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2 years ago

3s(4 + 6)2 is an example of

Mathematics

2 answers:

lyudmila [28]2 years ago

8 0

Answer:

A. An Algebraic Expression

Step-by-step explanation:

Since we have no equal sign in the problem, we know that it is an expression. An equation has an equal sign and another value so we can simplify to find the value of whatever variable we are working with. We also know that it is not anything numerical because we are working with variables. With this information we will see that the correct answer is A.

Best of Luck!

MrMuchimi2 years ago

3 0

Answer:

options A an algebraic expression

Step-by-step explanation:

please mark me brainleast

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Prove that root 7 is irrational by the method of contradiction

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$\sqrt7=\dfrac{a}{b}\\\\7=\dfrac{a^2}{b^2}\\\\a^2=7b^2$

This means that $a^2$ is divisible by 7, and therefore also $a$ is divisible by 7.

So, $a=7k$ where $k\in\mathbb{Z}$

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Analogically to $a^2=7b^2$ ------- $b^2$ is divisible by 7 and therefore so is $b$ .

But if both numbers $a$ and $b$ are divisible by 7, then $\text{gcd}(a,b)=7$ which contradicts our earlier assumption that $\text{gcd}(a,b)=1$ .

Therefore $\sqrt7$ is an irrational number.

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TiliK225 [7]

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Answer:

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Step-by-step explanation:

Hope I have helped.

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