Samantha, cleo, and elena had $780 altogether. samantha had $40 more than cleo, and cleo had twice as much money as elena. how much money did cleo have?

What fraction of one year is 8 months

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²