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1 year ago

The cube of the sum of a number and 3

Mathematics

1 answer:

Radda [10]1 year ago

8 0

The expression for the cube of the sum of a number and 3 is (x+3)³

<h3>What are algebraic expressions?</h3>

Algebraic expressions are simply defined as arithmetic expressions made up of variables, terms, coefficients, factors and constants

They may also be known to consist of certain mathematical operations, such as;

Parentheses
Addition
Subtraction
Division
Bracket
Multiplication, etc

Based on the information given, we have;

cube of the sum of a number and 3

Let the number be x

We have the expression to be;

x + 3

Find the cube

(x+3)³

Hence, the expression is (x+3)³

Learn more about algebraic expressions here:

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The complete question is;

Write the expression for The cube of the sum of a number and 3

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3 years ago

Which expression equals a number that is NOT a rational number?

rewona [7]

$\frac{3\pi.3^3}{7}$ is not included as a rational number !

Step-by-step explanation:

Here we have , following expressions & we need to identify which of the following is not a rational number . Let's find out:

We know that , Rational Number : A number which can be expressed in form of p/q , where q is not equal to zero !

Here Expressions are:

$\frac{3\pi . 3^3}{7\pi}$ :

Let's evaluate this expression

⇒ $\frac{3(\pi) ( 3^3)}{7(\pi)}$

⇒ $\frac{3^4}{7}$

Therefore , It is a rational number ! .

$\frac{-18}{5}$ :

Let's evaluate this expression

⇒ $\frac{-18}{5}$

Therefore , It is a rational number ! .

$\frac{5}{3-7-9}$ :

Let's evaluate this expression

⇒ $\frac{5}{3-16}$

⇒ $\frac{-5}{13}$

Therefore , It is a rational number ! .

$\frac{3\pi.3^3}{7}$ :

Let's evaluate this expression

⇒ $\frac{3\pi.3^3}{7}$

⇒ $\frac{\pi.3^4}{7}$

Therefore , It is not a rational number , as pi is included ! .

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