Express the number in decimal notation.8.1 × 105
A. 81,000
B. 8,100,000
C. 405
D. 810,000
Answer: D
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Parametric equations and a parameter interval for the motion of a particle in the xy-plane are given. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion.x = 3 cos t, y = 3 sin t, ? ? t ? 2?
A. x2 + y2 = 9
Counterclockwise from (3, 0) to (3, 0), one rotation
B. x2 + y2 = 9
Clockwise from (3, 0) to (-3, 0)
C. x2 + y2 = 1
Clockwise from (1, 0) to (1, 0), one rotation
D. x2 + y2 = 9
Counterclockwise from (-3, 0) to (3, 0)
Find the present value. Round to the nearest cent.To get $2000 after 8 years at 4% compounded semiannually
A. $1461.38 B. $1486.03 C. $543.11 D. $1456.89
Tell whether the statement is true or false.{11, 14, 15, 17} ? {14, 15, 18, 19} = {14, 15}
A. True B. False
Solve the problem.According to Ohm's law, the electric current I, in amperes, in a circuit is directly proportional to the voltage V. When 29 volts are applied, the current is 2 amperes. What is the current when 28 volts are applied?
A. 14.5 amperes B. 406 amperes C. 59 amperes D. 1.93 amperes