Algebra
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OpenStudy (anonymous):
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Juan is not yet 30 years old. He is 12 years older than Maria. Write an inequality to represent Maria' s age
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jimthompson5910 (jim_thompson5910):
let
m = maria's age
j = juan's age
jimthompson5910 (jim_thompson5910):
Juan is not yet 30 years old ----> j < 30
"He is 12 years older than Maria" tells us that j = m + 12
OpenStudy (anonymous):
how would it look like as an inequality?
jimthompson5910 (jim_thompson5910):
if j = m+12 and j < 30, then ....?
OpenStudy (anonymous):
It would look like j<30+12?
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jimthompson5910 (jim_thompson5910):
start with j < 30 and replace j with whatever its equal to
OpenStudy (anonymous):
so it would be 12<30 right
jimthompson5910 (jim_thompson5910):
j is not equal to 12
OpenStudy (anonymous):
aw I thought it was cause j=m
jimthompson5910 (jim_thompson5910):
no they aren't equal in age
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jimthompson5910 (jim_thompson5910):
one is 12 yrs older
OpenStudy (anonymous):
is it
m-12<30
m<30
30-m>12
jimthompson5910 (jim_thompson5910):
look back at my previous posts and try again
OpenStudy (anonymous):
I think it may be m+12<30
jimthompson5910 (jim_thompson5910):
now solve for m
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OpenStudy (anonymous):
would I subtract 12 from both sides?
jimthompson5910 (jim_thompson5910):
yep
OpenStudy (anonymous):
And ill get my answer?
jimthompson5910 (jim_thompson5910):
yes
OpenStudy (anonymous):
Alright thanks for the help
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jimthompson5910 (jim_thompson5910):
yw