Santos flipped a coin 300 times. the coin landed heads up 125 times. find the ratio of heads to total number of coin flips. express as a simplified ratio.

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way