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3 years ago

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

2 answers:

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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4 years ago

The perimeter of the scalene triangle is 60 cm. The length of the longest side is 4 times that of the shortest side. Which state

NNADVOKAT [17]

Answer:

We know that in a scalene triangle all sides (and angles) are different.

Let

z = length of longest side

y = length of second side

x = length of shortest side

The perimeter of the scalene triangle is 60 cm

x + y + z = 60 cm

The length of the longest side is 4 times that of the shortest side.

z = 4*x

We are left with the following equations

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We will test every affirmation

Number one

The value of x can equal 40.

FALSE. The longest side cannot be greater than the perimeter.

Number two

The longest side can equal 30 cm

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This statement is TRUE

Number three

The shortest side can equal 7 cm

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y = [60 -28 - 7] cm = 25 cm

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Number four

The value of x can equal 25

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This statement is FALSE

Number five

The shortest side can equal 5

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3 years ago

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Answer:

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Step-by-step explanation:

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Answer:

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In this problem, we have that:

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