Multiply.(13x + 7)(13x - 7)
A. 169x2 - 182x - 49
B. 169x2 - 49
C. 169x2 + 182x - 49
D. x2 - 49
Answer: B
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Find the standard score for the given data value.A data value in the 31st percentile.
A. z = 0.5 B. z = 61.79 C. z = -0.5 D. z = -1.9
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. 225 watts
B. 45 watts
C. 270 watts
D. 405 watts
Simplify the complex fraction.
A. -6x + 13
B. 
C. 6x - 13
D. 7x + 12
Solve the system by graphing.x - y = 4x + y = 4
A. (0, - 4) B. (- 4, 0) C. (0, 4) D. (4, 0)