更新1:
Shut up airman you idiot
Solve 10 > 20 - 5x????
2009-09-23 2:06 pm
do you have to change the direction of the signs if you divide or multiply by a negative number. Thanks for helping!!!
回答 (13)
2009-09-23 2:14 pm
✔ 最佳答案
10 > 20 - 5x2 > 4 - x
- 2 > - x
x > 2
Answer: x > 2
2016-12-04 8:06 am
you attempt to remedy for x so what you do is you attempt to get it on my own. First: you attempt to pass the ten to the different factor because of the fact it is not any longer which includes the x like the 5 is. What you do to a minimum of one factor you will desire to do to the different. So with the intention to do away with the +10 you will desire to subtract the ten from the two facets (5x + 10 - 10 > 30 -10) so which you get 5x > 20 2d, the 5 is being elevated to the x so the different of multiplication is branch. To get the x to be by capacity of itself you will desire to divide the two facets by capacity of 5 (5x)/5 > 20/5 the fives on the left hand factor would cancel out and you'd be left with x by capacity of itself on the left. This leaves you with the equation x > 4 and that's your answer.
2009-09-23 3:16 pm
10 > 20 - 5x
-5x < 10 - 20
-5x < -10
x > -10/(-5)
x > 2
-5x < 10 - 20
-5x < -10
x > -10/(-5)
x > 2
2009-09-23 2:24 pm
if u mean sign of ineqality yes...it changes direction..
2009-09-23 2:18 pm
10 > 20 - 5x
5x>20-10
5x>10
x>2 answer//
5x>20-10
5x>10
x>2 answer//
2009-09-23 2:16 pm
I think the answer is 2 < x
2009-09-23 2:14 pm
Yes, you do have to change the direction of the greater than or less than signs when dividing/multiplying by a negative number.
So, your answer would be:
10 > 20 -5x
(10-20) > -5x
-10 > -5x
(-10/-5) < x (change direction)
2 < x
So, X must be greater than 2.
Hope that helps! Good luck.
So, your answer would be:
10 > 20 -5x
(10-20) > -5x
-10 > -5x
(-10/-5) < x (change direction)
2 < x
So, X must be greater than 2.
Hope that helps! Good luck.
2009-09-23 2:13 pm
If you are in a rush try:
http://www.wolframalpha.com/input/?i=+10+%3E+20+-+5x
http://www.wolframalpha.com/input/?i=+10+%3E+20+-+5x
2009-09-23 2:11 pm
Yes ! when you multiply by a negative number, the direction of the inequality will change.
x > 2
QED
x > 2
QED
2009-09-23 2:10 pm
yea u have to change the signs. I did this is maths last term but ive forgotten the rest but yea if you multiply or divide by a negative u have to change the direction of the sign
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