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$${\sqrt{{\mathtt{24}}}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{30}}}} = {\mathtt{26.832\: \!815\: \!729\: \!997\: \!476\: \!4}}$$

This is given by... pi*r* h  .... where r is the radius and h is the height

That's what I do!

Okay, well I learned how to divide fractions as 5/7 and then you divide it by 8/16. You need to switch the 8/16 to 16/8 and just multiply the numbers straight across. Not sure if that helps, but that's how I divide fractions

To divide fractions, lets use (1/2) and (5/6) for example

(1/2)/(5/6) is the sentence

Lets swap (5/6) to (6/5) and multiply instead of divide

(1/2)*(6/5) Multiply Numerators

1*6=6

Now denominators

2*5=10

6/10=3/5

Use a calc to check work

$${\frac{\left({\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right)}{\left({\frac{{\mathtt{5}}}{{\mathtt{6}}}}\right)}} = {\frac{{\mathtt{3}}}{{\mathtt{5}}}} = {\mathtt{0.6}}$$

Here's the system we need to solve

5x + 10y + 25z = 545

2y = z     →   y = z/2

x  = z + 11

Substituting........we have

5(z + 11) + 10(z/2) + 25z = 545  

5z + 55 + 5z + 25z  = 545

35z + 55=  545       subtract 55 from both sides

35z = 490              divide both sides by 35

z = 14     and that's the number of quarters

2y = z    →  2y = 14    →  y = 7    and thats the number of dimes

x = z + 11 →   x = 14 + 11  →   x = 25      and that's the number of nickels

So in 24 feet, the length is twice as long as the width

So 8*2=16

16+8=24

16 and 8 are length and width

5*x=2*(x+1)  simplify

5x = 2x + 2   subtract 2x from both sides

3x = 2           divide by 3 on both sides

x = 2/3      (this is the same answer as happy 7's)

Indeed I do.

Looks like someone gets it

Mines $54   

Oh thanks!!!  Team Happy is back!!!  (because I'm happy, clap along if you feel like a room without a roof)

great answer.

$${\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{x}} = {\mathtt{2}}{\mathtt{\,\times\,}}\left({\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}}\right) \Rightarrow {\mathtt{x}} = {\frac{{\mathtt{2}}}{{\mathtt{3}}}} \Rightarrow {\mathtt{x}} = {\mathtt{0.666\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

You would do better to google this but

let me see

*the continental shelves match together like jigsaw puzzles indicating that they were once joined.

*The fauna and flora of the adjoining 'jigsaw' peices are very similar and genetically it can be shown that they have common ancestors.

*There is also similarities between rocks and fossile of previously adjoining continents.

* The rift valleys such as the one that runs the length of the Atlantic ocean is suggestive that the two plates are pulling apart

* High mountains such as the Himalayan mountains have  formed where two plates have collided and pushed each other up.

This is off the top of my head - you should google it.  :)

Um....sure????

And one more thing!!!  Every letter is less than 26!!!!  So what do letters and 26 have in common????

LOL! I have always been told that I do things my way then to find out my way doesn't work.

Pretty good answer CPhill....I wanted to help, but kinda forgot how to do this momentarily

If it takes 3 hours to travel 48 miles with the current, the speed must have been 16 mph.

If it takes 4 hours to travel back against the current, the speed must have been 12 mph.

The average rate for the whole trip is just

(16 + 12) / 2 = 14 mph   (this isn't technicallly correct, but we'll go with it !!!)

The speed of the current must have been 2 mph

Check......time with current x rate + time against current x rate = total distance

3(14 + 2) + 4(14-2) = 96 miles

I guess!!!

Yeah slowly found that out. XD

Thanks Happy

You are wrong about too much