Which of the following gives an example of a set that is closed under multiplication? Choose all that apply.. . . . A. The product of a perfect cube and a perfect cube. B. The product of 0 and 0. C. The product of a whole number and a whole number. D. The product of a perfect square and a perfect square. . I think its b and c? help anyone...

Answers

Answer 1

Answer: All the four choices that are given in the question can be considered as as examples of a set that is closed under multiplication. The correct options among all the options that are given in the question are options "A", "B", "C" and "D". I hope that the answer has come to your help.

Answer 2

Answer:

The correct answer is:

Option: A , Option: B , Option: C , Option: D

Step-by-step explanation:

For a set to be closed under multiplication means if two elements are taken from that set then their multiplication must also belong to the same set.

The product of a perfect cube and a perfect cube.

Let a be a perfect cube of "m"

and b be a perfect cube of "n"

i.e.

$a=m^3\n\nand\n\nb=n^3$

Hence,

$a\cdot b=m^3\cdot n^3\n\ni.e.\n\na\cdot b=(mn)^3$

i.e.

$a\cdot b\ \text{is a perfect cube of mn}$

Hence, this set if closed under multiplication.

The product of 0 and 0.

when we take the product of 0 and 0 then the resultant is also zero.

Hence, this set is also closed under multiplication.

The product of a whole number and a whole number.

When we multiply a whole number to a whole number then the product is again a whole number.

This set is also closed under multiplication.

The product of a perfect square and a perfect square.

Let us take two elements of the set as x and y

i.e.

$x=a^2$

and

$y=b^2$

Hence,

$x\cdot y=a^2\cdot b^2\n\ni.e.\n\nx\cdot y=(ab)^2$

i.e.

$x\cdot y\ \text{is\ also\ a perfect\ square}$

Hence, the set is closed under multiplication.

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. A bag contains 7 orange beads, 3 red beads, and 5 white beads. What is the probability ofdrawing a white bead?

Answers

Answer:

Work shown below!

Step-by-step explanation:

White bead = $(5)/(15) =(1)/(3)$

Answer:

a 33.3333333% chance

Step-by-step explanation:

we do 7+3+5= 15 (the denominator)

and so the amount of white beads in total is 5/15

5÷15+100= 33.333333333 and so on percent

The ratio of girls to boys in Liza’s classroom is 5 to 4How many girls are in her classroom if there is a total of 27
students?

1. 12
2. 9
3. 54
4. 15

Answers

Answer is 4.) 15 girls.

If you go 27-5-4=18
18-5-4=9
9-5-4=0
so 5+5+5 (because it's 5 girls to 4 boys, only count the 5's) =15

Hope this helps! :)

Answer:

2.9

Step-by-step explanation:

Which of these statements is the best definition of a circle with center Point O?All points 1" from Point O

All points equidistant from Point O

All points a given distance from Point O in one plane

All points in the plane equidistant from Point O

Answers

All points in the plane equidistant from Point O

What is 7(9n − 3) − 7n
In order please
simply

Answers

Answer:

n= 3/8

Step-by-step explanation:

63n -21 -7n

63n - 7n = 21

56n = 21

n= 3/8 or 0.375

Answer: 56n-21

Step-by-step explanation:

7(9n-3)-7n Multiply parenthesis

63n-21-7n

SUBTRACT 63n-7n- 56n

Answer is: 56n-21

We leave 21 alone because it is a constant. We leave 56n alone because there is no like term with the variable n.

Find the total amount you will pay given an original price of $24.99 and tax rate of 5%.Enter the correct answer in the box.

Answers

Answer:The answer is 15.78

Step-by-step explanation:

Answer:

22.84 yep

Step-by-step explanation:

Ratio equal to the ratio given 12:7

Answers

To find an equal ratio, just multiply both sides of the ratio by the same number.

12:7
12(2):7(2)
24:14

12:7 = 24:14

as 12:7 = 12/7
therefore to get equivalents of a fraction we multiply the nominator and the denominator with a same no
let us take 2
then, 12x2/7x2 =24/14
your ans is 24/14

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