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Sergeu [11.5K]
4 years ago
11

Which equation illustrates the commutative property of addition?

Mathematics
2 answers:
Stels [109]4 years ago
7 0
I believe the first one 12+ 6 + 15 = 12 + 15 + 6 is your answer, since you are just moving things around

hope this helps
Andru [333]4 years ago
6 0

Answer:

Option A. 12 + 6 + 15 = 12 + 15 + 6

Step-by-step explanation:

Cumulative property of addition says if there are three numbers a, b, c then

a + b + c = a + c + b

or a + b + c = c + b + a

Therefore, if three numbers are 12, 6, 15 then

equation that illustrates the commutative property of addition will be

12 + 6 + 15 = 12 + 15 + 6

Option A. 12 + 6 + 15 = 12 + 15 + 6 will be the correct option.

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On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite directior
bazaltina [42]

Answer:

b=-a

Step-by-step explanation:

Becaude when b is <u>positive</u> a will be <u>negative</u>

And when b is <u>negative</u> a will be <u>positive</u>.

8 0
3 years ago
Choose the equation that represents a line that passes through points (-1, 2) and (3, 1).
maw [93]

Answer:

The answer is x + 4y = 7

Equation of a line is y = mx + c

Where m is the slope

c is the y intercept

Slope of the line between the points

(-1, 2) and (3, 1) is

Slope = 1-2/ 3+1 = - 1/4

Equation of the line using point

(-1, 2) is

y - 2 = -1/4(x + 1)

4y - 8 = - x - 1

x + 4y = 7

Hope this helps you

7 0
3 years ago
The sum of three consecutive integers is 120. What are the integers.
bezimeni [28]
1. Three consecutive integers: x, x+1, x+2, such that:
x + x + 1 + x + 2 = 120
3 x + 3 = 120
3 x = 117
x = 117:3= 39
The integers are: 39,40,41.
2.
 x + x + 2 = x +1 +21
 2 x - x = 22 - 2
 x = 20
The integers are: 20,21,22.
3. Four consecutive even integers: x, x+2, x+4, x+6
4 ( x + x + 2 ) = 7 (x + 6 ) - 8
8 x + 8 = 7 x + 42 - 8
8 x - 7 x = 34 - 8
x = 26
The integers are: 26, 28, 30 , 32. 
6 0
3 years ago
What is the value of x? 6.75+3/8x=131/4<br> 1. 2 7/16<br> 2. 171/3<br> 3. 18 2/3<br> 4. 531/3
Arte-miy333 [17]

6.75+\frac{3}{8}x=13\frac{1}{4}\\\\ 6\frac{3}{4}+\frac{3}{8}x=13\frac{1}{4}\\\\ \frac{3}{8}x=13\frac{1}{4}-6\frac{3}{4}\\\\ \frac{3}{8}x=12\frac{5}{4}-6\frac{3}{4}\\\\ \frac{3}{8}x=6\frac{2}{4}\\\\x=\frac{13}{2}\cdot\frac{8}{3}\\\\x=\frac{52}{3}\\\\ x=17\frac{1}{3}

4 0
4 years ago
An equilateral triangle has a perimeter of 21 and a side length of 2x - 3. Solve for x
scoray [572]

Answer:

x=3

Step-by-step explanation:

Because it is equilateral, all the sides are equal. so you can make your equation

3(2x-3)=21

Distribute the 3 throughout, giving you 6x-3=21

Subtract the 3 from both sides, and you are left with 6x=18

Divide 18 by 6 and you get 3.

4 0
4 years ago
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