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nydimaria [60]
4 years ago
13

What does communitive property mean

Mathematics
1 answer:
madreJ [45]4 years ago
4 0
What you meant was the "commutative" property.

So we can say that when adding:

<em>"<u>Commutative</u> means that the order does not make any difference in the result."</em>

Example:

5 + 6 = 6 + 5

a + b = b + a

The commutative property does not hold for subtraction.

Example:

4 - 1 ≠ 1 - 4

a - b ≠ b - a

Ok, now does the commutative property hold true for multiplication?

2 x 3 = 3 x 2

2 x 3 x 4 = 4 x 3 x 2

Yes.

What about division?

12 ÷ 4 ≠ 4 ÷ 12

The commutative property does not hold for division.
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18 - 5 · 3 = ?<br><br> A: 3<br> B: 36<br> C: 39
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C 39

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3 years ago
Read 2 more answers
- 1/3 (9x - 27) = 15 what is the 2 step of this 2 step equation​
lilavasa [31]

Answer:

x= -2

Step-by-step explanation:

-1/3(9x-27)=15

Multiplying both sides by -3

9x-27=15×(-3)

9x-27=-45

Now

Add 27 to both sides

9x=-45+27

9x=-18

Divide both sides by 9

x= -2

4 0
3 years ago
Can I PLEASE get some help?
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7 0
3 years ago
The Jimenez family is bringing 12 packages of hamburger and hotdog buns to the neighborhood picnic. The hamburger buns cost $2.0
nordsb [41]

Answer:

The system of equations is x + y = 12 and 2x + 1.5y = 20

The number of packages of the hamburger is 4

The number of packages of the hotdog is 8

Step-by-step explanation:

Assume that they bringing x packages of hamburger y packages of hotdog

∵ x represents the number of packages of hamburger

∵ y represents the number of packages of hotdog

∵ Jimenez family is bringing 12 packages of hamburger and hotdog buns

∴ x + y = 12 ⇒ (1)

∵ The hamburger buns cost $2.00 per package

∵ The hot-dog buns cost $1.50 per package

∵ They spent $20 on the buns

∴ 2x + 1.5y = 20 ⇒ (2)

The system of equations is x + y = 12 and 2x + 1.5y = 20

Let us solve it to find x and y

→ Multiply equation (1) by -1.5 to make the coefficients of y equal in

   values and different in signs to eliminate it

∵ -1.5(x) + -1.5(y) = -1.5(12)

∴ -1.5x - 1.5y = -18 ⇒ (3)

→ Add equations (2) and (3)

∵ (2x + -1.5) + (1.5y + -1.5y) = (20 + -18)

∴ 0.5x = 2

→ Divide both sides by 0.5 to find x

∴ x = 4

→ Substitute the value of x in equation (1) or (2) to find y

∵ 4 + y = 12

→ Subtract 4 from both sides

∴ 4 - 4 + y = 12 - 4

∴ y = 8

∴ The number of packages of the hamburger is 4

∴ The number of packages of the hotdog is 8

7 0
3 years ago
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