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3 years ago

Write square root of 64 - square root of -289 as a complex number in the form of a+bi

Mathematics

1 answer:

stellarik [79]3 years ago

8 0

Answer:

$\sqrt{64}-\sqrt{-289}$

$=8-17i$

Step-by-step explanation:

$\sqrt{64}=8$ because 8(8)=64 and 8 is the positive square root of 64.

$\sqrt{-289}=17i$ because 17i(17i)=289i^2=-289(-1)=-289.

$\sqrt{64}-\sqrt{-289}$

$8-17i$

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Roger is paid $50 to sell videos of a play to an audience after the play is preformed.

konstantin123 [22]

Answer:

Roger can earn $510 at most.

Step-by-step explanation:

We are given the function

Which gives the earnings of Roger when he sells v videos. Since the play’s audience consists of 230 people and each one buys no more than one video, v can take values from 0 to 230, i.e.

That is the practical domain of E(v)

If Roger is in bad luck and nobody is willing to purchase a video, v=0

If Roger is in a perfectly lucky night and every person from the audience wants to purchase a video, then v=230. It's the practical upper limit since each person can only purchase 1 video

In the above-mentioned case, where v=230, then

Roger can earn $510 at most.

3 0

3 years ago

3. Rectangle J is 6 feet wide and 9 feet long.

Furkat [3]

Answer:

No it's not!

Step-by-step explanation:

because the length (long) of J and K are totally different whereas the breadth(width) of J and K is also different which does make similar in sense

8 0

2 years ago

A class of 40 students elected a class president. There were 12 votes for Candidate A, and 18 votes for Candidate B.

Helen [10]

Hey there, Bulgogi!

The correct answer will be the first one since [I'm assuming] you know that to calculate the percentage of something, it's the amount of that something divided by the total amount but since only 30 students voted [12+18] multiplied by 100.

So, we are calculating the percentage on votes and 12 students voted for Candidate A so our Numerator will be 12 and our Denominator will be the total amount of student who voted, so 30 [or 12+18]

Once put into a fraction, we will get $\frac{12}{12+18}$ which would be equals to 2/5 or 0.4. Now we multiply by 100 and we get a total of 40% for Candidate A.

Thank you for using Brainly.
See you soon!

4 0

3 years ago

Find the value of x to the nearest tenth

Hitman42 [59]

Answer:

a^2+b^2=c^2

6^2+6^2=72

square root of 72

=8.49(3sf)

c^2-b^2=a^2

x=3

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3 years ago

Read 2 more answers

What are the coordinates of the point where the total costs for both companies are the same? Question 1 options: (2, 60) (0, 0)

Molodets [167]

Answer:

0,0

Step-by-step explanation:

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3 years ago