Proportional relationship
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The solution to the system of equations are (-1.7, 3.1) and (4.1, 5.8)
<h3>How to solve the system of equation?</h3>The equations are given as:
Next, we plot the graph of the equations (see attachment)
From the attached graph, we can see that both equations intersect at (-1.7, 3.1) and (4.1, 5.8)
Hence, the solution to the system of equations are (-1.7, 3.1) and (4.1, 5.8)
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It is given in the question that a mile equals 1.609 km and the moon is 2,160 miles in diameter.
One mile is equal to 1.609 km. Therefore 2160 mile equals to
THerefore 2160 mile equal to 3475.44 km and hence the diameter of the moon is 3475.44km .