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
PolarNik [594]
3 years ago
15

What is the product of the complex numbers (-3i+4) and (3i+4)?

Mathematics
1 answer:
Alexus [3.1K]3 years ago
3 0
(-3i + 4)(3i + 4)

Use the FOIL method

multiply the Firsts: -3i * 3i = -9i² = because i² = -1 ⇒ -9i² = -9(-1) = 9
multiply the Outers: -3i * 4 = -12i
multiply the Inners: 4 * 3i = 12i
multiply the lasts: 4 * 4 = 12

9 - 12i + 12i + 12 = 21
   
You might be interested in
Which statement is true about the ratios of squares to circles in the tables? O The ratios in Table A are greater than the ratio
Novay_Z [31]

[B]   The ratios in Table B are greater than the ratios in Table A.

Step-by-step explanation:

Can i get brainlist

6 0
4 years ago
Read 2 more answers
convert the measurement 5,000 yards (There are 1.09 yards in a meter.) A. 4000 m B. 6000 m C. 5 km D. 500 m
Ray Of Light [21]

Answer:

A

Step-by-step explanation:

If 1.09 yards is in a meter, then there are 4572 meters in 5000 feet.

A is the correct answer. Hope this helps!

3 0
3 years ago
If Maya orders a $1.89 drink, 3 cookies at $.99 each, and 2 slices of pizza at $2.50 each. How much did Maya pay for her order?
sweet [91]

Answer:

$9.86

Step-by-step explanation:

Frist you read the problem and you see that she pays $1.89 for one drink

so you write down $1.89

then 3 cookies for $0.99 so you multiply $0.99 by 3 and you get $2.97

so you write down $2.97

next 2 slices of pizza for $2.50 so you multiply 2 by $2.50 and you get $5.00

so you write that down

lastly you and the answers you wrote down and you get $9.86

Maya payed $9.86 for her order.

5 0
3 years ago
How do u do 2 over 3 =A over 60 PLZ NO LINKS THANKS
Ivanshal [37]

Hey there!

2/3 = a/30

First: you have to CROSS MULTIPLY the given numbers

2(30) = 3(a)

2(30) = 60

3(a) = 3a

New EQUATION: 3a = 60

Second: DIVIDE 3 to BOTH SIDES

3a/3 = 60/3

CANCEL out: 3/3 because that gives you 1

KEEP: 60/3 because that helps you solve for your a-value

60/3 = a

60/3 = 20

Therefore, your answer is: a = 20

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

6 0
3 years ago
I need help with this ASAP
vodomira [7]

Answer:

Its 0 because thats the only value not bigger than 4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • In slope-intercept form, what is the equation of a line perpendicular to y = 2x+ 7 that passes through the point (5, 8)?
    11·1 answer
  • An airplane took 2 hours to fly 600 km against a head wind. The retrun trip with the wind took 1 and two thirds hours. Find the
    12·1 answer
  • 7x+17=7x-17 is this an identity, conditional or inconsistent equation
    11·1 answer
  • GONZALEZ
    7·1 answer
  • Is the relationship a function?<br> {(1,4), (4,1), (1,5),(5,1)]
    12·2 answers
  • The graph shows that the distance a dog runs is proportional to the time the dog is running. You want to use only one plotted po
    12·1 answer
  • Find the x-intercept <br> -10x+6y=2
    10·1 answer
  • 4 times a number increased by 7 . Explain your answer if you can
    5·1 answer
  • Isabelle ran a distance of about 26 miles during a marathon. In other countries, kilometers is used to measure length. There are
    13·1 answer
  • Bianca deposited $1500 into asavings account for whichsimple interest is calculatedquarterly. If her $1500 grew to$1509 after 3
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!