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
Amanda [17]
2 years ago
11

Maddie converts z = 8(cos(300°) + isin(300°)) into rectangular form z = a + bi and determines that a = 4 and b = 4 StartRoot 3 E

ndRoot.
Which statement identifies whether her values for a and b are correct?

Both values a and b are correct.
Both values a and b are incorrect.
The value of a is correct, but the value of b is incorrect.
The value of a is incorrect, but the value of b is correct.
Mathematics
2 answers:
Anastaziya [24]2 years ago
8 0

Answer:

Option C) The value of a is correct, but the value of b is incorrect.

Step-by-step explanation:

z = 8(cos(300°) + isin(300°))

z = 8cos(300°) + 8isin(300°)

z = 4 + i(-4\sqrt{3})\\z=4-i(4\sqrt{3} )\\

So we can see that a = 4 which is correct but b = -4\sqrt{3} and b in the question says it is b 4\sqrt{3} so its incorrect so Option C is your answer.

ludmilkaskok [199]2 years ago
6 0

Answer:

C

Step-by-step explanation:

I am Always right

You might be interested in
Is n÷12=36,n=108 true or false​
maksim [4K]

Answer:

False

Step-by-step explanation:

n÷12=36

n=36*12

hence n=432

hope it helps you and give me a brainliest

4 0
2 years ago
Read 2 more answers
What is 15/3 as a whole number?
Rasek [7]
The answer to your question is 5
3 0
3 years ago
Mr. Schordine wants to fill up enough helium balloons to allow him to fly through the skies. He weighs 84 kilograms. He knows th
Cerrena [4.2K]

Answer:

There is needed around 311 balloons to fulfill Mr. Schordine’s dream of flight.

Step-by-step explanation:

First, we need to calculate the volume of each balloon by considering the balloons as a sphere:    

V = \frac{4}{3}\pi r^{3}

Where:

r: is the radius = 0.4 meters

V = \frac{4}{3}\pi r^{3} = \frac{4}{3}\pi (0.4 m)^{3} = 0.27 m^{3}

Knowing that 1 m³ of helium is able to lift about 1 kg, that Mr. Schordine weights 84 kg, and that each ballon has 0.27 m³ of helium, the number of balloons needed are:

N = \frac{1 m^{3}}{1 kg}*84 kg*\frac{1 balloon}{0.27 m^{3}} = 311.1 \: balloon              

Therefore, there is needed around 311 balloons to fulfill Mr. Schordine’s dream of flight.      

 

I hope it helps you!

6 0
3 years ago
Plss helppp!!!!!!!!!!!!!
nikdorinn [45]

Answer:

 it is B

Step-by-step explanation: 25 goes in 1 hundred 4 times And that gets us to 24

5 0
2 years ago
I need Help on the Last 2 And Did I get the first 2 right
irina [24]
C. million or 500,000,000
d.thousands or 30,000

and the first one is good and the second one for the million you wrote all the zeros right so it should look like 80,000,000
4 0
3 years ago
Other questions:
  • What is the answer to x-9<15
    7·2 answers
  • Suppose you put $500 into a bank account today. interest is paid annually and the annual interest rate is 8 percent. the future
    9·1 answer
  • Is it 7^12 not so sure ._.
    9·1 answer
  • Please Q12,13,14,15,16,17 am so sorry
    9·1 answer
  • Geometry math question
    12·2 answers
  • What calculation can be used to find the value of y in the equation y^3=27
    14·2 answers
  • At a planetarium, adult tickets cost $2.50 each and children’s tickets cost $1.50 each. One day 408 tickets were sold in all, an
    7·1 answer
  • It's in the screenshot, please help, there's other questions to if you can help
    9·1 answer
  • Mark wants to determine the height, x, of a nearby tree. he stands 47 feet from the base of the tree. The measure of the angle o
    7·1 answer
  • 70 POINTS PLEASE HELP GIVING BRAINLIEST
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!