The ratio north american butterflies in south american butterflies at a butterfly park is 5.3 the ratio of south american butterflies european butterflies is 3.430 north american butterflies at butterfly park how many european butterflies are there

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)