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Sedaia [141]
3 years ago
12

Multiply -3i and it’s conjugate. Simplify.

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
5 0

Answer:

-3 + 9i

Step-by-step explanation:

The conjugate of -3i is - 3 - i.

(- 3 i) × (- 3 - i)

Multiply both terms.

-3 + 9i

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HIGHSCHOOL GEOMETRY
Ad libitum [116K]

Answer:

B = 75°

Step-by-step explanation:

Using the Sine rule:

a / sin A = b / sin B = c / Sin C

a / sin A = b / sin B

20 / sin 48 = 26 / sin B

Cross multiply :

Sin B * 20 = sin 48 * 26

Sin B = (sin 48 * 26) / 20

Sin B = 0.9660882

B = sin^-1(0.9660882)

B = 75.036

B = 75°

6 0
3 years ago
Please help with this :D
jarptica [38.1K]

Answer:

130°-85°=45°

x=45°

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3 0
3 years ago
Can someone pls help solve this
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Answer:

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Step-by-step explanation:

6 0
3 years ago
The median of the following data will ________________________ when you in add a data value of 1? (DO MATH on paper!) 8, 9, 9, 4
svlad2 [7]

Answer:

B decrease

Step-by-step explanation:

First, lets put the numbers in order from greatest to least.

10 9 9 8 6 4 4

Second, let's find the median without number 1. (The median is in bold.)

10 9 9 8 6 4 4

Third, let's add the number 1.

10 9 9 8 6 4 4 1

Fourth, let's find the median with the number 1.

10 9 9 8 6 4 4 1

Since there are two numbers in the middle let's find the average between them.

8+6=14

14/2= 7

Last, let's compare the two medians.

8>7

So when you add the number 1 the median decreases. So your answer is B decrease

7 0
3 years ago
Lakshmi donates 20% of her income to charity. What fraction of her income does Lakshmi donate to charity?
777dan777 [17]

1/5

Hope this helps :)


5 0
3 years ago
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