The number of bacteria present in a culture after t minutes is given as B - 1000 ex where k is a constant. If there are 8520
bacteria present after 15 minutes, find k and round to the nearest thousandth

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

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.)

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels