Solve the problem.The current (in amperes) in an inductor of inductance L (in henries) is given by 
where V is the voltage (in volts) and t is the time (in seconds). Find a formula for i, if 
A. i = 
(2t4 - 8t2) + C
B. i = 
(2t4 - 2t2) + C
C. i = L(2t4 - 8t2) + C
D. i = 
(2t4 - 8t) + C
Answer: A
Mathematics
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Find the coordinates of the vertex of the parabola.x = y2 - 2y + 8
A. (1, 0) B. (7, 1) C. (0, 7) D. (1, 7)
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Solve the problem.An upholsterer wants to reupholster 210 chairs for a banquet hall. If each chair needs 
pound of brass tacks, how many pounds of brass tacks are needed?
A. 3 pounds B. 1470 pounds C. 30 pounds D. 147 pounds
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Determine whether the expression shown is a sum, difference, product, or quotient.149 + 157
A. difference B. sum C. product D. quotient
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Factor the trinomial or state that the trinomial is irreducible.10x2 - 23x + 12
A. irreducible B. (2x + 3)(5x + 4) C. (10x + 3)(x + 4) D. (2x - 3)(5x - 4)
Mathematics