Post a New Question

Algebra-Please check my calculations

posted by .

Could you please check my answers and help with the ones I can't figure out-
1. Solution to the radical function sqrt(1/2x+1) = 1 is x = 0
True or False I think it is true according to my calculations

2.Solve x = sqrt(8x)
8x = x^2
x^2 - 8x = 0
x(x-8) = 0
x = 0
x-8 =0
x=8
the only solution is x = 0, correct or nobecause x = 8 doesn't work-
3. Simply (3x^2y^-2)^-2/9x^-5y
a.xy^3
b. xy^3/3
xy^3/9
d. xy^3/81

I think it is xy^3/81 but I'm not sure of my calculations

4. Solve 4sqrt(6x-2)>4
a. 1/3<=x<43
b. 1/3<x<43
x>=43
x>43
I think x>43
Thank you

  • Algebra-Please check my calculations -

    1. true if the equation is
    sqrt((1/2)x+1) = 1, or
    sqrt(x/2+1) = 1

    2. x=√(8x)
    "the only solution is x = 0, correct or nobecause x = 8 doesn't work- " ???
    x=0 works: 0=√(8*0)
    x=8 also works √(8*8)=8

    3. Correct.

    4. Solve 4sqrt(6x-2)>4
    Divide by 4 to get
    sqrt(6x-2)>1
    For this to happen, 6x-2>1 or x>(1/2)
    which does not match any of your answers.
    I suspect there is a misprint or misinterpretation of the question.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    In the chemical plating experiment zinc powder is dissolved in a hot NaOH solution to form sodium zincate according to the following reacton: Zn(s) + 2NaOH(aq) Na2ZnO2(aq) + H2(g) Answer true or false for each of the following statements …
  2. Please check-Reiny

    Could you check these two problems? 3sqrt (y+2) = 3 is y = 25 Answers were: true or false I said true because I did it like this Square both sides=y + 2 = 3^3 y+2 = 27 y = 25 and sqrt (2y-6) = 3-y for y answes are: no solution 5 3,5
  3. Algebra-Please check

    Please check- sqrt of 2x + 15 = x Answers: -5.3 -3.5 -3 5 I think according to my calculations it would be 5, correct?
  4. Algebra-drwls please check!

    Posted by Megan on Tuesday, October 12, 2010 at 3:44pm. I have a question if someone could help, please explain it. Given b = -1 and h = -1, what is the equation of the graph if the parent function is y = sqrt (x) Answers: a.y = sqrt(x-1) …
  5. Algebra

    Could you please check my answers and help with the ones I can't figure out- 1. Solution to the radical function sqrt(12x+1) = 1 is x = 0 True or False I think it is true according to my calculations 2.Solve x = sqrt(8x) 8x = x^2 x^2 …
  6. Chemistry: Answer check please!

    1. Reactions follow the law of conservation of mass. a.) True b.) False Answer: True 2. Reactants are the materials used in a chemical reaction. a.) True b.) False Answer: True 3. In a chemical equation, the mass on the left of the …
  7. math- check please

    1) True/false: For any real number x, ln e^x = x. I think that is true. 2)true/false: (2 ln x)/ ln 10 = ln x^2 - ln 10 for all positive x. I think this is true too.
  8. Please check my answers

    Patient motion may create artifact that looks like an atrial arrhythmia?
  9. Science

    Hi. Could you Please check my answers? I just want to make sure they are correct. Thanks for the help in advance :). True or false: All matter on Earth contains energy- true?
  10. Fitness (Check answers)

    1) Sitting in class wearing ear buds during a lecture is effective listening. TRUE OR FALSE ~ (my answer is FALSE) 2) Defense mechanisms should be used as often as possible to deal with uncomfortable emotions. TRUE OR FALSE ~ (my answer …

More Similar Questions

Post a New Question