measurment be on his model? PLEASE HELP :(. Just tell me how to do it. MY math teacher says to do 2/8=x/28 as a proportaion but I dont know how :( Please help :)
2007-09-22 04:05:06 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
You must know that 2:8in = 1:4in.
So, 1:4 = x:28
Since 4 x 7 = 28, you must multiply the 1 by 7 as well to make the ratios equivalent.
(1 x 7) : (4 x 7) = x : 28
x = 7
2007-09-22 04:10:13 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Well.... Your math teacher is correct. But it's easier to note that you're making a 1/4 scale model (2/8 = 1/4). So just divide all of your measurements of the real object by 4. The 28 inch measurement would then become 28/4 = 7 inches long.
Doug
2007-09-22 04:16:05 · answer #2 · answered by doug_donaghue 7 · 0⤊ 0⤋
2":8" = 1:4
So every 4" on the object will be 1" on your model.
28"/4 = 7"
So your measurement will be 7" on the model.
or 2/8 = 1/4 = 7/28
2007-09-22 04:15:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
2:8 = 1/4 scale
28/4 = 7 inches
2007-09-22 04:09:39 · answer #4 · answered by Drew 3 · 0⤊ 0⤋