Which sets of numbers are closed under division? Choose all answers that are correct. A. rational numbers B. integers C. {–1, 0, 1} D. whole numbers

Answers

Answer 1
Answer: The answer to your question is A. rational numbers.

Rational numbers are closed under any set of operations.

Integers are not closed under division because 1/2 is not an integer.

The set {-1, 0, 1} is also not closed under division because -1/5 does not fall in that set.

Whole numbers are not closed under division because 5/3 will produce a number that is not a whole integer.

Your answer is A. rational numbers.
Answer 2
Answer: A. Rational numbers are closed under division.

If you divide a rational number, it will remain a rational number. If you divide an integer or a whole number, there is a chance that the new resulting number will not be an integer or a whole number.

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The dot plot below shows how many laps each student in Coach Toni's gym class ran one day.What is the mean absolute deviation of the data set shown?A. 30B. 12.5C. 5D. 7
3 equivalent ratios to 8 over 10

write two different fraction names for the dot on the number line. you may use halves, thirds,fourths,fifths,sixth eighths,or tenths

Answers

4 the first one it would be 1/5 or 2/10 and the second one would be 4/5 or 12/15 Ana the third one would be 3/or 1/2

Can a quadrilateral have 4 obese angles.

Answers


Well, first of all, if we're talking about angles, then they can be "obtuse"
angles, but they can't be obese angles. 

An obtuse angle is one that's bigger then 90° but smaller than 180°.

Aquadrilateral can have as many as 3 obtuse angles. But not 4, because
all 4 angles have to add up to 360 degrees.

So they could be like  91°,  91°,  91°, and  87° (3 obtuse angles),
or  175°,  100°,  80°, and  5° (2 obtuse angles).

Which word is used to name the bold number? 18 – z = 10

A.
difference

B.
factor

C.
minuend

D.
subtrahend

Answers

The bold number (10) is the difference because it is calculated by subtracting two numbers.

The value of the solid's surface area is equal to the value of the solid's volume. Find the value of x.

Answers

Volume = (l * w * h) or (11 * 3 * x)  which will equal surface area.  Volume is 33x for now

Surface Area = 2 (x * 11) + 2 (x * 3) + 2 (11 * 3)

Set Volume equal to surface area. I simplified SA already.
33x = 22x + 6x + 66

33x - 28x = 66

5x = 66

x = 66/5 or 13.2

The group wants to leave a 15% tip and the bill 24.20 how much do they leave

Answers

Answer:

27.83

Step-by-step explanation:.15(24.20)=3.63

3.63+24.20+27.83

Final answer:

To calculate a 15% tip on a $24.20 bill, convert 15% to a decimal (0.15), and multiply this by the total bill. The tip should be $3.63.

Explanation:

The concept behind leaving a tip is to provide payment that is a certain percentage of the total bill. In your query, you want to leave a 15% tip on a bill of $24.20. To figure out how much the tip would be, you would multiply the total bill by the tip percentage.

First, you need to convert the tip percentage into a decimal form. To do that, you divide the percentage by 100. So 15 divided by 100 is 0.15.

Next, you multiply the total bill by this decimal. In this case, 24.2 (the total bill) multiplied by 0.15 equals 3.63. Thus, the tip they should leave is $3.63.

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What is the percent of increase from 50 to 90

Answers

A percentage is a way to describe a part of a whole. The percentage of increase from 50 to 90 is 80%.

What are Percentages?

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

The percent of increase from 50 to 90 is,

= (90-50)/50 × 100%

= 40/50 × 100%

= 0.80 × 100%

= 80%

Hence, the percentage of increase from 50 to 90 is 80%.

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The raw increase from 50 to 90 is 40.
So the question is how much of 50 is 40?

Let's divide the two: 40/50 = .8

So 40 is .8 of 50. But what is .8 in percentage form?

.8 x 100 = 80%

So the move from 50 to 90 is an 80% increase.