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3 years ago

6

Divide. Give the quotient and remainder. 2831 divided by 25

1 answer:

andrew11 [14]3 years ago

6 0

Answer:

113 R 6

Step-by-step explanation:

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Daniel [21]

Answer:

CHEESE

Step-by-step explanation:

CHEESE IS ALWAYS THE ANSWER!!!

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3 years ago

Read 2 more answers

A relation is a function if _____.

valentina_108 [34]

... <span>exactly one output for each input

This is an important concept; be certain that you understand it.

</span>

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3 years ago

A certain forest covers an area of 4300 km2 . suppose that each year this area decreases by 3.25% . what will the area be after

Gemiola [76]

A =P(1-3.25%)⁸

A= 3,301.23 km²

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3 years ago

What is 1986÷7 please help me

sertanlavr [38]

Step 1. Set up long division

_______
7| 1 9 8 6

Step 2. <span>Calculate 19 ÷ 7, which is 2 with a remainder of 5.

2
</span>  _______
7| 1 9 8 6
1 4
_________
5
  Step 3. Bring down 8, so that 58 is large enough to be divided by 7.

2
  _______
7| 1 9 8 6
  1 4
_________
5 8

Step 4. <span>Calculate 58 ÷ 7, which is 8 with a remainder of 2.

</span> 2 8
  _______
7| 1 9 8 6
  1 4
_________
5 8
5 6
_________
2

Step 5. <span>Bring down 6, so that 26 is large enough to be divided by 7.

</span>   2 8
  _______
7| 1 9 8 6
  1 4
_________
5 8
5 6
_______
2 6

Step 6. Calculate 26 ÷ 7, which is 3 with a remainder of 5.

2 8 3
  _______
7| 1 9 8 6
  1 4
_________
5 8
5 6
_______
2 6
2 1
______
5

Step 7. <span>Therefore, 1986 ÷ 7 = 283 with a remainder of 5.

823 With a remainder of 5

Done!

</span><span>Decimal Form If Needed: 283.714286</span>

6 0

3 years ago

Let A be a set of numbers.

LUCKY_DIMON [66]

Answer:

a. closed under addition and multiplication

b. not closed under addition but closed under multiplication.

c. not closed under addition and multiplication

d. closed under addition and multiplication

e. not closed under addition but closed under multiplication

Step-by-step explanation:

a.

Let A be a set of all integers divisible by 5.

Let $x,y$ ∈A such that $x=5m\,,\,y=5n$

Find $x+y,xy$

$x+y=5m+5n=5(m+n)$

So, $x+y$ is divisible by 5.

$xy=(5m)(5n)=25mn=5(5mn)$

So,

$xy$ is divisible by 5.

Therefore, A is closed under addition and multiplication.

b.

Let A = { 2n +1 | n ∈ Z}

Let $x,y$ ∈A such that $x=2m+1\,,\,y=2n+1$ where m, n ∈ Z.

Find $x+y,xy$

$x+y=2m+1+2n+1=2m+2n+2=2(m+n+1)$

So,

$x+y$ ∉ A

$xy=(2m+1)(2n+1)=4mn+2m+2n+1=2(2mn+m+n)+1$

So,

$xy$ ∈ A

Therefore, A is not closed under addition but A is closed under multiplication.

c.

$Let A=\{2,5,8,11,14,...\}$

Let $x=2,y=5$ but $x+y=2+5=7$ ∉A

Also,

$xy=2(5)=10$ ∉A

Therefore, A is not closed under addition and multiplication.

d.

Let A = { 17n: n∈Z}

Let $x,y$ ∈ A such that $x=17n,y=17m$

Find x + y and xy

$x+y=17n+17m=17(n+m)$

$xy=(17m)(17n)=289mn=17(17mn)$

So,

$x+y,xy$ ∈ A

Therefore, A is closed under addition and multiplication.

e.

Let A be the set of nonzero real numbers.

Let $x,y$ ∈ A such that $x=-1,y=1$

Find x + y

$x+y=-1+1=0$

So,

$x+y$ ∈ A

Also, if x and y are two nonzero real numbers then xy is also a non-zero real number.

Therefore, A is not closed under addition but A is closed under multiplication.

4 0

3 years ago