Hi I need help with 5 questions..some of it is confusing to me. I just want to make sure my answers are right.

1.6^-7 x 6^4
6^-3 ; 6^-11 ; 6^-28 ; 6^11 - my answer is 6^-3
2. 7/ 7^5 = 7^-2 (supposed to find the missing value which is the other exponent on top of the 7 that's alone). 7; 3; -3; -7 - my answer is -3
3. (2^-5)______ = 2^-15 (there are no answer choices) my answer is 5
4. 5^-6 x 5^2/ 5^-8
5^-20 ; 5^-12 ; 5^4 ; 5^-4 - My answer is 5^-12
5. 8^-5/ (8^-7)^2 = 8 ____ (theres no answer choices, but I was really stuck on this one & I don't have a answer.)
Please Help! Thanks .

  1. 0
  2. 2
asked by Anonymous
  1. #1. correct

    #2. no, you need 7^3/7^5 = 7^-2 , so your choice would be the exponent +3

    #3. 2^-5 = 1/2^5 = 1/32

    5^-6 x 5^2 / 5^-8
    = 5^-4 / 5^-8 = 5^4

    8^-5 / (8^-7)^2
    = 8^-5 / 8^-14
    = 8^9

    mmmh, one correct out of 5, looks like some review of multiplying and dividing powers of the same base is really necessary.

    1. 0
    posted by Reiny

Respond to this Question

First Name

Your Response

Similar Questions

  1. NVQ level 3 buisness admin

    ok im really struggling on the questions on unit 314 hy the hell is there no question marks i have to anwser them like questions,its confusing me?? please can anyone shed a light over my way please.x cheers ema We don't have
  2. math

    how are and 3 4th bours and the distance traveled in 2 3 4th hours represented in the table?how are they shown on the graph? Having read the next four or five posts, I suggest you do two things: 1. Start over and write a complete
  3. 2 questions really urgent

    sorry i have 2 more questions: what happens when a contour line crosses a river: stays flat, bends upstream , stops why do contour lines never cross eachother: they each represent a different elevation, the map would be too
  4. algebra

    2(8+p)=22 these two questions are confusing to me can someone explain them please! 5(a-1)=35
  5. to bobpursley

    My classmates friends want me to post their questions as well.Thats why there are multiple names is there a problem. Yes. You are posting duplicate or even triplicate questions. That is silly. If we have answered one, the answers
  6. Mimi

    post your thinking, or what is confusing to you on your chem/physics questions. I am not much of an answer giver. I do critique well.
  7. chemistry

    How do I do a limiting reactant equation? The questions my teacher gave me are confusing and nothing we ever learned in class.
  8. Pre-Algebra

    What is the process of Scientific Notation? It gets confusing between whole numbers and decimals. (Also, sorry about the tons of questions; been a while since I went on Jishka :P) -MC
  9. Chemistry/ Dr.Bob222

    DrBob222 I am beginning to understand about balancing equations well, thanks to your help, but there are still some other things, which I am having a hard time figuring out. Complete and balance the following chemical reactions
  10. Math

    Evaluate:|12 5 -2| |-3 0 1| |-5 4 2| It's going to be really confusing if I post my work. I got -127 from all the confusing things I did
  11. Calculus

    What is implicit in what would be the steps in solving it. I read my textbook but it seems very confusing. 1) Differentiate both sides with respect to x 2) Realize that y is a function of x 3) Solve for y Plus

More Similar Questions