2006-10-08 18:30:24 · 24 answers · asked by bittuwas 1 in Science & Mathematics ➔ Mathematics
easy
1st solve for x 3x = 12 so x = 4
put value in expression you mean x^2+x = 4^2+ 4 = 20
2006-10-08 18:32:24 · answer #1 · answered by Mein Hoon Na 7 · 0⤊ 2⤋
the fee is 4. if x is 4 then each and every thing is going easily using fact in the 1st problem, you at a million to unfavorable one and 11. on account that 3x is multiplying you employ branch. 12 divided by making use of three is 4 so 3x4 is 12 minus one is 11. 4 cases 2 is 8 plus 4 is 12.
2016-10-19 01:42:43 · answer #2 · answered by ? 4 · 0⤊ 0⤋
3x-1 = 11 >>>>>> 3x=12 >>>>>> x=4
substitute x=4 into x^2+x
>>>> 4^2 +4 =16 +4 =20
i hope that this helps
2006-10-09 07:52:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
3x - 1 = 11
3x = 11 +1
3x = 12
x = 4
4^2 + 4 = 8 + 4
= 12
2006-10-08 22:26:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋
As 3x-1= 11 then 3x=11+1
3x=12
x=12/3
x=4
The next part of your question isn't so clear. If you mean
X squared + X, then the answer is 20 of course. However, if you mean X x 2 + x, then the answer is 12.
2006-10-08 18:36:34 · answer #5 · answered by Greek_Warrior 3 · 0⤊ 0⤋
x=4 : x2+x=16+4=20
2006-10-08 19:59:16 · answer #6 · answered by **cutie** 2 · 0⤊ 0⤋
=>3x-1=11
=>x=4
therefore.......
if (x2+x) means (x^2+x) then
=>x^2+x
=>4^2+4
=>16+4
=>20
if (x2+x) means (2*x+x) then
=>2*x+x
=>2*4+4
=>12
2006-10-08 18:36:25 · answer #7 · answered by DeAd MaN 4 · 0⤊ 0⤋
3x - 1 = 11
3x = 12
x = 12/3
x = 4
x^2 + x = 4 * 4 + 4 = 20
2006-10-08 19:08:00 · answer #8 · answered by Walter W. Krijthe 4 · 0⤊ 0⤋
1st solve for x , 3x = 12 so x = 4
Put value in expression you mean x^2+x
= 4^2+ 4
= 16+4
=20
If u mean x*2+x,then
x=4, so 4x2+4=12 .
2006-10-08 19:03:24 · answer #9 · answered by Anonymous · 0⤊ 0⤋
12 or 20 depending what you mean by the question. X has a value of 4
2006-10-08 18:41:51 · answer #10 · answered by Logic is Limited to thought 2 · 0⤊ 0⤋