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andre [41]
4 years ago
13

(6 + 7) + 8 = 6 + (7 + 8) which property of addition shows

Mathematics
1 answer:
Tcecarenko [31]4 years ago
4 0

Answer: Associative Property of Addition

Step-by-step explanation: The problem (6 + 7) + 8 = 6 + (7 + 8)

demonstrates the associative property of addition.

Notice that the addends, or the number we're adding,

are the same on both sides of the equals sign, 6 + 7 + 8.

The associative property of addition tells us that when we're adding more

than two numbers, the grouping of addends does not change the sum.

For example here, (6 + 7) gives us 13, and 14 + 8 gives us 21.

On the right side, (7 + 8) gives us 15, and 6 + 15 gives us 21.

So the sum is the same, regardless of which way we group the addends.

You might be interested in
What is the quotient 5/8 + 1/5?
Brums [2.3K]

Answer:

33/40

Step-by-step explanation:

cross multiply

5 x 5 = 25

8 x 1 = 8

25 + 8 = 33 (our numerator)

8 x 5 = 40 (our least common denominator)

6 0
3 years ago
In a classroom,there are 12 girls and 8 boys.What fraction of the students in class are girls?What percent of the class are girl
tekilochka [14]

Answer:

Step-by-step explanation:

Add the total number of students:

Boys: 8, + Girls: 12 = 20 students

\frac{12}{20} = \frac{6}{10} of the students are girls

6/10 also equates to 60%, which is the percent of girls in the class.

4 0
4 years ago
A class consists of 1/2 freshmen, 1/8 sophomores, and 1/8 juniors; the rest are seniors. What fraction of the class is seniors?
Firlakuza [10]

Answer:

2/8

Step-by-step explanation:

freshman=4/8

1/8 soph    1/8 jr

add all together u get 6/8

the rest is seniors so its 2/8

8 0
3 years ago
X = y - 3<br> 2x + y = 12<br> pls hurry i need badly
vfiekz [6]

\huge \colorbox{yellow}{Question}

<h3>x = y - 3</h3>

2x + y = 12

\huge \colorbox{yellow}{Answer}

x = y - 3 \: (equation \: 1)

2x + y = 12 \: (equation \: 2)

Substituting the value of x in

( equation 2)

2x + y = 12

2(y - 3) + y = 12

2y - 6 + y = 12

2y + y = 12 + 6

3y = 18

y = 18 \div 3

y = 6

Now we get y = 6

Substituting the value of y in

( equation 1 )

x = y - 3

x = 6 - 3

x = 3

Now we get x = 3

\huge \mathsf\red{Final \: Answer}

<h3>y = 6 </h3>

<h3>x = 3</h3>
5 0
3 years ago
of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled
Helga [31]

Answer:

20 people only buy dvds.

Step-by-step explanation:

There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:

people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds

people who only buy blu rays = 300 - 280 = 20

We can now calculate the amount of people who only buy dvds and that is:

people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)

people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people

3 0
3 years ago
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