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Mathematics 9 Online
OpenStudy (anonymous):

Solve the combined inequality 3x – 7 > -10 and 5x + 2 < 22

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

solve each inequality one at a time

jimthompson5910 (jim_thompson5910):

what do you get when you solve 3x – 7 > -10 for x

OpenStudy (anonymous):

x>-1

OpenStudy (anonymous):

i thought you have to solve both at the same time

jimthompson5910 (jim_thompson5910):

nope you solve each one at a time, then you combine the answers if possible

OpenStudy (anonymous):

x<4 for the second

jimthompson5910 (jim_thompson5910):

now combine the two

jimthompson5910 (jim_thompson5910):

if x is some number that's BOTH greater than -1 AND less than 4, then ???

OpenStudy (anonymous):

idk

jimthompson5910 (jim_thompson5910):

x>-1 and x < 4 -1 < x and x < 4

jimthompson5910 (jim_thompson5910):

what's next

OpenStudy (anonymous):

i dont know

jimthompson5910 (jim_thompson5910):

-1 < x and x < 4 would combine to -1 < x < 4

jimthompson5910 (jim_thompson5910):

it's just a way of saying x is between -1 and 4

OpenStudy (anonymous):

oh Thanks

jimthompson5910 (jim_thompson5910):

you probably are overthinking things

OpenStudy (anonymous):

right

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