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I can see where you got your answer of \(1\frac{7}{9}\).  \(3\frac{1}{3}\) is not \(3\times\frac{1}{3}\), \(3\frac{1}{3}\) is \(3+\frac{1}{3}\). 

\(\frac{2}{3}\times3\frac{1}{3}+\frac{1}{3}(3+\frac{1}{3})\)

\(\frac{2}{3}\times(3+\frac{1}{3})+\frac{1}{3}(3+\frac{1}{3})\)

\(\frac{2}{3}(3+\frac{1}{3})+\frac{1}{3}(3+\frac{1}{3})\)

\((\frac{6}{3}+\frac{2}{9})+\frac{1}{3}(3+\frac{1}{3})\)

\((\frac{18}{9}+\frac{2}{9})+\frac{1}{3}(3+\frac{1}{3})\)

\(\frac{20}{9}+\frac{1}{3}(3+\frac{1}{3})\)

\(\frac{20}{9}+\frac{3}{3}+\frac{1}{9}\)

\(\frac{20}{9}+\frac{9}{9}+\frac{1}{9}\)

\(\frac{29}{9}+\frac{1}{9}\)

\(\frac{30}{9}\)

\(3\frac{3}{9}\)

\(3\frac{1}{3}\)

Let the number of adults=A

Number of children =247 - A

5.60A + 2[247 - A] =908.00

5.60A + 494 - 2A =908.00

3.60A =414.00 divide both sides by 3.60

A=115 Number of adults

247 - 115 =132 Number of children

19 

Just google "Planet Earth" and read about it there.

15.314   if '40' is degrees

If it is a standard poker card deck (NOT pinochle)  there are TWO black queens   2 / 52  = 1/26

Well, you got it correct.

50 000 000 watts generated   80 000 watts dissipated in transmission lines. (i^2 r  losses)

(50 000 000 - 80 000)/50 000 000 = 99.84 %

Hi Ginger

You know I saw you logged on.  Then  I saw you had logged off.

Next these 'anonymous' posts appeared.  I knew immediately that you had posted them.  I wondered why you did that but I just guessed that you were of 2 minds about claiming your written creation. :)

I would have known that they were your words even if you had not logged on.  It is not always as easy to hide as people think. :)

Anyway it is nice you are here, I am nostalgic too:)

LOL

I bet the cat did a good job.

Is it stumbling around with head in paws or is it sleeping it off in a cosy corner?   

Hello Guest!

The edge of a cube is a = 8 cm in length.

What is the surface area A in cm2 of the cube.

A = 6a² = 6 * (8cm)² = 384cm²

The surface area this cube is 384cm².

Greeting asinus :- )

  !

SA=6S^2

SA=6 x 8^2

SA=6 x 64

SA=384 cm^2

Thanks

12x^3 - 3(2x^3 + 4x -1) - 5x + 7

I have changed your expession!. What do you want done with it? I will simplify it:

Simplify the following:
12 x^3-3 (2 x^3+4 x-1)-5 x+7

-3 (2 x^3+4 x-1) = -6 x^3-12 x+3:
-6 x^3-12 x+3+12 x^3-5 x+7

Grouping like terms, 12 x^3-6 x^3-5 x-12 x+3+7 = (12 x^3-6 x^3)+(-12 x-5 x)+(3+7):
(12 x^3-6 x^3)+(-12 x-5 x)+(3+7)

12 x^3-6 x^3 = 6 x^3:
6 x^3+(-12 x-5 x)+(3+7)

-12 x-5 x = -17 x:
6 x^3+-17 x+(3+7)

3+7 = 10:
Answer: |  6 x^3-17 x+10

The most efficient formula is one by Gauss =Pi/[3sqrt(2)]=0.74048......effeciency rate.

what is a decimal between 39% and 51%

39% and 51% mean=39/100=0.39 and 51/100=0.51, so you have all kinds of decimals between the two numbers such as: 0.40, 0.41, 0.42.....0.50.......etc.

1/2+ (2/3 / 3/4) - (4/5 * 5/6)=

Simplify the following:
1/2+((2/3)/3)/4-4/5×5/6

(2/3)/3 = 2/(3×3):
1/2+2/(3×3)/4-4/5×5/6

4/5×5/6 = (4×5)/(5×6):
1/2+2/(3×3)×1/4-(4×5)/(5×6)

2/(3×3)×1/4 = 2/(3×3×4):
1/2+2/(3×3×4)-(4×5)/(5×6)

2/4 = 2/(2×2) = 1/2:
1/2+1/(3×3×2)-(4×5)/(5×6)

(4×5)/(5×6) = 5/5×4/6 = 4/6:
1/2+1/(3×3×2)-4/6

The gcd of 4 and 6 is 2, so 4/6 = (2×2)/(2×3) = 2/2×2/3 = 2/3:
1/2+1/(3×3×2)-2/3

3×3  =  9:
1/2+1/(9×2)-2/3

9×2  =  18:
1/2+1/18-2/3

Put 1/2+1/18-2/3 over the common denominator 18. 1/2+1/18-2/3  =  9/18+1/18+(6 (-2))/18:
9/18+1/18+(6 (-2))/18

6 (-2)  =  -12:
9/18+1/18+-12/18

9/18+1/18-12/18  =  (9+1-12)/18:
(9+1-12)/18

9+1 = 10:
10-12/18

10-12  =  -(12-10):
-(12-10)/18

2/18 = 2/(2×9) = 1/9:
Answer: |  (-1)/9

Do you know initial speed?

First you have to solve the fractions in brackets,and then you just add or subtract in normal order from left to the right....so the final solution to this would be 13/18

what is 1.002 to the 16th power=1.002^16=1.0324845092602899796205854891451........etc.