How many hours in a week is this person’s biorhythm level greater than or equal to 4.545

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

If there are 3.281 feet in 1 meter, how many inches are in one centimeter