<img src="https://tex.z-dn.net/?f=n%20-%2012%20%3D%203n" id="TexFormula1" title="n - 12 = 3n" alt="n

ss7ja [257]

3 years ago

" class="latex-formula">
please I need help

Mathematics

2 answers:

Triss [41]3 years ago

7 0

Answer:

n=-6

Step-by-step explanation:

So first, you should subtract n from both sides to isolate the number -12. This will make the equation look like 2n=-12. Divide both sides by 2 because you want n to be by itself. This will give you the answer n=-6

Hope this helps

frozen [14]3 years ago

6 0

Answer:

n = -6

Step-by-step explanation:

n -12 = 3n

2n = -12

n = -6

You might be interested in

The graph of y = f(x) is shown below. What are all of the real solutions of f(x) = 0?

bazaltina [42]

The answer is 7 because f is a denomination

6 0

3 years ago

A coin collector has $45 in just dimes and quarters in a piggy bank he counted all the coins and there are 240 total how many ea

Whitepunk [10]

Answer:

The number of dimes are 100 and number of quarters are 140.

Step-by-step explanation:

Let the number of dimes be 'd' and quarters be 'q'.

Given:

The sum of amount is $45.

The total number of coins are 240.

1 dime = $0.10

∴ 'd' dimes = $\$0.10d$

1 quarter = $0.25

∴ 'q' quarters = $\$0.25q$

Now, as per question:

$d+m=240-----1\\0.1d+0.25q=45---2$

Multiplying equation (1) by -0.1 and adding the result to equation (2), we get:

$-0.1d-0.1q=240\times -0.1\\-0.1d-0.1q=-24\\0.1d+0.25q=45\\-----------\\0.15q=21\\q=\frac{21}{0.15}=140\\\\d=240-q=240-140=100$

Therefore, the number of dimes are 100 and number of quarters are 140.

7 0

3 years ago

-3(5n-8)=-8(n-3) Please Hurry

BartSMP [9]

Answer:

$- 3(5n - 8) = - 8(n - 3)$

$- 15n + 24 = -8 n + 24$

$- 15n + 8n = 24 - 24$

$- 7n = 0$

$n = \frac{0}{ - 7}$

$n = 0$

6 0

2 years ago

To convert 25 hours to minutes would you use the ratio 1/60

kodGreya [7K]

Answer:

Yes

Step-by-step explanation:

1 hour = 60 min

25 hours = 60 x 25 min

5 0

3 years ago

Find the length of the third side. If necessary, round to the nearest tenth.

My name is Ann [436]

Answer:

7.8

Step-by-step explanation:

8 0

3 years ago