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natima [27]
4 years ago
15

Which properties are used to add these complex numbers? Choose all that apply.

Mathematics
2 answers:
mario62 [17]4 years ago
5 0

B. Associative Property , you're working out the numbers in the parentheses before anything else.

Dennis_Churaev [7]4 years ago
3 0

Answer:

Properties used here are:

A. Commutative property.

C. Associative property

Step-by-step explanation:

Given the expression:  

(7+2i) + (4+3i)

(7+  2i) + 4 + 3i

According to associative property:

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

7 + (2i + 4) + 3i

Using commutative property:  

a + b = b + a

7 + (4 + 2i) + 3i

(7 + 4) + (2i + 3i)

Simplify:

11 + 5i

So, we use Commutative & Associative Property.

That's the final answer.

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The ratio of the same side interior angles of two parallel lines is 1:14. Find the measures of all eight angles formed by the pa
Andrew [12]

Answer:

At the intersection of the first parallel line with the transversal, a = 12°, c = 168°, d = 12°, e = 168°. Counting counterclockwise from a.

At the first intersection of the second parallel line with the transversal, b = 168°, f = 12°, g = 168°, h = 12°. Counting clockwise from b.

Step-by-step explanation:

At the intersection of the first parallel line with the transversal, a = 12°, c = 168°, d = 12°, e = 168°. Counting counterclockwise from a.

At the first intersection of the second parallel line with the transversal, b = 168°, f = 12°, g = 168°, h = 12°. Counting clockwise from b.

Step-by-step explanation:

Let a be the first interior angle. Since they are in 1:14, the second same side interior angle is b = 14a.

We know that the sum of interior angles equals 180°.

So, a + b = 180°

a + 14a = 180°

15a = 180°

a = 180/15

a = 12°

At alternate angle to the other interior angle, b adjacent to a is c = b = 14a = 14 × 12 = 168°

The angle vertically opposite to a is d = a = 12°

The angle vertically opposite to a is b = e = 168°

At the intersection of the second parallel line and the transversal, the angle alternate to a is f = a = 12°

the angle vertically opposite to angle b is g = b = 168°

the angle vertically opposite to f is h = 12°

6 0
3 years ago
Mike took a taxi from his home to the airport. The taxi driver charged an initial fee of 6plus3 per mile. The total fare was $24
Hatshy [7]

A. 2

24divided by 9=2.6 inf

4 0
3 years ago
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Make x the subject of the formula a − bx = c​
Eddi Din [679]

Answer:

x = c - a / -b

Step-by-step explanation:

a - bx = c

-a               -a

-bx = c - a

divide -b    

x = c - a / -b

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3 years ago
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Chia is planning a sailing party for her friends the boat rental is $150 plus an additional $15 per person see it has saved up $
storchak [24]
150 + 15x = 400
(-150) 150 + 15x = 400 (-150)
15x = 250
(/15) 15x = 250 (/15)
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So Chia can invite 16 people
3 0
3 years ago
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Eira created color panels for a wall using a mix of only red and blue paints. She plotted the quantities of red and blue paints
lesya [120]

Answer:

3 ≤ x ≤ 7 or x is between 3 and 7, inclusive

Step-by-step explanation:

Eira's graph probably resembled the diagram below.

The domain is the set of all possible x-values that will make a function work.

x can take any value from 3 to 7.

The domain is [3, 7] or 3 ≤ x ≤ 7.

4 0
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