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Artyom0805 [142]
3 years ago
7

Which of the following sets is closed under subtraction?

Mathematics
2 answers:
Svetach [21]3 years ago
6 0

Answer:

A

Step-by-step explanation:

pashok25 [27]3 years ago
3 0

Answer:

  A. Integers

Step-by-step explanation:

Subtraction of whole or natural numbers can result in a negative number that is not in the set. Subtraction of irrational numbers can result in a rational number (√2 -√2 = 0, for example).

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51.24 * 7.18 round each factor to its greatest place
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Answer:by mathatube

Step-by-step explanation:

What does greatest place value mean?

THE GREATEST OR HIGHEST PLACE VALUE IS THE DIGIT FARTHEST TO THE LEFT IN A NUMBER. IT COULD BE ANY NUMBER EXCEPT ZERO.

LOOK AT THE NUMBER 3654. The 3 is the greatest or highest place value number because it is the digit farthest to the left. The 3 is in the thousands place.

Look at the number again with a zero. 03654. The 3 is still the largest place value number because zero does not count.

Following the rules for Rounding

After finding the greatest place value number you can use the rules for rounding and round the number.

Example 1: round 24,356 the greatest place value.

Look to the right of the number in the ten

thousands place. It's a 4, so Round down.

24,356 is rounded to 20,000 because the highest

place value of that number is in the ten thousand

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Example-2: round 8,636 to the greatest place value.

8 is the number farthest to the left so it is the greatest place value number and it is in the thousands place

So look to the right of the number in the thousands

place. It's a 6, so round up.

8,636 is rounded up to 9,000 because the highest                                         place value of that number is the 8 in the thousands place.

6 0
3 years ago
Simplify (4.5)(5)(-2).<br> 45<br> 4.5<br> -4.5<br> -45
zalisa [80]

Answer:

-45

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Solve the system of equations.{y=2x−64x−2y=14{y=2x−64x−2y=14use the substitution method.the solution is (4, 14)(4, 14).the solut
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I did this test and failed. But when I reviewed it showed me the right answers... so here is the answer: C. There is no solution. 
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Please help with both questions
Y_Kistochka [10]
5: integer 6: real number
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3 years ago
Why is 12 inches 1 foot a conversion factor ?
Alinara [238K]

I have no better answer than simply, because there are 12 inches in a foot.

By definition a conversion factor is one unit being used to express a group or multiple of another unit. Just like how there are 12 of anything in one dozen. 100 years in one century. 365 days in one year. 100 centimeters in a meter. 4 quarts in one gallon. 10 dimes in one dollar. They are equal to each other and, thus, can be used as conversion factors.

3 0
4 years ago
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