The following examples illustrate the commutative property of addition. 7 + 8 + 3 = 7 + 3 + 8 4.6 + 11.4 = 11.4 + 4.6 Study the examples, then choose the statement that best describes the property. a + b = a – b a + (b + c) = (a + b) + c
a + b = a + c
a + b = b + a

Answers

Answer 1

Answer:

Answer:

a + b = b + a

Step-by-step explanation:

The commutative property of addition allows us to "switch" values around an addition sign.

The first choice is a+b = a-b. The operation is changed; the problem is not just flipped around. This is not the commutative property.

The second choice is a+(b+c) = (a+b)+c. In this problem, the parentheses are switched; this is an example of the associative property, not the commutative property.

The third choice is a+b = a+c. The values that are added are changed, not flipped; this is not the commutative property.

The last choice is a+b = b+a. In this equation, the values are flipped around the addition symbol; this is the commutative property.

Answer 2

Answer:

Option D is our correct answer.

a + b = b + a.

Given,

commutative property of addition.

7 + 8 + 3 = 7 + 3 + 8

4.6 + 11.4 = 11.4 + 4.6

We have to choose from the option that describes the commutativeproperty of addition.

- a + b = a – b

- a + (b + c) = (a + b) + c

- a + b = a + c

- a + b = b + a

What is the commutative property of addition?

It states that if we change the order of the values with the addition the answer remains the same.

4 + 2 = 2 + 4.

We have,

a + b = a – b

Here the order is the same on both sides but the answer is not the same on both sides.

a + (b + c) = (a + b) + c

This is a property of associative.

a + b = a + c

Here the values are not the same on both sides.

a + b = b + a

The values are the same on both sides and the order is changed.

This is the commutative property of addition.

Thus a + b = b + a is our correct answer.

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1. Determine which ordered pair is a solution of y = –5x + 10. (1 point)(–15, 5)
(2, 0)
(–1, –5)
(3, 25)

2.on which of the following lines does the point (7, 1) lie
A. y - 5x = 4
B.y = x - 10
C. y=-4x + 3
D. y= -x + 8

3.Find the slope of the line through (-9, -10) & (-2, -5)
A -5/7
B 7/5
C 5/7
D -7/5

Answers

Answer to part 1 is C;
(2, 0)

Answer to part 2 is:
D. y= -x + 8

Answer to part 3:
C; 5/7

If f(x)=2x^2+5 square root (x-2) complete the following statement

Answers

If f(c)= 2x^ then it would be very equivalent

The variables y and x have a proportional relationship, and y = 9 when x = 2. What is the value of y when x = 3? Enter your answer in the box. y =

Answers

The value of Y = 13.5

Given that,

y and x have proportional relationship.
y = 9 when x= 2
We need to find the value of y, when X = 3.

According to the scenario, calculation of given data are as follows,

$(9)/(2) = (y)/(3)$

y = 27 $/$ 2

y = 13.5

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Answer:

x=3 y= 13.5

Step-by-step explanation:

9/2 = y/3.....9 to 2 = y to 3

cross multiply

(2)(y) = (9)(3)

2y = 27

y = 27/2

y = 13.5

When 70,000 is written as 7.0 10^{n} what is the value of n ? Can you please explain with some details?

Answers

I believe it's n=-4? It's a negative because the decimal moves to the right 4 times to get 70,000

$70 000=7\cdot10^4\n \n840000000=8,4\cdot10^8\n \n0,004=4\cdot10^(-3)\n \n0,000000123=1,23\cdot10^(-7)$

What number is 70% of 45

Answers

$x-\ number\n\n(x)/(45)*100\%=70\%\n\n(x)/(45)=0.7\ \ \ | multiply\ 45\n\nx=31.5\n\n31.5\ is\ 70\%\ of\ 45.$

70% of 45
= 0.7 x 45
= 31.5

In the blueprint for A rectangular balcony is 1 inch by 1.75 inches if the actual length is 7 feet what is the perimeter

Answers

Answer:

22 feet

Step-by-step explanation:

Given

In blue print,dimensions of rectangular balcony are, length(l)=1.75inch and breadth(b)=1inch
The actual length(L)=7 feet

To find the actual perimeter, we need the breadth of balcony(B)

The ratio of length to breadth in blue print must be equal to the ratio of actual length to breadth

⇒

$\frac{\text{length of rectangular balcony in blueprint}}{\text{breadth of rectangular balcony in blueprint}} =\frac{\text{length of rectangular balcony actually}}{\text{breadth of rectangular balcony actually}}$