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2 years ago

What is greater 0.5 or 2/4

Mathematics

1 answer:

victus00 [196]2 years ago

6 0

Answer:

neither one is greater

Step-by-step explanation:

Because 0.5 as a fraction is 1/2 and 2/4 simplified is also 1/2 so they are equal

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Multiply: 85 x 4 = 340

Ghella [55]

Answer:

Yes

Step-by-step explanation:

85 x 4 is equal to 340.

4 0

2 years ago

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What is an equivalent expression to 48x - 30?

mars1129 [50]

An equivalent expression would be 6(8x - 5)

3 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:

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.

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.

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

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.

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.

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

2 years ago

3/unknow ÷5=1/10 what in the unknown?

saul85 [17]

3/x÷5=1/10
3÷5=1/10*x
6/10=1/10*x
6=x

5 0

3 years ago

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calvin paints pictures and sells them at art shows.he charges $56.25 for a large paiting.he charges $25.80 for a small pating.la

Orlov [11]

Calvin made a total of $414.90

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3 years ago