All categories

4 years ago

What is the Commutative property of addition

Mathematics

2 answers:

kvasek [131]4 years ago

8 0

The Commutative property of addition states that you can switch or "commute" the numbers around in an addition problem and still get the same sum.

For example: 3+2=6 is the same as 2+3=6.

hoa [83]4 years ago

7 0

The commutative property of addition says that changing the order of the addends does not change the sum. Let's look at an example.

2 + 3 = 3 + 2

The statement shown above demonstrates the commutative property of addition.

You might be interested in

In DEF, C is the centroid if DM=45 , find DC and CM DC= ? Units

IgorC [24]

Answer:

DC=30

CM=15

Step-by-step explanation:

Given

Triangle DEF with C centroid

DM=45 (length of median)

centroid divides median in the ratio 2:1(larger side at vertex)

⇒

DC $=\frac{2}{3} \times DM=\frac{2}{3} \times 45= 2\times 15=30$

⇒DC=30

DC+ CM=DM

30+CM=45

⇒CM=15

7 0

3 years ago

dad planted a four year old maple tree in the front yard the apple tree in the backyard is 5 times as old as the maple tree the

RUDIKE [14]

the apple tree is 20 and the oak tree is 40

hopes this helps,

Xeno

4 0

4 years ago

Please help me anyone

frez [133]

Answer:

8units

Step-by-step explanation:

8 0

3 years ago

Saul is playing a game using a wheel divided

Art [367]

Using the binomial distribution, it is found that there is a 0.25 = 25% probability he will land on A on the first spin and A and the second.

For each spin, there are only two possible outcomes, either it lands on Sector A, or it does not. The results of each spin are independent, hence, the binomial distribution is used to solve this question.

<h3>What is the binomial distribution formula?</h3>

The formula is:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

In this problem, we have that:

The sectors are equal, which means that it is equally as likely to land on each, hence $p = \frac{1}{2} = 0.5$ .

Saul will spin the wheel twice, hence $n = 2$ .

The probability that both land on A is P(X = 2), hence:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 2) = C_{2,2}.(0.5)^{2}.(0.5)^{0} = 0.25$

0.25 = 25% probability he will land on A on the first spin and A and the second.

You can learn more about the binomial distribution at brainly.com/question/24863377

4 0

2 years ago

Eric ran from school to the town monument and back again. On his way to the monument, he ran at 10kph and went back to school at

Aloiza [94]

Answer:

Distance = 10 km

Step-by-step explanation:

Let x be the number of hours taken from school to town and y be the number of hours taken back to the school

Then distance covered during first trip would be 10x (distance = speed*time) and during the second trip would be 8y. Both distances are equal.

=> 10x = 8y

Dividing both sides by 2

=> 5x = 4y

=> 5x-4y = 0 ------------------(1)

The total time for both the trips is:

=> x + y = 2.25 -------------------(2)

Multiplying eq (2) by 5

=> 5x+5y = 11.25 ---------------(3)

Subtacting (3) from (1)

=> 5x-4y-5x-5y = 0-11.25

=> -4y-5y = -11.25

=> -9y = -11.25

Dividing both sides by -9

=> y = 1.25 hrs

Putting in (2)

=> x + 1.25 = 2.25

=> x = 2.25 - 1.25

=> x = 1 hr

Now, Calculating the Distance

=> Distance = 10x

=> 10 ( 1 )

=> Distance = 10 km

3 0

3 years ago