If Jackie were to paint her living room alone, it would Take eight hours. Her sister Evelyn could do the job in nine hours. How many hours would it take them working together? Express your answer as a fraction reduced to the lowest terms if needed

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4? r^2. write your answer in scientific notation.

When you dilate a figure with a scale factor of 1/2, what will the dilated figure look like?                                                                                           a: the dilated figure will have side lengths that are half the length of the original side lengths.                                                                          b: the angles in the dilated figure will be half the measure of the original figure.                                                                                c: the dilated figure will have side lengths twice the length of the original.