What is 3 5/14 as an improper fraction

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

What is not true about kl and mn? what is mn? (show your work)