2006-06-13 14:46:02 · 13 answers · asked by sabrina0627@sbcglobal.net 1 in Education & Reference ➔ Homework Help
if the number is 7, then 2 x 7 + 28 = 6 x 7
if the number (y) is greater than 7, then 2y +28 < 6y for any number. compare 2 x 8 +28 < 6 x 8 with 2 x 5 > 6 x 5.
2006-06-13 14:57:17 · answer #1 · answered by paul w 2 · 0⤊ 0⤋
X=7
7X2=14+28=42
6X7=42
X=7
2006-06-13 14:52:59 · answer #2 · answered by Anonymous · 0⤊ 0⤋
set x as the number
2x + 28
-4x
x>/= 7 (divde by -4, but when inequalities are divided by negative number, sign switches direction)
x is greater or equal than 7
2006-06-13 17:09:49 · answer #3 · answered by asrael_espoir 3 · 0⤊ 0⤋
The answer is 7 and this is how I worked it out.
Subtract 2n from 6n and you get 4n. Divide both sides (28<4n) by four, the quotient is seven. BUT if the 4n was negative, you would switch the sign from n<7 to n>7.
2006-06-13 15:22:43 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The answer is 7 or less than 7.
2006-06-13 14:52:56 · answer #5 · answered by cath12348 1 · 0⤊ 0⤋
2n + 28 <= 6n
28 <= 4n
7 <= n
n >= 7
2006-06-13 14:54:49 · answer #6 · answered by Anonymous · 0⤊ 0⤋
2x+28<6x
28<4x
7
2006-06-13 14:50:18 · answer #7 · answered by mrchiangling 2 · 0⤊ 0⤋
answer is 7
2x+28=6x
28=6x
----
2x (divide 2x by 6x) gives you
4x so
28=4x (divide 28 by 4) gives you 7
2006-06-13 14:58:57 · answer #8 · answered by kdizzy 2 · 0⤊ 0⤋
2x +28 <= 6x
28 <= 4x
7<=x
2006-06-13 14:49:32 · answer #9 · answered by csucdartgirl 7 · 0⤊ 0⤋
x is greater than or equal to 7
2006-06-14 07:34:03 · answer #10 · answered by elr212006 3 · 0⤊ 0⤋