Perform the indicated operation.160.5 + 0.89 + 34.15 + 61.8
A. 257.44
B. 257.34
C. 258.34
D. 257.35
Answer: B
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Solve.An open-top rectangular box has a square base and it will hold 256 cubic centimeters (cc). Each side of the base has length x cm. The box's surface area S is given byS(x) = 
+ x2.
Estimate the minimum surface area and the value of x that will yield it.
A. 192 cm2 when x = 8 cm B. 256 cm2 when x = 6 cm C. 207 cm2 when x = 6 cm D. 256 cm2 when x = 8 cm
Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Solve the system of equations using matrices. Use Gauss-Jordan elimination. x + y - z + w = -5 3x - y + 3z - 2w = 7-2x + 2y + z - w =16 -x - 2y - 3z + 3w = -22
A. {(-2, 3, 4, -2)}
B. {(
, - 
, - 
, - 
)}
C. {(2, -3, -4, -2)}
D. {(-2, -3, 5, 
)}
Determine the accuracy of the measurement; that is, give the number of significant digits for the measurement.1,444,000 lb
A. 7 B. 4 C. 2 D. 3 E. 6