) + 392
[0, 0.04, 0.01] by [-200, 2000, 200]