Most popular questions and responses by Infinity_plus_one
  1. math

    I know that 1 m = 100 cm (___kg/cm^3)(100cm/1m)^3 I cube 100cm/1m, because I wanted cubic centimeter rather than just centimeter. Notice that my units for cubic centimeters cancel/divide because I multiply the cubic centimeters in the numerator. You do the

    posted on August 26, 2008
  2. math

    I've already helped you in your post on Sunday, August 24, 2008 at 10:40am. Please try to do the problem and post your work if you are still having trouble it.

    posted on August 24, 2008
  3. math

    I'll give you an example problem. Hopefully, this will help you solve your problem. 4/8 =m/2 numerator 1/ denominator 1 = numerator 2/denominator 2 To solve for m, you simply cross multiply. You multiply one numerator by the other denominator and vice

    posted on August 24, 2008
  4. math

    you have r=56mi/hr t=5hr plug what you have into the equation, d=rt to find how far the driver will travel.

    posted on August 23, 2008
  5. Algebra

    T=T-shirts S=shorts T= 2S I know half as much shorts were sold and doubling the number of shorts would give me the number of t-shirts. 9T + 14S = 256 Because I know that T=2S, I could replace the T with 2S. 9(2S)+14S=256 By using substitution, I have one

    posted on August 22, 2008
  6. Algebra 2

    do you mean y= 4/(x+5)? When the question asks for the domain, it is essentially asking what numbers I can plug into x to get a real number answer for y? Hint: the denominator cannot equal to 0. You cannot divide anything by zero! What values of x can you

    posted on August 22, 2008
  7. 8th grade

    For cases where you have 0=0, like your first and third problem, notice how plugging any number for Y will work. The numbers on to the left and to right of the equal sign will always equal. Therefore, you'll say Y= all real numbers. For the second problem,

    posted on August 22, 2008
  8. calculus

    Typo: This is my "denominators*": ______(h)(x+h-1) =(x-1)(h)______

    posted on August 22, 2008
  9. calculus

    You have to remember you have to divide the "entire" numerator. You cannot just divide an h to one part of numerator to cancel. You can only cancel when the factors in the numerator are multiplying. For example, [(2x)(h)]/h. Your x+h-1 and x-1 belongs in

    posted on August 22, 2008
  10. math

    I've already answered your post on Thursday, August 21, 2008 at 9:54pm.

    posted on August 22, 2008
  11. math

    the simplified/preferred answer would be the one without the parenthesis Make sure not to skip steps! (x^3m-t^5n)^2 As you can see below, the 2nd and 3rd terms (both negative) do not cancel out! Also, watch your signs on the last term. Multipling two

    posted on August 22, 2008
  12. algebra

    You can simplify this equation by combining like terms. Like terms are terms with the same variables raised by the same exponents. For example, 3x and 4x Both has same variable, x. Both raised by same exponent, 1. Therefore, I could add them. 3x+4x=7x

    posted on August 22, 2008
  13. math

    Those answers look right! You pulled out the lowest common denominator (LCD) and you cannot factor it further. The second one you grouped and found that both have a common factor of (y-1). Great job!

    posted on August 22, 2008
  14. calculus

    basically you do the same as the previous question you had. [f(x+h)-f(x)]/h f(x+h)= [2(x+h)]/(x+h-1) f(x)= 2x/(x-1) [[2(x+h)]/(x+h-1)]-[2x/(x-1)]/h then simplify! (hint: find a common denominator in order to combine to one whole fraction) Make sure you put

    posted on August 22, 2008
  15. math

    Yes, your answers look correct! The order is okay. The polynomial is usually arranged so that the exponent of one variable is in increasing or decreasing order.

    posted on August 22, 2008