Two car washers Lydia and Jackie are working on your car. Lydia takes 2 hours while Jackie takes 1 if they both work together how many hours do the car washers take if they work together? 1/2, 3/2, 2/3, 4/3.

What is $1.12 for 8.2oz

A magician shuffles a standard deck of playing cards and allows an audience member to pull out a card, look at it, and replace it in the deck. Three additional people do the same.

Which value of y will make the inequality y<-1 false

A researcher conducts a study and finds that the outcome measure is normally distributed with a mean of 57, a median of 56, and a standard deviation of 6. Approximately 95% of the sample falls between which two values?

Angela weighs 15% less than she did one year ago. Which of the statements below is true? Angela's current weight is 15% of her weight one year ago. Angela's weight one year ago is 85% of her current weight.

What is the sum of the complex number 2+3i and 4+8i, where i=√-1?

Find the missing angle

At Brian's Bookstore, 0.3 of the shelves hold mysteries, 25% of the shelves hold travel books, and 7/20 of the shelves hold children's books. Which type of book covers the most shelf space in the store? Explain how you arrived at your answer.

What in math what does it mean when I'd a sample process is in control or not?

What is five and one fifths minus one and three fourths