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Ulleksa [173]
3 years ago
14

Which equation shows an example of the associative property of addition? (–7 + i) + 7i = –7 + (i + 7i) (–7 + i) + 7i = 7i + (–7i

+ i) 7i × (–7i + i) = (7i – 7i) + (7i × i) (–7i + i) + 0 = (–7i + i)
Mathematics
2 answers:
Sholpan [36]3 years ago
8 0
The answer would be  (–7 + i) + 7i or –7 + (i + 7i)

You can get the result of the addition  by grouping the numbers (–7 + i) + 7i or  –7 + (i + 7i)
These are just the same.

Anna007 [38]3 years ago
4 0
The correct answer is the first option, which is:

 (–7 + i) + 7i = –7 + (i + 7i)

 The explanation is shown below:

 1. By definition, in the associate property of addition you summ the number by grouping them with parenthesis, without matter where you use those parenthesis.

 2. Therefore, as you can see, you can obtain the result of the addition  by agruping the numbers <span>(–7 + i) + 7i or  –7 + (i + 7i)</span> .
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If i started a business making braclets for $2 and necklaces for $3 with a budget &gt;200 what would be the inequality equation?
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There is a child that weighs 90 pounds and every time he eats pizza he gains 5 pounds every week if he ate pizza for 3 weeks how
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4 years ago
answer these BOTH. PLEASE! if u answer both correctly i'll give u brainliest and extra points please please please.
Reil [10]

<u>Answer:</u>

9. x = 12

10. x = 31

<u>Step-by-step explanation:</u>

9. Corresponding angles are equal, so technically you can move that (7x - 20) to be diagonal with the (4x + 16). Along with the corresponding angle, diagonal angles are equal to each other. Therefore you can set (7x - 20) equal to (4x + 16) to find x.

7x - 20 = 4x + 16

Solve

3x - 20 = 16

3x = 36

x = 12

Therefore x is equal to 12

<u>Check:</u>

4(12) + 16

= 64

7(12) - 20

= 64

10. All angles in a triangle have to add up to 180 degrees. Therefore, you can write your equation like this:

x + 2x + 25 + 2x = 180

Combine like terms

5x + 25 = 180

Solve

5x = 155

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Therefore, x = 31.

<u>Check:</u>

31 + 2(31) + 25 + 2(31) = 180

31 + 62 + 25 + 62 = 180

180 = 180

<em>I hope this helps!!</em>

<em>- Kay :)</em>

<em />

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