You randomly select two marbles from jar that contains 45
black marbles, 15 white marbles and 10 red marbles. What is
the probability that the first marble is white and the second
marble is not red if you do not replace the first marble? Enter
your answer as a decimal rounded to the nearest hundredth.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.