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I'm answering this.....  5√(20) / 49 =

[5 √(4 * 5)] / 49  =

[5 * √4 * √5] / 49 = 

[5*2 * √5 ] / 49 =

[10√5]  / 49 =

(10/49)√5

Whether this is what was asked.....I don't know......

21

 4pq^2-2p^2q

Take out the greatest common factor = 2pq   .....and we have

2pq (2q - p)

And that's it.....!!!

y = 2x

Let x = 0  , then y = 0

Then, let x = 1, so, y = 2

So....we have the points  (0, 0) and (1, 2)

Now......just plot these on a graph and draw a line through them.....that will be your graph.....

√(1/9) =

√1 / √9  =

1 / 3

We have  (3 x 11)  + (4 x 6) + (4 x 2)  =

33 + 24 + 8  =  65cm^2

Good job, rosala.....

What rosala is saying......in not so many words...is that the nth term is just 3ⁿ

$${\mathtt{9}}{\mathtt{\,\small\textbf+\,}}{\mathtt{10}} = {\mathtt{19}}$$

answer = e

(e=mc2

answer is life.

I think by that you mean 5^-2 so 

5^-2 = 1/5^2 = 1/25

That is 35.5 as a decimal!

See ill tell you! It's really easy! Every number is bro g multiplied by 3 like 3 by 3 is 9 , 9 by 3 is 27 and 27 by 3 is 81 and so on so to get te ninth term just keep on multiplying the numbers by 3 , multiply 243 by 3 and what you get by3 and there you go with your ninth number!

The total number of possible sets that can be made from choosing 9 cards from 52 =

C(52,9)  = 3,679,075,400

But....the ones we are interested in have us choosing any 4 clubs from 13, and from the other 39 cards, selecting any 5 of them.

So we have

C(13.4) * C(39,5)  = 411,666,255

So

411,666,255 / 3,679,075,400  = about 11.2%

sin-1(1.04) =1.0816

5*5*5*5*5*5 = 5^6 = 5^3 * 5^3 =125 *125 = 15625//

1234554321 * 30%

= 3703662963000//

e = m/c2

2ce = m

c    = m /2e

that is the answer.

We have

M = 100(1.045)^t

And we are trying to find

2M = 100(1.07)^t

So we have.....substituting the first equation into the second

2(100)(1.045)^t  = 100(1.07)^t

2(1.045)^t  = 1.07^t

2 = (1.07)^t / (1.045)^t

2 = (1.07/1.045)^t      take the log of both sides

log2  = log (1.07/1.045)^t    so

t = log2 / log(1.07/1.045)  =  about 29.318 years

Proof

100(1.045)^29.318 = $363.45

100(1.07)^29.318 = $726.89

And the second amount is roughly twice as much as the first.

3(y +8) = 5y +4

3y + 24 = 5y + 4

24 -4   = 5y - 3y

20        =  2y

10        =  y

so that answer is y = 10//

5x + 3 = -2

5x      = -2  -3

5x      =   -5

x        =  -1

that is simple case dr.....

3y + 24 = 5y + 4

   -3y          -3y

       24 = 2y + 4

   -4            -4

       20 = 2y

       10 = y

       y = 10

(2+y)³

= ((2+y)x(2+y))x(2+y)

= (4+4y+y²) x (2+y)

= 8 + 8y + 2y² + 4y + 4y² + y³

= y³ + 6y² + 12y + 8

Cool, thanks.

I understand now.

But " 9!/(2!*3!)" means= 9*2*3 

??? 

Thanks

PS. ^ he was me

5x + 3 = 2

   -3       -3

  5x = -1

 divide by 5 from each side

  x = -0.2