second grade

posted by .

I am having trouble, I have a question I think I got the answer because I kept multiplying and dividing, but I have to show my work but when i try, my answer is not the same.

The question is A traffic light at one intersection changes every 28 seconds and the light at the other intersection changes every 32 seconds. How long until they both change together?

I got every 8 light changes. Can you please help me solve this?

  • second grade math -

    sorry forgot to put math.

  • second grade -

    I got it, it is every 224 seconds. I had to find the LCM to find the GCF. I then had to multiply 28 and 32 to divide the GCF which gave me 224. Thanks anyway.

  • second grade -

    Definitely not 2nd grade..

  • second grade -

    it is 1,235,1469,2587,265,874 times 1million

  • second grade -

    don't listen to bill.

    he is in high school.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 2(check) cont..

    1)solve the inequality -3(r-11)+15>_9 my answer = r<_13 2)solve the inequality -2<4z+10<_12 my answer = -3<z<_1/2 3)solve the inequality 2x-5<_10 or 33-4x<5 my answer is x<_15/2 or <7 4)solve the inequality …
  2. algebra

    I'm having trouble getting the symbols to post correctly on this page so let me try this again..... 3(7+2x) ¡Ü 30+7 (x-1) The answer to this inequality problem is x x ¡Ý-2 -2 I can't figure out how they got this answer. Can you …
  3. Math...Applying the Order of Operations

    Can you please show me where i'm going wrong?
  4. lisa

    This is a question given to me to answer:How is dividing a polynomial by a binomial similar to or different from the long division you learned in elementary school?
  5. Dividing Decimals

    I need Help with solving these problems. If you could show me the steps I think I will be able to get it. 1) 0.87/0.2 = 4.35 2)4.4/0.3 = 14.66 3)5.0/5.5 = 0.90 I got the answer by Calculator but when I do it myself I don't see how …
  6. 6th grade math

    Find the value fir each expression. Show your work. (13.28 - 7.8) divided by 4. I have the answer in the back of my book and when I try to work the problem out I keep getting the wrong answer. The answer is supposed to be 1.345 I can …
  7. Math 141

    I am having trouble with this problem. perform the indicated operations and simpily the result as much as possible a) (3x - 2) (x^2 + 2x - 4 ) the answer i got so far is 3x^3 + 4x^2 -16x + 8. Am i done or i have to conitnue to simplify?
  8. Chemistry

    Please help! I have spent hours trying to work these three problems. How many grams of solid barium sulfate form when 27.1 mL of 0.160 M barium chloride reacts with 53.4 mL of 0.065 M sodium sulfate?
  9. math

    This was on my test and have a few more question that is from my test. 18.The Sum of five unequal natural numbers is 90. The second largest of these five numbers can be at the most?
  10. Calculus

    Hello, I would greatly appreciate any help that I can have with the following calculus question below. It has to do with separable differential equations. I'm also going to explain what I've done so far, so please bear with me (but …

More Similar Questions