MATHEMATICS MIDDLE SCHOOL

Given sample set A= {1,2,3,4,5} how many items are in the complement of set B if set B= all numbers greater than 2? OPTIONS : 3 , 5, 2 , or 4Just stuck on this one question.

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

It sounds like we are pretending A is the universe. The only numbers in our world are 1,2,3,4, and 5.

You are given B is all numbers greater than 2.

The complement of B would all the elements not listed in B.

The elements in B are 3,4, and 5, since we are looking for numbers greater than 2 in our world of numbers above.

The elements not in B are 1 and 2.

So B complement is {1,2}.

There are 2 elements in our set for B complement. The elements that were counted were just the element 1 and the element 2.

Answer 2

Answer:

There are 2 items in the complement of set B. The correct answer is:2

The complement of set B, denoted as B', contains all the elements that are NOT in set B.

Set B consists of all numbers greater than 2.

Therefore, the elements in B' will be all the numbers that are NOT greater than 2, which means all numbers less than or equal to 2.

Set B' = {1, 2}

So, there are 2 items in the complement of set B.

The correct answer is:2

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Answers

Step-by-step explanation:

multiply second equation by -2

-2 × (x+y) = 3➡ -2x - 2y = -6 now add up both equations

3x + 2y - 2x-2y = 5-6 ➡x = -1 (-2y eliminated +2y)

now use the value we found for x in the second equation to find the value of y

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Which of the following statements contains a quotient?A. 42 ÷ 6 = 7
B. 7 × 6 = 42
C. 7 + 6 = 13
D. 7 – 6 = 1

Answers

A.
Reason: You use quotients in division and 42 divided by 6 = 7 uses division.
Hint: 7 is the quotient, 42 is the dividend, and 6 is the divisor.
Quotient: the answer or result (only used when dividing)
Divisor: the number that u divide by.
Dividend: the amount that you want to divide up.

A. contains the quotient, because quotients are inly in division problems.

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