Solve the problem.If the resistance in an electrical circuit is held constant, the amount of current flowing through the circuit is directly proportional to the amount of voltage applied to the circuit. When 
are applied to a circuit, 
of current flow through the circuit. Find the new current if the voltage is increased to 
A. 280 mA
B. 266 mA
C. 168 mA
D. 300 mA
Answer: A
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Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Solve.The outline of a certain planet can be considered a circle with a radius of approximately 4000 miles. Thus, if the center of this planet is located at (0, 0), then an equation for this circle is 
. Suppose an incoming meteor is approaching the planet in a hyperbolic path. The equation describing the meteor's path is 
Will the meteor strike the planet? If so, locate the point (x, y) where the meteor will strike. Assume that x and y are both positive, and round to three significant digits.
A. Yes, at the point (x, y) ? (2550, 4000). B. Yes, at the point (x, y) ? (1410, 3740). C. No, the meteor will not strike the planet. D. Yes, at the point (x, y) ? (2280, 4000).
Write the quadratic equation in standard form. Determine the values of a, b, and c.1 - 5x + 3x2 = 0
A. 3x2 - 5x + 1 = 0 a = -3, b = 5, c = -1 B. 0 = -3x2 + 5x - 1 a = 3, b = -5, c = 1 C. 3x2 - 5x + 1 = 0 a = 3, b = -5, c = 1 D. 0 = -3x2 - 5x - 1 a = -3, b = 5, c = -1
Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.(4x5)(2x2)
A. -8x7 B. -8x10 C. 8x10 D. 8x7