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Vadim26 [7]
2 years ago
14

(5 - 2i) + (-4 + 81) O A. 5i B. 7i O c. 1-6 D. 1 + 6

Mathematics
2 answers:
Alborosie2 years ago
7 0

1 + 6i

we open the brackets to give us

5 - 2i - 4 + 8i

collecting like terms, we have,

-2i + 8i + 5 - 4

6i + 1

or

1 + 6i

Masja [62]2 years ago
5 0

Answer:

82 - 2i

Step-by-step explanation:

(5 - 2i) + (-4 + 81)

5 - 2i + 77

= <u>8</u><u>2</u><u> </u><u>-</u><u> </u><u>2</u><u>i</u>

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3 0
2 years ago
Which of these expressions CANNOT be simplified by combining like terms?
densk [106]
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By distributing the 2b into the parentheses, you can simplify the expression:
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Here you can just add:
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3 0
3 years ago
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M∠A = 75 + 5x
Firlakuza [10]

Answer:

See below

Step-by-step explanation:

For a parallelogram m < A = m < C so:-

75 + 5x = 87 + 3x

2x = 12

x = 6  

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and m < C = 87 + 18 = 105

Now if the other 2 angles are  = 75 degrees( that is the same side angles add up to 180 degrees) we have proved that it is a parallelogram.

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-12x = -72

x = 6

m < B = 111 - 36 = 75 and m < D = 39 + 36 = 75

So this has been proved.

6 0
3 years ago
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