1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rasek [7]
3 years ago
9

Which pair of complex factors results in a real number product? 15(–15i) 3i(1 – 3i) (8 + 20i)(–8 – 20i) (4 + 7i)(4 – 7i)

Mathematics
2 answers:
photoshop1234 [79]3 years ago
6 0

Answer:

(4 + 7i)(4 – 7i)

Step-by-step explanation:

This pair will produce a real answer because they are complex conjugates.

Complex conjugates ( a+bi) (a-bi)  when multiplied together form a real number ( a^2 + b^2)

I am Lyosha [343]3 years ago
6 0

Answer:

D. (4+7i)(4-7i)

Step-by-step explanation:

You might be interested in
Rob says that this graph shows a proportional<br> relationship. Is he correct? Explain.
zysi [14]

Answer:

No. Rob was correct to extend the lines to the origin, but the points should be on a single straight line. He made two straight lines.

Step-by-step explanation:

this is from the sample responds so you can see what they want

5 0
3 years ago
Read 3 more answers
What is the slope-intercept equation for the line below?
Kryger [21]
It would be at 35 when you work all then problems together
8 0
3 years ago
What is the area of the triangle? 13 10 12 units​
OLEGan [10]
10 and 12 you never get the number that’s on the slanted side I learned this but I forgot if u add or multiply but the digits that should be used r 10 and 12
7 0
3 years ago
PLEASE PLEASE HELP ME WITH THIS QUESTION PLEASE <br><br>AND SHOW YOUR STEPS PLEASE help me please
jeyben [28]

Answer:

4a)= 2.1m    4b)= 1.9 m    5)= 29.6º

Step-by-step explanation:

4a):

x is the opp

AB is the hyp

BC is the adj

thus,

sin32 = x/4

cross multiply, x= 4*sin32

x= 2.1196.......

x=2.1 m

4b).

x is the hyp

ac is the opp

bc is the adj

thus,

cos65=4.5/x

cross multiply, x= 4.5*cos65

x=1.9017....

x=1.9 m

5).

AB is the opp

bc is the adj

ac is the hyp

thus:

tanC= 2.1/3.7

C= tan^-1 (2.1/3.7)

C= 29.5778.....

C= 29.6º

5 0
3 years ago
What is the slope of the line: y = 2x - 1?​
photoshop1234 [79]

Answer:

m=2

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Subtracting a number is the same as adding its opposite.
    7·1 answer
  • Given two parallel lines cut by a transversal same side interior angles are congruent
    7·1 answer
  • The circumference of a circle is 18.84 yards what is the circles diameter
    11·1 answer
  • If the ordered pair (a, b) satisfies the inequality. y &gt; x-4, three of these statements are
    13·1 answer
  • BRAINIEST TO WHOEVER RIGHT PLZ HELP
    9·1 answer
  • Solve each of the following system of equations by substitution!!!<br><br> x-5y=-49<br> y=-2x+1
    13·1 answer
  • Shela has $89 in her bank account. If she uses 30% of her money how mutch was the bill
    7·1 answer
  • How to solve this. I am very confused.
    12·2 answers
  • Find angle sqr and pqr
    5·1 answer
  • 16. Find the total 2 points amount of interest if the interest is compounded annually. $2750 at 8% for 2 years.​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!