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4 years ago

6

-3x - 8 + 6x = 7 wat is the answer

2 answers:

Aliun [14]4 years ago

7 0

3x-8+6x=7
9x-8=7
9x=15
x=9/15
x=3/5

Fudgin [204]4 years ago

5 0

Answer: " x = 5 " .
_______________________
Solve for "x" ; Given: " -3x - 8 + 6x = 7 " ;
____________________
Combine the "like terms" on the left-hand side of the equation:

-3x + 6x = + 3x ;
__________________________
Rewrite the equation:

3x - 8 = 7 ;
________________
Add "8" to EACH SIDE of the equation:
____________________________
   3x - 8 + 8 = 7 + 8 ;
____________________________
to get:

        3x = 15 ;
____________________________
Divide EACH SIDE of the equation by "3" ; to isolate "x" on one side of the equation; and to solve for "x" ;
____________________________
        3x / 3 = 15 / 3 ;
____________________________
             x = 5 .
____________________________

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Step-by-step explanation:

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3 years ago

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Answer:

The correct option is V = one-third (6) (4) (8).

Step-by-step explanation:

The volume of a rectangular pyramid is:

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Here,

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h = height

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3 years ago

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iren [92.7K]

Answer:

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Step-by-step explanation:

Look at the place values.

In 700, 000, the thousands column is in the third digit. Therefore add nine to that place.

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Find the possible values of k if one of the roots of the quadratic equation x^2 - kx + 8 = 0 is twice the other.

kondor19780726 [428]

Answer:

$k=\pm 6$

Step-by-step explanation:

The given quadratic equation is :

$x^2 - kx + 8 = 0$

One of the roots of this equation is twice that of the other. Let the roots are $\alpha \ and\ \beta$ , $\alpha =2\beta$

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$\alpha +\beta =\dfrac{-(-k)}{1}\\\\\alpha +\beta =k\\\\3\beta =k\ .......(1)$

Product of roots,

$\alpha \beta =\dfrac{c}{a}\\\\2\beta ^2=\dfrac{8}{1}\\\\\beta =\pm 2$

If $\beta =\pm2$ ,

$k=3(2)\\\\=\pm 6$

So, the value of k is equal to $\pm 6$ .

8 0

3 years ago