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2 years ago

Two times a number x increased by 8 is 20. Which one of the following

Mathematics

2 answers:

Reika [66]2 years ago

8 0

The equation for the statement "two times a number x increased by 8 is 20" is 2x+8=20.

The given statement is two times a number x increased by 8 is 20.

We need to write the equation to represent this statement.

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Now, two times a number x=2x

Increased by 8 is 20=2x+8=20

Hence, the equation for the statement "two times a number x increased by 8 is 20" is 2x+8=20.

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tia_tia [17]2 years ago

5 0

Considering the definition of equation, the equation that represents the statement "Two times a number x increased by 8 is 20" is: 2x + 8= 20

<h3>Definition of equation</h3>

An equation is the equality existing between two algebraic expressions connected through the equals sign in which one or more unknown values, called unknowns, appear in addition to certain known data.

The unknown values represents the number (or numbers), if any, that make the equality true. This unknown number is the solution of the equation.

Considering that:

"Twice' simply means "multiply by 2".
"increased by 8" means "added or plus 8".

the equation that represents the statement "Two times a number x increased by 8 is 20" is:

2x + 8= 20

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13 + {16 + 2 -[25 + 45) x 3] + 9}

Goshia [24]

Answer: -170

Concept:

When encountering questions that require multiple steps of the calculation, it is suggested to follow the PEMDAS.

<u>P</u>arenthesis
<u>E</u>xponents
<u>M</u>ultiplication
<u>D</u>ivision
<u>A</u>ddition
<u>S</u>ubtraction

Solve:

**Disclaimer** I assume that it is supposed to be (25 + 45). If it was, then you may refer to my answer. If the ")" after 45 is just a typo, you may point it out and I will redo it.

<u>Given expression</u>

13 + {16 + 2 - [(25 + 45) × 3] + 9}

<u>Do the parenthesis of the inner most</u>

=13 + {16 + 2 - [70 × 3] + 9}

=13 + {16 + 2 - 210 + 9}

<u>Do addition first, then subtraction</u>

=13 + {18 - 210 + 9}

=13 + {27 - 210}

=13 - 183

=-170

Hope this helps!! :)

Please let me know if you have any questions

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3 years ago

The proportion of dissolved substances in seawater is expressed as 0/00, which is the same as?

finlep [7]

The proportion of dissolved substances in seawater is expressed as 0/00, which is the same as parts per hundred.

Majority of the explanations for ratio and proportion use fractions. A ratio is a fraction that is expressed as a:b, but a proportion says that two ratios are equal. In this case, a and b can be any two integers. The foundation for understanding the numerous concepts in mathematics and science is provided by the two key notions of ratio and proportion.

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2 years ago

Picture shown!

True [87]

Answer:

$slope = \frac{y2 - y1}{x2 - x1}$