For example, 6.4 / 7.2 = 0.8 / 1.2
2006-08-03 12:11:00 · 7 answers · asked by chrissycakess 1 in Education & Reference ➔ Homework Help
Cross multiply, and see if the two answers are equal.
6.4 * 1.2 = 7.68
7.2 * 0.8 = 5.76
Since they aren't, the two proportions are not equal.
2006-08-03 12:15:46 · answer #1 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋
Well, if you put 6.4 divided by 7.2 into your calculator you get .888
and if you put .8 divided by 1.2 into your calculator you get .66667 so it's clear the equation isn't true.
2006-08-03 19:17:12 · answer #2 · answered by rj 2 · 0⤊ 0⤋
The easiest way is to move the decimal over one place:
64/72 = 8/12
then reduce the fractions to their lowest:
64/72 can be reduced to 8/9
8/12 can be reduced to 2/3
so they are NOT equal
2006-08-03 19:17:35 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Just divide them out.
6.4/7.2 = .888888...
0.8/1.2 = .666666...
The two are not equal to each other.
2006-08-03 19:17:26 · answer #4 · answered by cotopaxi 5 · 0⤊ 0⤋
To check if a/b = c/d you check if a*d = b*c
6.4*1.2 = 7.68
7.2*0.8 = 5.76
So they are not equal!
2006-08-03 19:16:34 · answer #5 · answered by Anonymous · 0⤊ 0⤋
All of the previous answerers are 100% correct.
2006-08-03 19:33:18 · answer #6 · answered by MollyMAM 6 · 0⤊ 0⤋
6.4 divided by 7.2
0.8 divided by 1.2
They are not equal.
2006-08-03 19:17:46 · answer #7 · answered by ed 7 · 0⤊ 0⤋