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Hallo MM

This pic cannot be viewed Maia.   :/

Hallo MM

The answer is -0.738558584

Yes but 10^2.08 is not exactly 120

It is 120.226........

10 to the power of any positive whole number is just 1 followed by the index number of zeros

so

10^6 = 1000000

10^2 = 100

etc

10^120= 1 followed by 120 zeros

Thanks Omi67,

It is great to see you posting in this English forum :))   

Maybe I should post in the German forum   

why ? where was he ? 

how many 7-digit numbers can be formed if the first digit cannot be 0 or 9 and if the last digit is greater than or equal to 2 and less than or equal to 3? Repeated digits are allowed

Hi answering guest.  You have 8 numbers in your answer and there are only 7 digits. But you are certainly on the right track.

The first can be 1,2,3,4,5,6,7 or 8   That is 8 posibilities.

Then next 5 can be ans digit so that is 10 possibilities each.

Thge last one can only be 2 or 3.    That is 2 possibilities.

so the answer is

8*10*10*10*10*10*2 = 1 600 000

Hallo

\(A = 6x^2\)

\(6x^2 = 54 cm^2 \)

\(x^2 = 9 \)

\(x=3 cm \)

so the length of the cube is 3 cm . 

\(v = x^3 \)

\(v = 3^3 \)

\(v = 27 cm^3 \)

You can solve this as an equation in one variable.

1-) The question say that Kelly had 3/5 as many jellybaens as Lynn.(Suppose that Lynn had y Jellybeans ) , so kelly had

3/5y jellybeans. 

2-) After Lynn gave Kelly 3/5 of her jellybeans, now Kelly had ( 3/5y+3/5y ) . 

3-)  Kelly had 160 more than Lynn .  so the equation now become  3/5y+3/5y = 160 + y 

solve this equation to find the value of y which represent how many jellybeans lynn had. 

3/5y+3/5y = 160 + y 

6/5 y = 160 + y 

1/5 y = 160 

y = 800 

so Lynn had 800 jellybeans . 

and we know that Kelly had 3/5 as many as Lynn , so 

Number of Kelly's jellybeans = 3/5*800 = 480 jellybeans . 

Lynn had 800 jellybeans 

Killy had 480 jellybeans 

The total jellybeans is 800+480 = 1280 . 

Hallo Maia

8*10*10*10*10*10*10*4

On the first day, he read  1/5 of the book, so the remaning is 4/5. 

On the second day, he read 75% from the remaning (4/5), so 0.75*4/5 = 3/5.

so now he read 1/5 + 3/5 = 4/5 of the book.

the remaning is 1/5, and the question say that he had 75 pages left, so 1/5 of the book = 75 pages 

and now you can solve this as an eqation 

1/5x = 75 

x= 375

so the book contain 375 pages . 

hope this is helpful 

Hallo guest

Hallo guest

That's it!!!!!. 1 X 10^120. Unless you want to write a 1 + 120 zeros!!. Or, you want to take the log of 1 X 10^120=120. I'm afraid that's all you can do. You can also write it this way: 10^10^2.08.

In Miles it would be about 18.6 Miles per second or about 67,000 Miles per hour. The circumference would be about 587,000,000 Miles.

The Earth's orbital velocity is just about 30 Km per second, or about 108,000 Km per hour. It's orbit's circumference is about 942,500,000Km.

what is 37 to the 9th power?

37^9=129,961,739,795,077

2.82910000483 X 10^17

Thank you Chris   

They are very beautiful roses, funny I could have sworn that they are tullips but either way they are lovely   :))   

I am very pleased to be back :)

I thought I posted this ages ago, I guess it did not get past the preview.  How annoying.  Sorry for the late reply Chris :)

Thanks LambLamb.......

Remember that ......   2ⁿ / 2ⁿ   =  2^n-n  = 2⁰   but, as LambLamb points out...   2ⁿ/2ⁿ  = 1

So......   2⁰  = 1

Thanks, LambLamb for that good answer......!!!!

Here's another way to figure this out.....

Let T be the total travel time - in hours - for the slower bike....so T + 4  = the total travel time  - in hours- for the faster one....and we have Rate * Time = Distance.......so......twice the distance the slower one traveled = the distance the faster one traveled.......or, algebraically......

2[90T]  = 120[T + 4]  simplify

180T  = 120T + 480    subtract 120T from both sides

60T = 480     divide both sides by 60

T  = 8hrs

So....the slower bike travels .....   90kmh(8h) = 720km

And as LambLamb pointed out.......the faster one traveled 120km/hr (12h)  = 1440km