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frozen [14]
3 years ago
11

The sum of twice a number and seven is 13. Find the number.

Mathematics
1 answer:
Furkat [3]3 years ago
3 0

Answer:

<h2>The answer is 3</h2>

Step-by-step explanation:

Let the number be x

The statement

twice a number is written as

2x

The sum of twice a number and seven is written as

2x + 7

The result is 13

So we have

2x + 7 = 13

Subtract 7 from both sides

That's

2x + 7 - 7 = 13 - 7

2x = 6

Divide both sides by 2

That's

\frac{2x}{2}  =  \frac{6}{2}

We have the final answer as

<h2>x = 3</h2>

Hope this helps you

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Calculate the cost (omit commission) of buying the 500 shares of Delta Air at $50.61.
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Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. The cost of 500 shares of Delta Air is $25,305.

<h3>What is multiplication?</h3>

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

The cost of a single share is $50.61, therefore, the cost of 500 shares will be,

Cost of 500 shares = 500 × cost of single share

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Hence, the cost of 500 shares of Delta Air is $25,305.

Learn more about Multiplication:

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\sf{\qquad\qquad\huge\underline{{\sf Answer}}}

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