A collection of jewlry includes two rings, one 18 years old and the other 46 years old. In how many years will the older ring be twice as old as the newer ring.
Ok I already have the answer to this problem, so thats not my problem. I really WANT to know how you do this problem so if you know how to solve this in the uhh....algebraic way please help me. Explain how you got the answer that you got and show your steps please. I will withhold the answer to this math question and choose the first person who gets it right and shows how they did it as the best answer. PLEASE HELP ME AS SOON AS POSSIBLE!
2007-02-01 13:27:13 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
you can set up an equation 2(18 + x) = 46 +x. this shows that in x years, the older ring will be twice as old as the 18 year old ring. then solve for x, so 36 + 2x = 46 + x, then subtract x from both sides so that 36 + x = 46. then subtract 36 from both sides so x = 10.
2007-02-01 13:32:12 · answer #1 · answered by Maura W 1 · 1⤊ 0⤋
*Algebraic equation > 2(18 + x) = 46 + x. The variable "x" represents a value/number.
First: eliminate parenthesis --- distribute the outer term with the terms in parenthesis...
2(18) + 2(x) = 46 + x
36 + 2x = 46 + x
Sec: subtract "36" from both sides (when you move a term to the opposite side, always use the opposite sign)....
36 - 36 + 2x = 46 + x - 36
2x = 46 - 36 + x
2x = 10 + x
Third: subtract "x" from both sides...
2x - x = 10 + x - x
x = 10
*Solution --- the older ring will be twice as old as the new ring in 10 years.
2007-02-01 18:50:38 · answer #2 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
You need to find the LCM with this you need to find the prime factorization of the number. Do as the following:
18:3x6
46:2to the fourthx3
now circle the HIGHEST exponents, if there is no exponent just pick one of the numbers.
3x6x2 to the fourth
multiply that and you get your answer
I got 288 years.
2007-02-01 13:38:12 · answer #3 · answered by B Rad 2 · 0⤊ 0⤋
ok you have to do 2 times 18+z= 46. so really this is fairly easy (no offense) so 18 times 2 would equal 36 then plus 10 would equal 46. hope that helps! and just to let u no im in sixth grade (not to brag)
2007-02-01 13:34:07 · answer #4 · answered by dot_ridr 2 · 0⤊ 2⤋
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2016-11-02 02:30:07 · answer #5 · answered by atalanta 4 · 0⤊ 0⤋