PLEASE HELP!! For what value of x does 2x-4/x+7 = 1/3?

A. 33/5

B. 2

C. 19/5

D. -7

A i think

Step-by-step explanation:

1 Multiply both sides by 3x3x.

6{x}^{2}-12+21x=x6x

2

−12+21x=x

2 Move all terms to one side.

6{x}^{2}-12+21x-x=06x

2

−12+21x−x=0

3 Simplify  6{x}^{2}-12+21x-x6x

2

−12+21x−x  to  6{x}^{2}-12+20x6x

2

−12+20x.

6{x}^{2}-12+20x=06x

2

−12+20x=0

4 Use the Quadratic Formula.

x=\frac{-20+4\sqrt{43}}{12},\frac{-20-4\sqrt{43}}{12}x=

12

−20+4√

43

,

12

−20−4√

43

5 Simplify solutions.

x=-\frac{5-\sqrt{43}}{3},-\frac{5+\sqrt{43}}{3}x=−

3

5−√

43

,−

3

5+√

43

answer: '

the distance between points l and m

step-by-step explanation:

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.