Mathematics
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OpenStudy (anonymous):
Which of the following best describes the solution to the equation below?
30x + 27 = -45x - 6
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OpenStudy (redheadangel):
First you have to move -45 to the other side of the equal side
OpenStudy (anonymous):
ok
OpenStudy (redheadangel):
you would do that by adding 45 to 30x
OpenStudy (redheadangel):
75x+27=-6
OpenStudy (redheadangel):
then you subtract 27 from -6
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OpenStudy (anonymous):
Ok. im writing this down
OpenStudy (redheadangel):
that would get you 21 so...75x=21
OpenStudy (redheadangel):
then divide 75 from 21
OpenStudy (redheadangel):
that would mean your answer would be: 3.57
OpenStudy (anonymous):
these are the choices
exactly one real solution,
exactly one real solution,
no real solutions
infinite real solutions
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OpenStudy (redheadangel):
oh.... ok
OpenStudy (redheadangel):
so: exactly one real solution
OpenStudy (anonymous):
The first one is x = -11/25
The second one is x = 2 1/5
OpenStudy (redheadangel):
?
OpenStudy (anonymous):
The first Choice includes the 1st one and the second choice included the other one
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OpenStudy (redheadangel):
ohh.. hmmm
OpenStudy (anonymous):
30x + 27 = -45x - 6
30x + 45x = -6 -27
75x = 33
x = 33/75
OpenStudy (redheadangel):
yes, but that isn't one of the answers..
OpenStudy (anonymous):
exactly
OpenStudy (redheadangel):
I am not sure where to go from here maybe @Here_to_Help15 can take over :)
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OpenStudy (anonymous):
hold on
x = 33/75
x = 11/25
OpenStudy (anonymous):
exactly one real solution
OpenStudy (redheadangel):
ohhhh so the first one then @Kyliejones
OpenStudy (anonymous):
Ok thanks!
OpenStudy (here_to_help15):
30x + 27 = -45x - 6 30x + 45x = 27 - 6
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OpenStudy (here_to_help15):
30x + 27 = -45x - 6 *
30x + 45x = 27 - 6 i meant hehe
OpenStudy (here_to_help15):
?
OpenStudy (here_to_help15):
75x=21 so x=21/75 can you go on