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
defon
3 years ago
11

Which expression is equivalent to 3i(9i +15)? - 45 +9i -27 + 452 27 +452 2722 + 452

Mathematics
1 answer:
vaieri [72.5K]3 years ago
3 0

Answer: B. -27+452i

Step-by-step explanation: Simplify the real and imaginary parts of the expression.

Hope this helps you out.

You might be interested in
Will give brainliest! Probability
alex41 [277]

Answer:

1/49

Step-by-step explanation:

You wrote the problem correctly.  You just needed to multiply instead of add.

1/7*1/7=1/49

So the answer is 1/49.

3 0
3 years ago
Read 2 more answers
If 2 + 2^2 + 2^3 +...+ 2^n = 510 then n = ?
jonny [76]

Answer:

N= 8

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
In a batch of 100 parts, 40 are red, 50 are L-shaped and 22 are both red and L-shaped. What is probability that a part picked fr
Bogdan [553]

The probability that a part picked from this batch at random is either red or L-shaped is 0.68

Step-by-step explanation:

Let us revise some rules of probability

The addition rules are:

  • P(A or B) = P(A) + P(B) ⇒ mutually exclusive (events cannot happen  at the same time)
  • P(A or B) = P(A) + P(B) - P(A and B) ⇒ non-mutually exclusive (if they  have at least one outcome in common)

∵ A batch has 100 parts

∵ 40 are red

- Probability of an event is the [even occurs/total outcomes]

∴ P(red) = \frac{40}{100}=0.4

∵ 50 are L-shaped

∴ P(L-shaped) = \frac{50}{100}=0.5

∵ 22 are both red and L-shaped

∴ P(red and L-shaped) = \frac{22}{100}=0.22

This is non-mutually exclusive because there is a common between them, so we will use the 2nd rule

∵ P(red or L-shaped) = P(red) + P(L-shaped) - P(red and L-shaped)

∴ P(red or L-shaped) = 0.4 + 0.5 - 0.22

∴ P(red or L-shaped) = 0.68

The probability that a part picked from this batch at random is either red or L-shaped is 0.68

Learn more:

You can learn more about the probability in brainly.com/question/2254182

#LearnwithBrainly

3 0
3 years ago
Help!!!!!!!!!!!!!!.<br> Plzzzzzzzzzzzzzzzzzzzzzzz
Lubov Fominskaja [6]
I’m pretty sure the answer is 12 he can buy 12 raffle tickets hope it helps
5 0
3 years ago
15 percent of 250 = what?
dangina [55]

15\%of250 \\  =  \frac{15}{100}  \times 250 \\  =  \frac{3750}{100}  \\  = 37.5

<h2>It helps you ☺️☺️</h2>

Thank you ☺️☺️

3 0
3 years ago
Read 2 more answers
Other questions:
  • Micheal used addition to find 9x100 and he said the product was 90. What did he do wrong?
    12·1 answer
  • 31.24 to 1 decimal place
    15·1 answer
  • What is 4 1/4 divided 4 1/2
    6·1 answer
  • The cylinder contains mw = 1.80 kg of water at just under 100°C. The piston has a radius of r = 6.35 cm, mass of mp = 2.70 kg, a
    14·1 answer
  • A carpenter charges $720 for 18 hours of work. She charges the same amount of money for each hour of work.
    11·2 answers
  • Help pls i have a D in math rn i really need help if you could :(
    5·2 answers
  • Find the length of AB
    9·1 answer
  • Tyrell is a landscape architect. For his first public project, he is asked to create a small-scale drawing of a garden to be pla
    5·1 answer
  • Explaining it thoroughly and you will be mark as Brainiest…
    10·2 answers
  • Which of the following has the same value as
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!