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quester [9]
3 years ago
10

What is Commutative Property? I need help ASAP!! PLEASE HELP!!!!

Mathematics
2 answers:
Fudgin [204]3 years ago
7 0
The commutative propertyof addition says, "that you will get the same answer whether you are adding 1+2 or 2+1. this also works for 2 or more number."

I hope this helps!
eimsori [14]3 years ago
4 0

Commutative property states that in addition and multiplication changing the order of operands does not change the result.  Division and subtraction are not commutative.

We will see commutative property of addition by example. Let us take any two numbers like 5 and 3. Now let us add these numbers.

5+3=8

Now we will add these number by switching their order.  

3+5=8

We can see that changing order of our numbers has not affected our answer. We got 8 by either way.

5+3=3+8

Now we will see commutative property of multiplication. We will take the same numbers and multiply them.

5\times3=15

Now let us change order of our numbers.

3\times5=15

We have seen from our above examples that order doesn't matter in addition and multiplication of numbers, therefore, addition and multiplication of numbers are commutative operations.

Now let us see if this true for division and subtraction.

4-2=2

2-4=-2

We can see that 2\neq-2. As order matters in subtracting numbers, therefore, subtraction of numbers is not a commutative operation.

Now let us see an example if division is commutative or not.

\frac{4}{2} =2

\frac{2}{4} =\frac{1}{2}

We can see that 2\neq\frac{1}{2}. As order matters in multiplying numbers, therefore, multiplication of numbers is not a commutative operation.



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Which statement is true?<br> 5/8&gt;1\2 <br>5/8=1/2 <br>5/8&lt;1/2
Leokris [45]

Answer: 5/8>1/2

Step-by-step explanation:

First you must have a common denominator.

Change 1/2 to 4/8

(1/2 = 4/8)

Second:

5/8   ?   4/8

5/8 is greater than 1/4  (aka 1/2)

so

5/8 > 1/2

7 0
3 years ago
Find LCM of:<br><br>x2 - 9, 3x3 + 81​
VikaD [51]

Answer:

\boxed{\pink{\sf (x + 3) \ is\ the \ LCM . }}

Step-by-step explanation:

Given two expressions ,

\qquad (1)\: x^2 - 9 \\\\ \qquad (2)\:3x^3 + 81

And , we need to find the LCM , that is lowest common factor . So , let's factorise them seperately .

<u>Factorising</u><u> </u><u>x²</u><u> </u><u>-</u><u> </u><u>9</u><u> </u><u>:</u><u>-</u><u> </u>

= x^2 - 9 \\\\= x^2 - 3^2 \\\\ \red{= (x+3)(x-3)} \qquad\bf [Using \ a^2-b^2 = (a+b)(a-b) ]

<u>Factorising</u><u> </u><u>3x</u><u>³</u><u> </u><u>+</u><u> </u><u>8</u><u>1</u><u> </u>

= 3x^3 + 81\\\\= 3(x^3+27) \\\\= 3( x^3+27) \\\\ = 3(x^3+3^3) \\\\ \red{= 3 [ (x+3)(x^2+9-3x) ] } \qquad \bf{[ Using \ a^3+b^3=(a+b)(a^2+b^2-ab) ] }

Hence we can see that (x+3) is common factor in both expressions.

<u>Hence</u><u> </u><u>the</u><u> </u><u>LCM</u><u> </u><u>is</u><u> </u><u>(</u><u> </u><u>x</u><u>+</u><u>3</u><u> </u><u>)</u><u> </u><u>.</u>

8 0
2 years ago
What is the name of the eye burn that can occur within seconds?
grigory [225]
Th answer is a flash burn. Flash burns occur when exposed to ultra violet light rays (UV) and causes inflammation in the cornea of ur eye. 
7 0
3 years ago
If you know this you’re very smart!
Darya [45]

Answer:

Its B and its not that hard because im doing that rn lol but do you need me to explain?

Step-by-step explanation:

7 0
2 years ago
HELP PLEASE HARD MATH
NNADVOKAT [17]
So lets do it like this!
6/2 (1+2)=
^^^ = 3
Ok so now it is
3 (1+2) I guess we times next sorry if wrong.
     ^^^ = 3
we got 3 and three so lets times
3x3=
^^^=9

Your correct answer should be 9! Hope this helped!
6 0
3 years ago
Read 2 more answers
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