Use the associative law of multiplication to write an equivalent expression.8[x(y + z)]
A. 8[x(z + y)]
B. (8x)(y + z)
C. 8[(y + z)x]
D. 8xyz
Answer: B
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Solve.The voltage across a resistor is jointly proportional to the resistance of the resistor and the current flowing through the resistor. If the voltage across a resistor is 
for a resistor whose resistance is 
and when the current flowing through the resistor is 
find the voltage across a resistor whose resistance is 
and when the
current flowing through the resistor is 
A. 32 volts
B. 35 volts
C. 28 volts
D. 20 volts
Write the complex number in rectangular form.4(cos 300° + i sin 300°)
A. 2
- 2i
B. -2
- 2i
C. -2 + 2
i
D. 2 - 2
i
The rectangular coordinates of a point are given. Express the point in polar coordinates with 
and 
(3, 3)
A. (3, 90°)
B. (3
, 135°)
C. (3, 45°)
D. (3
, 45°)
A polynomial P(x) and a divisor d(x) are given. Use long division to find the quotient Q(x) and the remainder R(x) when P(x) is divided by d(x), and express P(x) in the form d(x)? Q(x) + R(x).P(x) = 2x4 - x3 - 15x2 + 3xd(x) = x + 3
A. (x + 3)(2x3 - 5x2 + 3) + 9 B. (x + 3)(2x3 - 7x2 + 6x - 15) + 45 C. (x + 3)(2x3 - 7x2 + 6x - 15) - 45 D. (x + 3)(2x3 + 5x2 + 3) + 9