SOLUTION: Given the following expression 4 square root 7x , what value must x become in order for the expression to simplify to 20 square root 7. a. 5 b. 25 c. 1 d. not possible

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Question 1038093: Given the following expression 4 square root 7x , what value must x become in order for the expression to simplify to 20 square root 7.
a. 5
b. 25
c. 1
d. not possible
Found 2 solutions by tutor_paul, MathTherapy:
Answer by tutor_paul(519)   (Show Source): You can put this solution on YOUR website!

For this to be , the original expression needs to be multiplied by 5. Another way to represent 5 is .
So:
=
Therefore,

==============
Good Luck,
tutor_paul@yahoo.com
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Given the following expression 4 square root 7x , what value must x become in order for the expression to simplify to 20 square root 7.
a. 5
b. 25
c. 1
d. not possible 


16(7x) = 400(7) --------- Squaring both sides

112x = 2,800

 or  

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