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Deffense [45]
3 years ago
7

For a complex number, multiplying by the conjugate always gives which of the following? Select one: O A Non-negative complex num

ber O B. Non-negative real number O C. Negative real number D. Positive rational number E. Negative irrational number​
Mathematics
1 answer:
Bad White [126]3 years ago
8 0

Answer:

B. Non-negative real number

Step-by-step explanation:

For a complex number, multiplying by the conjugate always gives Non-negative real number

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I need help with numbers 2,3,4,5,6 I need to graduate so help
Neporo4naja [7]

Answer:

2.

sinα=√3/(2√7)

cosα=5/(2√7)

tanα=5/√3

cscα=(2√7)/√3

secα=(2√7)/5

*note* you can simplify the above further (by rationalizing them), but I think it's probably fine to leave them as is *

3.) g15.9

4.)25.4

5.) 70.8

6.) 36.4

Step-by-step explanation:

Cot is the inverse of toa so cot= adj/opp

This means the traingle's adjacent side is √3 and its opposite is 5

with this information let's figure out the hypotonouse

√3²+5²=c²

3+25=c²

28=c²

√28=c

√28=2√7

which means the triangle's

opposite= √3

hypotonous= 2√7

Adjacent= 5

With all of this we can just plug in the numbers to find the missing information (where α=angle or theta)

sinα=√3/(2√7)

cosα=5/(2√7)

tanα=5/√3

cscα=(2√7)/√3

secα=(2√7)/5

For this one we have the adjacent and need the opposite

we will use TOA

Tan(25)=x/34

34tan(25)=x

x=15.9

4.) For this one we have the adjacent but need the hypotonouse

we will use CAH

cos(48)=17/x

17/cos(48)=x

x=25.4

5.) for number 5 we have the oppsite and hypotonouse and so we'll use SOH

sin(α)=17/18

α=70.8

6.) For this one we have the opposite and adjacent and so we'll use TOA

Tan(α)=(31/42)

α=36.4

8 0
3 years ago
Please help me! Two quantities are related, as shown in the table:
Fynjy0 [20]
I don't know where you got those answers, but the actual equation that represents those points is: y = -1/2x + 11. None of those listed above are correct.
7 0
3 years ago
If the relative frequencies are 0.48 and 0.52, which
frosja888 [35]

Answer:The Last One

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Prove ABC~EDC ?
erastova [34]

Answer:

AA similarity theorem

Step-by-step explanation:

we know that

<u>AA (Angle-Angle) Similarity</u> states that  In two triangles, if two pairs of corresponding angles are congruent, then the triangles are similar

In this problem we have that

∠BCA=∠ECD ----> by vertical angles

∠BAC=∠DEC ---> because AB is parallel to ED (alternate interior angles)

therefore

Triangles ABC and EDC are similar by AA similarity theorem

8 0
3 years ago
No links or files please im doing two at a time to get it done quicker
andrew-mc [135]

Answer: 5.6 cm

Step by Step: I used the same formula as the question before and I got the answer for this question. When solving questions like this, you can work backwards from the problem and then solve

3 0
2 years ago
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