Which property is demonstrated 9 * 3 * 4 = 4 * 3 * 9

Mathematics

1 answer:

mr_godi [17]3 years ago

4 0

The commutative property of multiplication.

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Ann rolls a 6 sided number cube and then chooses a card from a set numbered 1 through 9. What is the probability that she will r

Licemer1 [7]

5/9 to chose odd card, 3/6 to roll even number

6 0

3 years ago

The perimeter of a rectangular field is 168 feet. The field is 36 feet wide. How long is the field

Dmitriy789 [7]

To find the length, divide the peremiter by 2 and then subtract the width.

Length= Peremiter/2 - width
L = P/2 - W
L = 168/2 - 36
L = 84 - 36
L = 48

The length is 48

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3 years ago

What is the solution for the equation 3x + 0.3 = 3.3.

hoa [83]

Answer:

3x+0.3=3.3.

\ /

We move all terms to the left:

3x+0.3-(3.3.)=0

We add all the numbers together, and all the variables

3x+0.3-0=0

We add all the numbers together, and all the variables

3x+0.3=0

We move all terms containing x to the left, all other terms to the right

3x=-0.3

x=-0.3/3

/ \

*eliza*

3 0

3 years ago

Using Cramer’s Rule, what is the value of x in the system of linear equations below? x+3y=16 3x+y=8

alexdok [17]

Cramer's rule works as follows:
x+3y=16
3x+y=8
Then
x=Dx/D
y=Dy/D
where Dx,Dy,D are 2x2 matrices formed from of coefficients and right hand side.
D=
1 3
3 1
=1-9=-8
Dx=matrix D with first column replaced by the vector [16,8]=
16,3
8 1
=16-24
=-8

Dy=matrix D with second column replaced by the vector [16,8]=
1 16
3 8
=8-48
=-40

Therefore
x=-8/-8=1
y=--40/-8=5

Check:
x+3y=1+3(5)=16
3x+y=3(1)+5=8 ok.

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3 years ago

If the area of a square plot of land is 9 miles squared, what is the perimeter of this land?

tatyana61 [14]

Answer:

$\huge{ \fbox{ \sf{12 \: miles}}}$