Jill calculates that the distance between london and manchester, england, is about 280,000 meters. if she drives at a rate of 80 kilometers per hour, how long will it take jill to drive from london to manchester?

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

How can you check that you have correctly converted frequencies to relative frequencies?