Three friends share 2 sandwiches

Answers

Answer 1

Answer: 2 sandwiches/ 3 friends= 2/3 sandwich/friend

Each friend has 2/3 of the sandwich~

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12 times what equals 78

Answers

The value 78 is 12 times of number 6.

What is Algebra?

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In orderto determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

12 times what equals 78

let the number whose 12 times equals 78 be x then

12 x = 78

Divide both side by 12

12x /12 = 78/ 12

x = 6

Learn more about Algebra here:

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The answer is 6.5. This is because you have to divide 78 by 12 since it is a factor family.

A team played 25 games and won 17 of them. what percent did the team win?

Answers

17/25 = 0.68 = 68 percent

A team played 25 games and won 17 of them. What percent did the team win.

To find out what percent of games the team won, we can turn this into a fraction $(17)/(25)$ represents the number of games the team won and all the games they played in all.

17 ÷ 25 = 0.68

0.68 × 100 = 68%

Therefore, the team won 68% of the games they played.

Why is the product of a rational number and an irrational number irrational

Answers

Great question. Let's let r be a rational number and s be irrational. Note r has to be nonzero for this to work. In other words, it's not true that when we multiply zero, a rational number, by an irrational number like π we get an irrational number. We of course get zero.

The question is: why is the product

$p = rs$

irrational?

In math "why" questions are usually answered with an illuminating proof. Here the indirect proof is enlightening.

Suppose p was rational. Then

$s = \frac p r$

would be rational as well, being the ratio of two rational numbers, so ultimately the ratio of two integers.

But we're given that s is irrational so we have our contradiction and must conclude our assumption that p is rational is false, that is, we conclude p is irrational.

A proof by contradiction.

Let assume that the product of a rational number and an irrational number is rational.

Let $(a)/(b)$ and $(c)/(d)$ be rational numbers, where $a,b,c,d\in \mathbb{Z} \wedge b,d\not=0$ and $x$ an irrational number.

Then

$(a)/(b)\cdot x=(c)/(d)\nx=(bc)/(ad)$

Integers are closed under multiplication, therefore $bc$ and $ad$ are integers, making the number $x=(bc)/(ad)$ rational, which is contradictory with the earlier statement that $x$ is an irrational number.

What’s 85 divided by 9

Answers

Answer:

9 4/9

Step-by-step explanation:

9 x 9 = 81

you have 4 left over

place the 4 over 9 and that is your answer.

Answer:

9.4444444444444

Step-by-step explanation

85÷9= 9= 81 remainder 4

What is the average of something (mean or mode) I really need to know I forgot what the difference was ho

Answers

The mean is the average, or when you add all the numbers and divide it by how many numbers there are. And the mode is how frequently some number appears in a set of numbers. (For example- 1,1,1, 4,9,1,6,13,6 ---> the mode is one.)

The difference between mean and mode is that mode is the number that shows up most often and the mean is all the numbers add up then divided by how ever many numbers you added

In your own words define angle

Answers

An angle is two rays that lie on one plane, and both have the same endpoint.

It could look like this : ∠

they both have the same end point like this <

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Leena bought 14 yards of wire. How many inches of wire did she buy? (1 yard = 36 inches)?A.)36 in.B.)14 in.C.)360 in.D.)504 in.

32.2 - (-15.9) + 10 - 15.9 + 7.8