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3 years ago

Which of the following sets is closed under multiplication?

Mathematics

2 answers:

andrezito [222]3 years ago

7 0

B. {1,2} because they are both whole numbers 0 is not one.

(Proof: Whole Numbers: This set is closed only under addition and multiplication. Integers: This set is closed only under addition, subtraction, and multiplication. Rational Numbers: This set is closed under addition, subtraction, multiplication, and division (with the exception of division by 0)"

velikii [3]3 years ago

7 0

Answer:

(o,1)

Step-by-step explanation:

i got my results back and it said that this was the correct answer

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How to calculate the height of an object using trigonometry

Harrizon [31]

Answer:

${a}^{2} + {b}^{2} = {c}^{2}$

Step-by-step explanation:

a is the height

b is the base

c is the hypotenuse

5 0

2 years ago

Read 2 more answers

Your teacher will grade your response for questions 21–23 to ensure you receive proper credit for your answer.

mario62 [17]

Answer:

(a) Arts take longer

(b) By 2/9 hours

Step-by-step explanation:

Given

Arts = four over nine hours

Maths = two over nine hours

Solving (a): Which takes longer?

First, represent both as fraction

$Arts = \frac{4}{9}\ hours$

$Maths = \frac{2}{9}\ hours$

Convert fraction to decimal

$Arts = \frac{4}{9}\ hours$

$Arts = 0.444\ hours$

$Maths = \frac{2}{9}\ hours$

$Maths = 0.222\ hours$

By comparison:

$0.444 > 0.222$

Hence, Arts take longer

Solving (b): How much longer?

To do this, we calculate the difference.

$Difference = Arts - Maths$

$Difference = \frac{4}{9} - \frac{2}{9}$

Take L.C.M

$Difference = \frac{4 - 2}{9}$

$Difference = \frac{2}{9}\ hours$

8 0

2 years ago

Translate into an Algebraic equation: The quotient of a number and 5

gavmur [86]

$\rule{300}{1}\\\dashrightarrow\large\blue\textsf{\textbf{\underline{Given question:-}}}$

<em>Translate into an algebraic equation:-</em>

<em>The quotient of a number and 5.</em>

<em />

<em /> $\dashrightarrow\large\blue\textsf{\textbf{\underline{Answer and how to solve:-}}}$

✳︎ First, the word "quotient" indicates that we divide.

Here, we have the quotient of a number and 5, so we divide the number by 5; let the number be d.

So the quotient of d and 5 looks as follows:-

$\bold{\dfrac{f}{5}}$

<h3>Good luck with your studies.</h3>

$\rule{300}{1}$

8 0

2 years ago

If anyone knows how to do this

iogann1982 [59]

Answer:

1) 47

2) 4

Step-by-step explanation:

Complimentary = 90 degrees

1) 43 + ? = 90

? = 47

2) 86 + ? = 90

? = 4

8 0

3 years ago

There is an outbuilding that has an area of 80 square feet. The rectangle on the blueprint that represents the outbuilding has a

Tanya [424]

Answer:

B) 4

Step-by-step explanation:

There is an outbuilding that has an area of 80 square feet. The rectangle on the blueprint that represents the outbuilding has an area of 20 square inches. If the actual outbuilding has a wall length of 10 feet, what is the length of that wall on the blueprint . A) 3 B) 4 C) 5 D) 6

The length of the wall on the blue print can be calculated as:

20 square feet ÷ 5

= 4 feet

8 0

2 years ago