Find the indicated term.27, -9, 3, -1, . . . ; 9th term

A.   
B. - 
C. - 
D.   


Answer: A

Mathematics

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Solve the formula for the indicated variable. Then use the supplied values to solve the equation.The energy W stored by a capacitor is given by W = QV, where V is the voltage across the capacitor's terminals after Q coulombs of electricity have been transferred from one of the capacitor's plates to the other. Solve for Q. How many coulombs have been transferred if W is 0.47 watts and V is 15.8 volts? (All values are approximate.)

A. Q =  = 3.7 coulombs
B. Q =  = 0.059 coulombs
C. Q = 2WV = 15 coulombs
D. Q= W2V = 3.5 coulombs

Mathematics

Express the number in decimal notation.8.1 × 105

A. 81,000 B. 8,100,000 C. 405 D. 810,000

Mathematics

Change the exponential expression to an equivalent expression involving a logarithm.4-2 = 

A. log-2 = 4
B. log4-2 = 
C. log1/164 = -2
D. log4 = -2

Mathematics

Solve the problem.Find the sum of the first 10 terms of the arithmetic sequence 88, 159, 230, . . . .

A. -3635 B. 4075 C. -2315 D. 3635

Mathematics