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s344n2d4d5 [400]
3 years ago
14

What is the property of 21 times 9 = 9 times 21

Mathematics
2 answers:
zaharov [31]3 years ago
6 0
21 x 9 = 9 x 21 is the commutative property.
pantera1 [17]3 years ago
6 0

Answer:

communitive? I learned this years ago but I think this is correct

Step-by-step explanation:

You might be interested in
On Dan's eReader, 2/3 of the books are fiction. Of the fiction books,4/5 are mysteries. What fraction of the books on Dan's eRea
Nitella [24]

Answer:

Step-by-step explanation:

Let's take a real situation. Suppose he has 1500 books in total

2/3 of them are fiction. Of means multiply.

them = 1500

2/3 * 1500 = 3000/3 = 1000

Now of the one thousand fiction books 4/5 of them are mysteries.

4/5 * 1000 = 4000/5 = 800.

Now let's see what happens when we just do this by answering the question directly.

2/3 * 4/5 = 8/15 This has the meaning that 8 out of every 15 books = mysteries.

Try this on the 1500 books.

8/15 * 1500 = 9000/15 = 800. So the answers are the same and the answer the computer expects should be 8/15 or 0.533333333

Just to check, does 0.5333333 * 1500 = 800? Try it.

8 0
3 years ago
What are the next three numbers of the pattern? Plz answer quick and btw u will be marked brainliest
dimulka [17.4K]

1, 4, 9, 16, 25,... n^{2}

5 0
3 years ago
Read 2 more answers
Help, please.
scoray [572]

Answer:

d

Step-by-step explanation:

if am not wrong I think the answer is d the last one

3 0
3 years ago
I need help. I can't figure it out.
Finger [1]
You add the 3 and -1 and then devide 5 than when you put your answer dont forget the sqared. hope this help you.
5 0
3 years ago
Read 2 more answers
Please help me on this
Vadim26 [7]

Answer:

The answer is expression 4㏒w(x² - 6) - (1/3)㏒w(x² + 8) ⇒ 3rd answer

Step-by-step explanation:

* Lets revise some rules of the logarithmic functions  

- log(a^n) = n log(a)

-  log(a) + log(b) = log(ab) ⇒ vice versa  

- log(a) - log(b) = log(a/b)  ⇒ vice versa

* Lets solve the problem

- The expression is

 log_{w}\frac{(x^{2}-6)^{4}}{\sqrt[3]{x^{2}+8}}

∵ log(a/b) = log(a) - log(b)

∴ log_{w}(x^{2}-6)^{4}-log_{w}\sqrt[3]{x^{2}+8}

∵ ∛(x² + 8) can be written as (x² + 8)^(1/3)

∵ log(a^n) = n log(a)

∴ log_{w}(x^{2}-6)^{4}=4log_{w}(x^{2}-6)

∴ log_{w}\sqrt[3]{x^{2}+8}=\frac{1}{3} log_{w} (x^{2}+8)

∴ 4log_{w}(x^{2}-6)-\frac{1}{3}log_{w}(x^{2}+8)

* The answer is expression 4㏒w(x² - 6) - (1/3)㏒w(x² + 8)

6 0
3 years ago
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