Solve the system by the addition method. Be sure to check all proposed solutions.4x = 13y + 6-2x + 6y = 2

A. {(-31, -10)}
B. {(7, 10)}
C. {(10, )}
D. {(-10, - 3)}


Answer: A

Mathematics

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Solve the problem.A ramp leading to the entrance of a building is inclined upward at an angle of 8°. A suitcase is to be pulled up the ramp by a handle that makes an angle of 34° with the horizontal. How much force must be applied in the direction of the handle so that the component of the force parallel to the ramp is 50 lbs.?

A. 8.573 lbs B. 55.66 lbs C. 44.94 lbs D. 59.72 lbs

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Find  by using the Chain Rule. Express your final answer in w = y2 - x ln y; x = st, y = 

A. s
B. s2
C. s
D. s

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Convert.7.8 meters = ___ centimeters

A. 780 B. 0.078 C. 0.0078 D. 7800

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Write the name of the metric unit of measurement described. of a gram

A. hectogram B. kilogram C. centigram D. milligram

Mathematics