Which of the sets shown includes the elements of set z that are both odd numbers and multiples of 7? z = {−21, −14, −7, 0, 7, 14, 21}

The set that has elements of set Z that are odd numbers and are also a multiple of 7 is:

{−21, −7, 7, 21}.

Let's recall what an odd number that is a multiple of 7 is:

Z = {-21, -14, -7, 0, 7, 14, 21}

In the set given we have the following:

However, -21, -7, 7, and 21 are all both multiples of 7 and also are odd numbers.

Therefore, the set that has elements of set Z that are both odd numbers and are also multiples of 7 is:

{−21, −7, 7, 21}

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Step-by-step explanation:

Choices for this question are

A. {−21, 21}

B. {−21, −7, 7, 21}

C. {−14, 0, 14}

D. {−21, −14, −7}

We need to pick a set that has elements of Z and they are odd number and multiples of 7.

Therefore, the right answer is

B. {−21, −7, 7, 21}

Because, this set includes all elements of set Z that are odds and multiples of 7.

The choice A doesn't include -7 and 7, which has to.

Choice C and D includes even numbers.

its 69.420

step-by-step explanation:

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.