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Mathematics 19 Online
OpenStudy (anonymous):

Which of the following are solutions to the equation below? Check all that apply. 24x2 - 47x + 20 = 0 A. x = B. x = 8 C. x = D. x = 4 E. x = F. x =

OpenStudy (anonymous):

OpenStudy (anonymous):

@welshfella i dont how to do it with fractions

OpenStudy (welshfella):

this is a tricky one to factor - even if it will factor. Try the substitution method for each option

OpenStudy (anonymous):

plug in the options for x?

OpenStudy (welshfella):

x = 3/4 24(3/4)^2 - 47(3/4) + 20 - and check if it comes to 0. use ur calculator.

OpenStudy (welshfella):

yes

OpenStudy (anonymous):

3/4 came out to -1.75 so thats not it

OpenStudy (anonymous):

4/3 worked it came out to 0

OpenStudy (welshfella):

yes thats correct

OpenStudy (anonymous):

and 5/8 worked

OpenStudy (welshfella):

it factors to (8x - 5)(3x - 4) = 0 so x = 3/4 , 5/8 yes

OpenStudy (anonymous):

4/3?

OpenStudy (welshfella):

sorry 4/3

OpenStudy (anonymous):

tyvm

OpenStudy (welshfella):

yw

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