A bag contains two red marbles and five blue marbles. you draw a marble, record its color, replace it, and then draw a second marble. what is the probability that you draw a blue marble at least once?

a. 0.28

b. 0.49

c. 0.71

d. 0.92

There are 1,375 students in one elementary school if all elementary schools have the same number of students how many students are in seven schools

Fran has a bag of 20 marbles the bag has some blue, yellow and green she draws one marble at random records the color and returns it to bag her data after 1200 trials is 845 blue 305 green and 50 yellow what it the probability that a random marble

The sides of a rectangle are in the ratio 3:2. what is the length h of each side if the perimeter of the rectangle is 30cm?

EZ car rental charges $40 dollars a day plus $0.25 per mile. Ace Rent-A-Car charges $25 dollars a day plus $0.45 per mile. What number of miles results in the same costs as one day?

An online newspaper had 350,080 visitors in October 350,489 visitors in November and 305,939 visitors in December what is the order of the months from greatest to least number of visitors

What is 400 divided by 10 to the 3rd power

How do you simplify the problem 6 (2x+5) + 2

Is the number 3 prime, composite or neither

Udents a news report says that 9% of middle school stare on the track team. there are 600 students in your middle school. how many students in your school would you expect to be on the track team?

How can you use bar diagrams to compare quantities in real world situations