Tom took a trip of 1,300 miles. he traveled by train at 50 miles an hour and the same number of hours by plane at 275 mph. how many hours did the trip take? 3 hours 4 hours 8 hours

Solve for x by completing the square. 2x^2-4x+7=0

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

The system of equations graphed below has how many solutions? y = 2x + 2