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serious [3.7K]
3 years ago
13

Please simplify! 1+x-1+12x=12x-3

Mathematics
2 answers:
Zina [86]3 years ago
8 0

Answer:

x = - 3

Step-by-step explanation:

1 + x - 1 + 12x = 12x - 3

Subtract 12x from both sides.

1 + x - 1 = - 3

Combine like terms on the left side.

x = - 3

adoni [48]3 years ago
8 0

Answer:

1<em>+</em><em>x</em><em>-</em><em>1</em><em>+</em><em>1</em><em>2</em><em>x</em><em>=</em><em>1</em><em>2</em><em>x</em><em>-</em><em>3</em>

Step-by-step explanation:

x+12x-12x=-3-1+1

x=-3

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Ustin weighs 15 pounds less than Greg weighs. Half of Greg's weight is 75 pounds less than Justin's weight. How much does each o
Leto [7]

The answer to this question is A

5 0
3 years ago
Really easy math question
Eddi Din [679]

Number of sodas sold = 130

Number of hot dogs sold = 65

Step-by-step explanation:

Given,

Combined number of sodas and hot dogs sold = 195

Let,

x represent the number of sodas sold

y represent the number of hot dogs sold

According to given statement;

x+y=195     Eqn 1

x = 2y        Eqn 2

Putting value of x from Eqn 2 in Eqn 1

2y+y=195\\3y=195

Dividing both sides by 3

\frac{3y}{3}=\frac{195}{3}\\y=65

Putting y=65 in Eqn 2

x=2(65)\\x=130

Number of sodas sold = 130

Number of hot dogs sold = 65

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/12973601
  • brainly.com/question/13063819

#LearnwithBrainly

4 0
3 years ago
Read 2 more answers
Y=3×+7 y=×-9 what is the solution of the equation
Aneli [31]

Since both equations are equal to y you can just make them equal to each other, like this 3x + 7 = x - 9. From there isolate the varible x on one side so that the solution will be on the other side of the equation. I'll do the steps too for you.

3x + 7 = x - 9

2x + 7 = -9

2x = -16

x = -8

Hope this helps :)

7 0
3 years ago
Read 2 more answers
Here are the prices of five new pairs of hockey skates, in dollars: 59, 60, 65, 99, 175. The standard deviation is about $49. If
Phoenix [80]

Answer:

The standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

Step-by-step explanation:

The prices are given to be : 59, 60, 65, 99, 175

Standard deviation = $49

Now, if we add or subtract any constant value to each of the terms then the standard deviation remains unchanged.

But, we add a new price in the given data that is $450

\text{New standard deviation = }\sqrt{\frac{\sum (\bar{x}-x_i)^2}{n}}\\\\\bar{x}\text{ is the mean of data after adding 450 and}\\x_i\text{ are the price values of the sample data}

Hence, Standard deviation is calculated to be 139.5

Therefore, the standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

6 0
3 years ago
Read 2 more answers
How long will it take for the balance of an account to double if the savings account earns 0.75% annual interest compounded mont
spin [16.1K]
Let the amount deposited (principal) be x, then the amount after the required time = 2x.
A = P(1 + r/n)^nt: where A is the future value = 2x, P is the principal = x, r is the rate = 0.75%, n is the number of accumulation in a year = 12, t is the number of years.

2x = x(1 + 0.0075/12)^12t
2 = (1 + 0.000625)^12t
log 2 = 12t log (1.000625)
log 2 / log (1.000625) = 12t
1109.38 = 12t
t = 92 years
4 0
3 years ago
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