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uysha [10]
3 years ago
15

Which equation shows the commutative property of addition?

Mathematics
2 answers:
evablogger [386]3 years ago
8 0
It's not B because a n(n) is always times..
It's not C because that's an Associative property..
And it is not D because that is an Identity property..
So your answer is A.

oksian1 [2.3K]3 years ago
5 0

Answer:

The equation shows the commutative property of addition is  4 +3 = 3 + 4 .

Option (A) is correct.

Step-by-step explanation:

Commutative property of addition

The commutative property for addition states that

a + b = b + a .

Where a, b are any number.

thus

this above condition is satisfied by equation

4 + 3 = 3 + 4

7 = 7

Therefore Option (A) is correct.


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The population of a town increased from 3500 in 2005 to 5600 in 2009. Find the absolute and relative (percent) increase.
Ket [755]

Answer:

Absolute increase in population will be 2100

And percentage increase will be 60 %

Step-by-step explanation:

We have given population in 2005 is 3500

And population in 2009 is 5600

So absolute increase in population = 5600-3500 = 2100

We have to find the percentage increase in population

So relative percentage increase in population will be \frac{2100}{3500}\times 100=60 %

So population will increase by 60 %

6 0
3 years ago
A businessman was comparing his company's profits for two consecutive months. In November, n, were 0.04 thousand dollars more th
Firdavs [7]
N and d are both numbers of thousands of dollars.
Thus, if n = 1, that means $1000.

Here n = d + 0.4.
Note that in C, n+0.04=n is completely wrong.
Similarly, in D, d = 0.04 = n is completely wrong.
The "combined profit amount" for Nov. and Dec. is n + d = 3.15.

Only A matches this info.  Your answer is A.
5 0
3 years ago
What is the standard form of 0.00849​
adelina 88 [10]

Answer:

8.49 × 10⁻³

Explanation:

Standard form of a number: A. × 10ᵇ

(where 'A' is the number, b is the exponent over 10)

For the number "0.00849​", move the decimal point 3 places right so the exponent of 10 is -3.

Standard form: 8.49 × 10⁻³

Other examples of standard/scientific forms are:   standard forms

i) 0.043, move the decimal point 2 places right = 4.3 × 10⁻²

ii) 4030, move the decimal point 3 places left = 4.03 × 10³

7 0
1 year ago
How do I factorise an expression
ololo11 [35]
It factorises to -
4(x+6)

3 0
2 years ago
Answer both please, the topic is linear inequalities, and please explain it to me.
Bogdan [553]
<u>Question 1 solution:</u>
You have two unknowns here:

Let the Water current speed = W

Let Rita's average speed = R

We are given <em>two </em>situations, where we can form <em>two equations</em>, and therefore solve for the <em>two unknowns, W, R</em>:

Part 1)  W→ , R←(against current, upstream) 
If Rita is paddling at 2mi/hr against the current, this means that the current is trying to slow her down. If you look at the direction of the water, it is "opposing" Rita, it is "opposite", therefore, our equation must have a negative sign for water<span>:  

</span>R–W=2  - equation 1

Part 2)  W→ , R<span>→</span>(with current)
Therefore, R+W=3  - equation 2

From equation 1, W=R-2, 
Substitute into equation 2.
R+(R–2)=3
2R=5
R=5/2mi/hr

So when W=0 (still), R=5/2mi/hr

Finding the water speed using the same rearranging and substituting process:

1...               R=2+W
2...  (2+W)+W=3
                 2W=1
                   W=1/2mi/hr
 
7 0
3 years ago
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