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2 years ago

Which equation shows the commutative property of addition?

Mathematics

2 answers:

Romashka [77]2 years ago

5 0

Answer:

D. m+n=n+m

Step-by-step explanation:

Communitive property of addition just changes the order of the addend and the sum stays the same.

lisabon 2012 [21]2 years ago

4 0

Answer:

We learned that the commutative property of addition tells us numbers can be added in any order and you will still get the same answer. The formula for this property is a + b = b + a. For example, adding 1 + 2 or 2 + 1 will give us the same answer according to the commutative property of addition.

Step-by-step explanation:

Commutative property of addition: Changing the order of addends does not change the sum. For example, 4 + 2 = 2 + 4 4 + 2 = 2 + 4 4+2=2+44, plus, 2, equals, 2, plus, 4. Associative property of addition: Changing the grouping of addends does not change the sum.

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(-3)+(-5) What are the signs and places

Triss [41]

What do the places mean? I’d say the signs are negative since both values are (-3) and (-5), but i don’t know what you mean by placed - if they were placed in a number line, it would go 3 and 5 values left or down.

3 0

3 years ago

The value of a car is $20,000. It loses 10.7% of its value every year . Find the approximate monthly decrease in value . Round y

jenyasd209 [6]

Answer:

$178.3

Step-by-step explanation:

The value of a car is $20,000

The car loses 10.7% of its value yearly

Since there are 12 months in a year then 10.7% can be represented as

10.7%/12

= 0.8916%

Therefore the approximate monthly decrease in value can be calculated as follows

= $20,000×0.8916/100

= $20,000×0.008916

= $178.3

Hence the approximate monthly decrease in value is $178.3

7 0

3 years ago

I need help with these 2 math problems 1) -3 3/8 x 6= 2) 7/9 x 6=

earnstyle [38]

1) -34 which is very simple
2) 4 2/3

6 0

3 years ago

Read 2 more answers

Write a number with three decimal places greater than 4.74 and less than 4.75

padilas [110]

4.741

4.742

Really, you could stick any digit from 1-9 at the end of 4.74 to create your answer.

7 0

3 years ago

Suppose that the weights of passengers on a flight to Greenland on Frigid Aire Lines are normal with mean 175 pounds and standar

Natali5045456 [20]

Answer:

The minimum weight for a passenger who outweighs at least 90% of the other passengers is 203.16 pounds

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 175, \sigma = 22$