Simplify the algebraic expression by combining similar terms.
0.2(n - 4) + 0.3(n + 9) - 0.2n
2006-09-27 06:27:49 · 11 answers · asked by Me 6 in Education & Reference ➔ Homework Help
combine .2 with n-4 and .3 with n+9
you get .2n-.8+.3n+2.7-.2n
then combine like terms to get .3n+1.9
2006-09-27 06:31:38 · answer #1 · answered by J 3 · 0⤊ 1⤋
Here's how: Multiply it out. The number on the outside of the parenthesis gets multiplied to all of the parts on the inside of the parenthesis. Then just add and subtract all of the n numbers, and add and subtract all of the straight numbers. You'll have it in simplest form.
=0.2n-(0.2x4) + 0.3n+(0.3x9) - 0.2n. I'm just multiplying it all out here
Move things around (don't forget to carry the signs with you) until matching parts are with matching parts. If you do the multiplication of the numbers and add (and subtract) the matching parts together, you'll have it.
2006-09-27 13:40:40 · answer #2 · answered by writ_rrr 2 · 0⤊ 1⤋
Start by multiplying out the brackets. Make you multiply each term so 0.2n - 0.8+ ????
Then add up all the n's and add up all the free numbers.
Make sure you keep the +/- the same
2006-09-27 13:32:27 · answer #3 · answered by bobobob 4 · 0⤊ 1⤋
0.2(n - 4) + 0.3(n + 9) - 0.2n=
0.2n-0.8+0.3n+2.7-0.2n=
0.3n+1.9=0
0.3n= -1.9
n=.-1.9/0.3
n= -6 1/3
Hope this helps.
2006-09-27 13:37:35 · answer #4 · answered by Answerer17 6 · 0⤊ 1⤋
0.2(n - 4) + 0.3(n + 9) - 0.2n
0.2n-3.8+0.3n+9.3-0.2n
0.2n-0.2n+0.3 - 3.8+9.3
0.3n+5.5 < answer.
2006-09-27 13:37:14 · answer #5 · answered by Anonymous · 0⤊ 1⤋
=0.2n - 0.8 + 0.3n + 2.7 - 0.2n
=0.3n + 1.9
2006-09-27 13:38:31 · answer #6 · answered by Missy 2 · 0⤊ 1⤋
0.2n-0.8 +0.3n+2.7-0.2n =1.9+0.3n
2006-09-27 13:32:46 · answer #7 · answered by shruti g 1 · 0⤊ 2⤋
.2n-.8+.3n+.27-.06
2006-09-27 13:31:52 · answer #8 · answered by martin realzola 1 · 0⤊ 1⤋
.2n-.8+.3n+.27-.2n
.3n-.19
I could be wrong like the others!
2006-09-27 13:36:30 · answer #9 · answered by shay 3 · 0⤊ 1⤋
1.9 + 0.3n or 0.3n + 1.9
2006-09-27 13:41:04 · answer #10 · answered by ydde 2 · 0⤊ 1⤋