The life expectancy of a lightbulb is normally distributed with a mean of 1975 hours and a standard deviation of 25 hours what is the probability that a lightbulb last between 1 950 and 2050 hours

What is 50devided by 50 but take away 43

One student begins in Cleveland, Ohio, and walks towards Buffalo, New York, a distance of 200 miles. She walks at the rate of 2.5 miles per hour.

What are the factors of the polynomial: x^3+5x^2-17x-21

A department store has 39 cartons of new shirts to unpack and display. Each carton contains 25 shirts. Each display rack holds 19 shirts. how many racks will the store need to hold all the shirts?

An animal shelter has $2500 in its reserve fund. the shelter charges $40 per animal placement and would like to have a least $4000 in its reserve fund. if the shelter places 30 cats and 10 dogs, will that be enough to meet its goal?

Joan spend half of her paycheck going to the movies. She washed the family car and earned 7 dollars. What is her weekly paycheck if she ended up with 18 dollars?

Which of these sets of numbers contain all rational numbers? A. π, 1/2, - 13 B. - 3.0541 ...,√99, 0.14363 C. - 6, - √225, 4 7/8 D. √21, 0.75, 0

A paint store mixed 4 3/4 cans of paint and 7 2/3 cans of white paint did this mixture make?

One number is 2 more than another. The difference between their squares is 20. What are the numbers?

M + 5/6 = 11/12 What is m? s - 1/9 = 5/18 What is s?