Quazars

Do you mean compoundly because if then you just take 1000 * 0.5^20 which would equal

0.000 953 674 316 4 when put into the calculator.

Hope I could help!

May I ask how you drew/made one?

Absolute value of 3n>15

Absolute value of n>5

n>5 or n<-5 Since the absolute value turns the negative into a positive and <-5 would be more than 5 when you remove the negative symbol. This is easily shown on a number line but I don't know how to draw one.

1: 3.8847 (Divide by 100)

2: 27 is the exponent if that's what you mean

I just rose from my chair because of how off topic this conversation is going :)

I see what you did there. It was a great pun for REAL.

I believe it means the imaginary number. It could however just be any number as x or n or y.

Imaginary number is what you get when you take the square root of negative numbers since no actual number when squared gives a negative result, people made up a number and the name imaginary numbers sticked to it. I is the imaginary unit number but could also stand for what I believe is the unit matrix which has 1's across the diagonal and 0's everywhere else.

I assume it's imaginary number that the context is meaning. 8i could be the square root of -64

i^2 = -1

This makes some mathematics easier, even though we don't actually know what i itself is, it is unreal.

For example: What is the square root of -16?

The answer would be 4i since sqrt(-16)=sqrt(-1) * sqrt(16)

Which therefore gives us i(since i^2 is -1) and 4(because sqrt(16) is 4)

Then we end up with i * 4 which can just be written as 4i.

Hope I helped!

The circumference of a circle is 2r(pi) so we substitue 18 for r and then put it in the calculator

(note: You could also use 3.14 as an approximation for pi and work it out yourself)

36 * pi is approximately equal to 113.1

Hope I could help!

As zegores said,writing number that is too small or too big to write, for example you want to write 5,000,000,000,000,000,000,000,000,000 but since that would take a long time and unnessecary writing you could put 5 * 10^27

Another example:

0.000 000 000 000 000 54 could be written as 5.4 * 10^-16

Usually used in problems dealing with space like the distance between two galaxies, or in very small distances or quantities.

647 - 47.56 + 26 = 625.44 $