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I'm sure this is a trick question, but I guess I can try.

Order of operations first:

mean of 1 and 2 is 

\((1+2)/2=1.5\)

mean of 1.5 and 3 is

\((1.5+3)/2 =4.5/2 =2.25\)

mean of 2.25 and 4 is

\((2.25+4)/2 =6.25/2 =3.125\)

so the final answer is \(\fbox{3.125}\)

ummm..test is over now, can you explain please?

Ah. Forgive clumsy me. I thought that there was an extra angle :P

Well, glad you found it! 

The answer is an icosagon i think, which has 20 sides

just google searched it, an angle of it is 162 and 1/9

In order to complete a 360 degree rotation on the outer sides, we simply find the rotation by subtracting 162 from 180, finding the vertical outer angle

180-162=18

18! Great! Now, it takes 360 degrees to complete one full circular rotation, so we take 360 and divide it by 18, which gives us 20, which is the amount of sides, if each side has an exterior vertical angle of 18. We have one angle that connects 2 sides, so 

 The answer is \(20 sides\)

ok...but how you get that?

Hey there, Guest!

So, let's say that the second piece is length x.

The first piece is 3 times that, so it is 3x.

The 3rd piece is 20 feet shorter than it, so it is x-20.

Adding them, we get 5x-20, and that equals 100. 

Solving for x, we get 24.

So the lengths are 72, 24 and 4.

Hope this helped! :)

( ﾟдﾟ)つ Bye

n = 20

hmmmm i got the same for a and b, lemme check c real quick

(a).\(\sqrt{3} \over 4\)

(b).\(1 \over 2\)

(c).\(\sqrt{3} \over 4\)

Also, try out imaginary numbers too.

No answer for this since it's very easy to solve, but here's a hint: x and y can be negative, and a negative number squared is positive.

\(ab + c = bc + a\\ ab - bc = a-c \\ b(a-c) = a-c \\ b(a-c) - (a-c) = 0\\ (a-c)(b-1)=0\\ a=c\\ b=1 \)

Therefore, a and c must equal to 6.5, though the question states that all of these numbers are integers.

Ok. So we can list what we have out

The ratio of red paper clips to green paper clips is 3/2.

the reason for this must be the extra 48 clips

so, 3*48=144

then, 48*2=96, which is the amount of green paper clips with the ratio.

144+96=\(\fbox{240}\)

Edit: I was wrong

\(6p^6 \times q^4 + 15p^4 \times q^2 + 3p^4 \times q^3 + 9p^5 \times q^2\)

You didn't have a <,>,<=, or >= to provide the domain. Try to add that next time.

\(j = {\pm \sqrt {32} - 3}\)

The formula of a midpoint of two points is just the average of the x, the average of the y.

\((\frac{(6+x)}{2},\frac{(8+y)}{2}) = (-1, -1) \\ 6+x = -2 \\ 8+y = -2 \\ x = -8 \\ y = -10\)

-8 + -10 = -18

Since you need it quick, here you go, rounded to 3 sig figs:

\(\fbox{0.433}\)

We can split it up by saying that:

\(100 = 3x + x + (x-30)\)

assuming we use the second piece as X since it's the only one both have comparisons to.

so:

\(100 = 3x+x+(x-30) 100=4x+(x-30) 100=4x+x-30 100=5x-30 130=5x 26=x\)

So, the final answer is \(\fbox{26}\) feet