need help!?

Question

A jar contains only nickels, dimes, and quarters. There is at least 1 of each type of coin in the jar. If the total value of the coins ib the jar equals60 cents, how many quarters are in the jar?
A window consists of a rectangular region topped by a semicircular region. What is the area of the glass needed to fill the two regions of the window whose rectangular region measures 2 feet by 3 feet? ( 2 is also the diameter of the circle)
1/3 x 0.32+2/3 x 0.64+4/3 x 0.32 answer as fraction
I flip a coin five times, and got a head each time. What is the probability I will flip a tail on my next flip? Express as fraction
How many positive integers have a value between radical 8 and radical 72?
Two rectangular boxes have the smae volume. One of the boxes has measurements of 8' by 4' by 16'. How long is an edge of the cube?
I am on thefirst floor of a 10story building. Each story is the same hieght.The floors are numbered 1-10. Aclimb to the3rd floor is what fraction ofclimb to 7th floor?

Answer 1

1.) 1 quarter, 3 dimes, 1 nickel

2.) 9.14 sq. feet

3.) approximately 29/50

4.) 1/2 the previous flips have no bearing on the next flip.

5.)

6.) 8' is the cube's edge length.

7.) well, if by first floor, you mean ground floor, then...
1/3