8th Grade pre Algebra : HELP!

I usually don't post questions on here but Hell, I mind as well go for it. I was sick and now I'm behind, confused, and failing so any help is much appreciated.

3. Which number is equal to 5^3?
A. 15
B. 100
C. 125
D. 150

4. What is the squaee root of 25/64
A. 5/8
B. 12/32
C. The square root of 5/8
D. -5/8

5. Find the length of the hypotenuse of a right triangle. The length of one leg is 9 ft. Find the length of the other leg.
A. 11 ft
B. 18 ft
C. 20 ft
D. 28 ft

6. The length of the hypotenuse of a right triangle is 15 ft. The lengrh of one leg is 9 ft. Fond the length of the other leg.

9. Which of these non terminating decimals can be converted into a rational number?
A. 0.626226222...
B. 0.020220222...
C. 0.123123123...
D. 0.898998999...

13. Write a translation rule that maps point D (7,-3) onto point D'(2,5)

14. Triangle ABC jas coordinates A (1,4); B (3,-2); and C (4,2). Fund the coordinates of the image A'B'C after a reflection over the Y axis

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  1. On question 14 I actually meant to type reflection over the x axis not the y axis

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  2. First try yourself. Post what you did.
    The first couple I am sure you can do.
    like what is 5 * 5 * 5
    and what is
    the square root of
    (5*5) /(8*8)

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  3. Question 5 I do not understand - typo?

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  4. 3.
    5 * 5 * 5 = ?

    4.
    http://www.google.com/#q=square+root+25%2F64+

    5. ?

    6.
    a^2 + b^2 = c^2
    9^2 + b^2 = 15^2

    9.
    http://www.mathsisfun.com/rational-numbers.html

    13 and 14 -- I don't know.

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    Ms. Sue
  5. question 9
    Do you know how to convert a REPEATING non-terminating decimal into a quotient of whole numbers.

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  6. 0.123123123...

    123/10^3 + 123/10^6 + 123 /10^9 .....

    = (123/1000)(1 + 10^3 + 10^3*10^3 + 10*3*10*1*10^3 ......

    = (123/1000) (a + ar + 1 r^2 .....
    a = 1
    r = 1/1000

    is infinite geometric series
    sum = 1/(1-r)
    so
    =(123/1000)(1/(1-1/1000)

    = 123/1000 (1/999/1000)
    =123/999
    try
    123/999 on your calculator

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