Mrs. jenkins was arranging chairs for a school awards assembly. each row contained 15 chairs. if there were 21 rows many chairs had to be arranged?

 315  chairs had to be arranged .

Step-by-step explanation:

Given : Mrs. Jenkins  was arranging chairs for a school awards assembly.

Number of chairs in each row = 15

Then by using MULTIPLICATION OPERATION, the number of chairs in 21 rows :-

Therefore, the total number of chairs had to be arranged =315

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

step-by-step explanation:

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