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

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Answer: B

Mathematics

Solve the problem.A child on a swing initially swings through an arc length of 12 meters. The child stops pushing and sits patiently waiting for the swing to stop moving. If friction slows the swing so the length of each arc is 80% of the length of the previous arc, how far will the child have traveled before the swing stops?

A. 25 m B. The child will travel an infinite distance. C. 24 m D. 60 m

Combine the complex numbers.(3 + 7i) - (-5 + i)

A. 8 + 6i B. 8 - 6i C. -8 - 6i D. -2 + 8i

Use the commutative and associative properties to simplify the expression.-3(5y)

A. -15 + y B. 2y C. -15y D. 15y

Write the number in scientific notation.0.0000060111

A. 6.0111 × 10-6 B. 6.0111 × 106 C. 6.0111 × 10-7 D. 6.0111 × 10-5