How many nickels and dimes are in $11.25 if there are four times more dimes than nickels a) 25 nickels and 100 dimes b) 100 nickels and 25 dimes c) 20 nickels and 80 dimes d) 15 nickels and 60 dimes

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?