exam Maths Puzzle Numerical Ability

Pythagoreans Therom Problem...

34. If the diagonals of a trapezoid have the same length, then the trapezoid is isosceles. Find the lengths of the diagonals of trapezoid ABCD wi

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my problem is that maria drove from providence to new hampshire in 1.5 hours. if the distance is 110 miles how fast was she travleing the answer is 73 mph but i want to know how to graph that ? Factor completely.
49x^2 - 9