Solve the system by elimination.
A. 
B. 
C. 
D. 
Answer: C
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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= W2V = 3.5 coulombs
D. Q = 2WV = 15 coulombs
Find the length of the unknown side of the right triangle.The lengths of the legs are 15 meters and 
A. 37 m B. 39 m C. 33 m D. 27 m
Solve the equation using the quadratic formula.(3x - 2)(x + 1) = 0
A. 
, -1
B. 
, 1
C. 
, 0
D. 
, -1
Solve the system of equations.- 
x + 4y - 2z = -243x - 
y + z = 21 x - 3y + 4z = 28
A. (6, -4, 4) B. (6, -6, 3) C. (4, -6, 4) D. (4, -4, 3)