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Use the echelon method to solve the following system of two equations in two unknowns. Check your answer.
4 x - 3 y=-1
-8 x + 6 y=2
Select the correct choice below? and, if? necessary, fill in the answer box to your choice.
A.The solution is?
?( an ordered? pair.)
B.There are infinitely many solutions. The solution is ( _,y )where y is any real number.
C.There is no solution
Presume we wish to curve a physics test using a linear function. If we want to scale the scores upwards we may decide to raise the lowest score of 47 to 65 and the highest score of 78 to 90. Find a linear equation that converts the other test scores.
three identical masses of 580 kg each are placed on the x axis. one mass is at x -100 cm one is at the origin and one
The telescope at Yerkes Observatory in Wisconsin has an objective whose focal length is 19.4 m. Its eyepiece has a focal length of 10.0 cm. What is the angular magnification of the telescope
A ship sets out to sail to a point 196 km due north. An unexpected storm blows theship to a point 114 km due eastof its starting point. How far must it now sail to reach itsoriginal destination?
A thin, uniform stick of length 3.8 m and mass 3 kg is pinned through one end and is free to rotate. The stick is initially hanging vertically and at rest. What is the magnitude of the angular acceleration of the stick
what is the rate of heat loss through a glass window 3.0 mm thick if the outside temperature is -20o c and the inside
You are given a 12.0 V battery, and four resistors with the following values: 100.0, 30.0,20.0, 10.0. You also have plenty of wire that has essentially zero resistance.
What is the total force on the bottom of a swimming pool 29.5m by 9.1m whose uniform depth is 1.6m, What is the absolute pressure on the bottom of a swimming pool
a young hockey player stands at rest on the ice holding a 1.3-kg helmet. the player tosses the helmet with a speed of
A 18 kilo-ohm resistor is in series with a 75-mH inductor and an ac source. Evaluate what the impedance of the circuit if the source frequency is 70 Hertz. Evaluate what the impedance of the circuit
To preserve flow detail digital Doppler sampling intervals for vascular color flow image must be at intervals of?
An iron vat is 18 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure
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