Solve the system using a graphing calculator capable of performing row operations. Give solutions with values correct to the nearest thousandth.0.6x + 4.9y - 
z = 7
x - 18y + 10z = -13x + 
y - 4.9z = 
A. {(2.084, -1.741, 3.529)}
B. {(3.431, 1.930, 2.606)}
C. {(-7.733, -5.025, 3.491)}
D. {(8.110, 0.749, 2.619)}
Answer: B
Mathematics
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t2, y = 
(4t + 4) 3/2, 0 ? t ? 1
A. 5
B. 3
C. 
D. 
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Use a calculator to give the value to the nearest degree.? = sin-1(0.8830)
A. 62° B. 118° C. 60° D. 57°
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Solve.The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for 12 hours and uses 240 gallons of fuel. Find the number of gallons of fuel that the helicopter uses to fly for 5 hours.
A. 4 gallons B. 100 gallons C. 576 gallons D. 120 gallons
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Solve the equation.
?
?
A. x = 3 B. x = -5 C. x = -2 D. x = 1 E. x = -4
Mathematics