Think of a number. Mutiply by 5. Add 8. Multiply by 4. Add 9. Multiply by 5. Subtract 105. Divide by 100. Subtract 1. How does your result compare with your original number? Explain.
I was told you can subsitute N for the number , but i dont understand how this works...
can someone please help me..with an explaination..
THANKS!
2007-02-20 12:27:57 · 10 answers · asked by carmenclassof06 4 in Education & Reference ➔ Homework Help
The result is the same as the original number.
if the number you are thinking about is N, then you would multiply it by 5: 5N
then add 8: 5N + 8
then muliply by 4: 4(5N + 8) = 20N + 32
then add 9: (20N + 32) + 9 = 20N + 41
then multiply by 5: 5 (20N + 41) = 100N + 205
then subtract 105: (100N + 205) - 105 = 100N + 100
then divide by 100: (100N + 100)/ 100 = N + 1
then subtract 1: (N + 1) - 1 = N
the entire process unsimplified would look like this:
{[5[4(5N + 8) + 9] - 105] /100} - 1
2007-02-20 12:44:37 · answer #1 · answered by k t 4 · 0⤊ 0⤋
n x 5 = 5n multiplied the number by 5
5n + 8 = 5n + 8 added 8
( 5n +8 ) x 4 = 20n + 32 multiplied by 4
20n + 32 + 9 = 20n + 41 added 9
( 20n + 41 ) x 5 =100n + 205 multiplied by 5
100n + 205 - 105 = 100n + 100 subtracted 105
( 100n + 100 ) : 100 = n +1 divided by 100
n + 1 - 1 = n subtracted 1
i started by picking a random number and named that number n.
after doing everything the problem requested.
the original number and the final number are the same.
2007-02-20 21:19:49 · answer #2 · answered by bubicoo 2 · 0⤊ 0⤋
N x 5 = 5N
5N + 8
4 X (5N + 8) = 20N + 32
20N +32 +9 = 20N +41
5 X (20N +41) = 100N + 205
100N + 205 - 105 = 100N + 100
(100N + 100)/ 100 = N+1
N + 1 - 1 = N
It's the same number : )
2007-02-20 20:38:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I started off with four and ended up with 4. I cannot explain it.
Another fun thing to do is write the number 3 down on a piece of paper. Hide the paper in your hand. Ask a person to think up a number between 1 and five. You will be surprised at how many people answer three.
2007-02-20 20:38:57 · answer #4 · answered by Anne2 7 · 0⤊ 0⤋
1x5=5+8=13x4=52x5=260-105=155/100=1.55-1=.55
it is .55 more than my original number.
2007-02-20 20:33:24 · answer #5 · answered by wind it up 4 · 0⤊ 0⤋
i got the same answer as my choosen number. u just plus 5 with 8 and so on.. u will get answer 1.
so when ur number choosen it is always more then 1. so when u subtrat it with the last 1 u will get the answer.
2007-02-20 20:40:43 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I JUST FOUND OUT IT HAS TO DO WITH YOU DIVIDING AND SUBTRACTING! Also YOu will always get a decimal if you have a odd number and i got .95
2007-02-20 20:35:19 · answer #7 · answered by runescaperxs 2 · 0⤊ 0⤋
To compare the number resulted with the original number, I started off with one, and the result was it was sixty numbers higher than my starting number.
2007-02-20 20:31:15 · answer #8 · answered by Phlow 7 · 0⤊ 0⤋
The outcome is the exact same as the original number. I'm not sure how it works, but any number you use, the outcome will be the same.
2007-02-20 20:38:55 · answer #9 · answered by Jordan Bucher 3 · 0⤊ 0⤋
714 .Cant explain it ,i just know its true .
2007-02-20 20:31:38 · answer #10 · answered by Anonymous · 0⤊ 0⤋