Solve the inequality. Graph the solution set, and state the solution set in interval notation.|x| ? 2
A. (-?, -2] ? [2, ?)
B. [2, ?)
C. (-?, -2) ? (2, ?)
D. [-2, 2]
Answer: A
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.2x - 4y + 6z = -7 and -6x - 3y + 4z = -3
A. 0.608 rad B. 1.502 rad C. 0.423 rad D. 1.148 rad
Find the product and write the answer in simplest form. Assume variables represent nonnegative values.
? 
A. 
B. 
C. 
D. 
Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.
A. 2x24
B. 2x4
C. 
D. 
Solve the problem.Electrical systems are governed by Ohm's law, which states that 
, where 
, 
, and 
. If the current in an electrical system is decreasing at a rate of 
while the voltage remains constant at 12 V, at what rate is
the resistance increasing when the current is 56 A?
A. 
ohms/s
B. 
ohms/s
C. 
ohms/s
D. 
ohms/s