# Math

posted by .

There are 5 staircases going from thr first to the second floor in school. Find the total number of ways that Andrea can go from the first floor to the second and then return to the first.

Thank you

## Similar Questions

1. ### Physics

The main water line enters a house on the first floor. The line has a gauge pressure of 1.70 105 Pa. (a) A faucet on the second floor, 6.5 m above the first floor, is turned off. What is the gauge pressure at this faucet?
2. ### Calculus

A ball is dropped from a height of 10 feet and bounces. Each bounce is ¨ú of the height of the bounce before. Thus, after the ball hits the floor for the first time, the ball rises to a height of 10(¨ú ) = 7.5 feet, and after it …
3. ### math word problem

The Main Hall on the college campus has four main levels, from the basement up to the third floor. The technology staff in the basement occasionally needs to see the President, who is on the first floor, and the Dean who is on the …
4. ### Probabilities ~~

1.) a computer package sale comes with two different choices of printers and four different choices of monitors. if a store wants to display each package combination that is for sale, how many packages must be displayed?
5. ### math

There are a total of 50 houses with two floor plans. use x to repre4sent floor plan 1 and y to represent flor plan 2 write an equation. The second floor plan has 4 times as many homes than the firs pla. Write an equation to illustrate …
6. ### physics

Water is circulating through a closed system of pipes in a two- floor apartment. On the first floor, the water has a gauge pressure of 3.4*10^5 Pa and a speed of 2.1 m/s. However, on the second floor, which is 4.0 m higher, the speed …
7. ### Math

A high rise apartment building has four elevators. Each elevator travels upward at an average rate of 18 feet per second. The elevator travels 12 feet from one floor to the next. Suppose you get on the elevator on the first floor and …
8. ### physics

A worker has to move a rock with mass 50 kg on a stairway from the first floor to the second floor of a house. The second floor is 4.6 m above the first floor and the stairway has 18 steps. The rock is lifted from step to step. How …
9. ### math

A 40 foot long escalator rises from the first floor to the second of a shopping mall. The escalator makes a 30 degree angle with the horizontal. How high above the first floor is the second floor?
10. ### Math

A man standing on a window of the first floor of a building observed that the angle of depression of forest in which is 10 metre from the photo of the building is 45° claims to the window of the second floor directory above the first …

More Similar Questions