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Vesna [10]
3 years ago
10

How do I solve -6n+3n=-18

Mathematics
2 answers:
DENIUS [597]3 years ago
8 0
You add the alike variables first so -6n + 3n = -3n

then the equation is -3n=-18
Now divide each side by -3 to get the n by itself

-3n     -18
---   = ------
-3         -3


n=6
finlep [7]3 years ago
5 0
First simplify. Combine like terms

-6n + 3n = -3n

-3n = -18

Isolate the n, divide -3 from both sides

-3n/-3 = -18/-3

n = -18/-3

n = 6 (remember, in dividing two negative numbers, the answer will be positive).

6 is your answer

hope this helps
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Divide 28 bottles of water into two groups so the ratio is 3 to 4. Be sure to show your work.
tatyana61 [14]

Answer:

12:16

Step-by-step explanation:

28 split into two groups could be 12 : 16. To check the work, see if 3/4 is equal to 12/16. It is, so this is the accurate ratio, as 12 + 16 = 28 and 12/16 = 3:4.

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3 years ago
Complete the square
Nesterboy [21]

Answer:

vertex at (1, -3)

Step-by-step explanation:

When x = 0

y² + 6y + 1 = 0

y² + 6y +   = -1

y² + 6y + 9  = -1 + 9

(y + 3)² = 8   or    (-y - 3)² = 8

y + 3 = √8    or    -y - 3 = √8

y = - 3 +√8    or    y = -3 - √8

(0, - 3 +√8)   and (0, -3 - √8)

The mid point between these two is the average

y = ( - 3 + √8 +  -3 - √8) / 2 = - 3

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9 - 18 + 1 = -8x

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4 0
3 years ago
My mother used 3/5 of a box of 35 eggs estimate how much sh used
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Read 2 more answers
Solve for x.<br> 6x - 3x = 12
expeople1 [14]

Answer:

x=4

Step-by-step explanation:

3x = 12

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8 0
3 years ago
(-4, -2); y = - 2x + 4
padilas [110]

Answer:

y = -2x - 10

Step-by-step explanation:

Slope intercept form of equation is of form

y = mx+c

where m is the slope of line and c is the y intercept of the line.

Y intercept is point on y axis where the line intersects the y axis.

_____________________________

Given equation

y = -2x +4

comparing it with y = mx+ c

m = -2 , c = 4

_____________________________

when two lines are parallel, their slopes are equal.

Let the equation of new line in slope intercept form be y = mx + c

Thus slope of of new required line is -2

Thus m for new line is -2.

now, equation of required line : y = -2x+c

Given that this line passes through (-4, -2). This point shall should satisfy equation  y = -2x+c.

Substituting the value of (-4, -2) we have

-2 = -2(-4)+c

=> -2 = 8 +c

=> -2 -8 = c

=> c = -10.

Thus , equation of required line is  y = -2x - 10.

8 0
3 years ago
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