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3 years ago

Which equation illustrates the commutative property of addition?

Mathematics

2 answers:

lbvjy [14]3 years ago

3 0

commutative property of addition
answer is

A. 12 + 6 + 15 = 12 + 15 + 6

Arisa [49]3 years ago

3 0

Commutative property means that you can rewrite the equation in a different order. So for example, if I have 3 + 8 + 5 I can rewrite it as 5 + 3 + 8 or 8 + 5 + 3 and so on and so forth. So, we must go over all the options to narrow it down. It isn't B or C, So lets look at D. D shows you 12 + 6 + 15 = 12 + 6 + 15 this is the wrong answer because it does not rewrite the equation. It just repeats itself so lets take a look at option A. A says 12 + 6 + 15 = 12 + 15 + 6 this is the correct answer because it rewrote the equation in a different order but they are still the same numbers.
So the correct answer is
A) 12 + 6 + 15 = 12 + 15 + 6

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Calculate the area of the shape below.

Vsevolod [243]

Answer:

24ft²

Step-by-step explanation:

divide up the shape:

big triangle:

(looking for base)

9.8²= 4² + b²

b = 8.95ft

(finding area)

0.5*8.95*4 = 17.9ft²

small triangle:

(looking for base)

12-8.95=3.05ft

(finding area)

0.5*3.05*4 = 6.1ft²

Whole Shape:

17.9+6.1 = 24ft²

3 0

3 years ago

The distance from the Earth to Saturn averages 886 million (886,000,000) miles. Write this number in scientific notation.

kiruha [24]

Answer:

8.86 x 10^8

Step-by-step explanation:

Scientific notation means that you represent the standard form of a number like this:

number less than ten x 10 to the ___ power

In standard form, the decimal point is at the end of 886,000,000.

You have to move the decimal point to the left until it creates a number less than 10, but greater than 1:

8.86,000,000

You count how many decimal places you moved it. In this case, it is 8.

So your answer becomes 8.86 x 10^8

7 0

3 years ago

Describe and correct the error made in finding the product. Please explain what's wrong

qaws [65]

Okay, it's wrong because they forgot to do -2 times 3x.
The correct answer is $3^{2}$ -2x-8
Hope i got is correct!

5 0

3 years ago

At the north campus of a performing arts schools, 10% of the students are music majors. At the south campus, 70% of the students

ad-work [718]

Answer:

10000

Step-by-step explanation:

3 0

3 years ago

Suppose you have a tablet with a capacity of 35 gigabytes. for a plain text book, one byte typically corresponds to one charact

steposvetlana [31]

The first thing we must keep in mind is the following unit conversion:
$1 gigabytes = 1 * 10 ^ 9 bytes
$
We have then that for 35 gigabytes:
$35 * (1 * 10 ^ 9) = 35 * 10 ^ 9 bytes
$

Part A:
For this case we make the following rule of three:
2000 bytes --------------> 1 page
35*10^9 bytes ----------> x
From here, we clear x:
$x = (35 * 10 ^ 9) / (2000)

x = 17500000 pages$

Part B:
Then, the number of 500-page books is:
$n = (17500000) / (500)

n = 35000

$

5 0

3 years ago