Sumita buys a set of earphones for £12.23. She pays with £15.

How much change does she get?

Give your answer in £.

If chord ab is congruent to chord cd, then what must be true about ef and eg?

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1