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the answer is n=12

Of COURSE!

r u stupid?

33=.75X where X is the original price

33/.75 = 44

Original price $44

Of COURSE!

r u stupid?

1500*24.85 = 37275 minus the 97.5 for the broker

250*28.32 = 7080 - First sell

800*33.60 = 26880 -Second Sell

1500-(250+800) = 450 -Remaining shares

450*39.94 = 17973 -Third Sell -minus another 97.5 for the broker

7080+26880+17973-195-37275 = 14463 Money earned

$14463

Call the portion of the job that the large pump can do in 1 hour  = 1/R   where R is the total number of hours that it takes 1 large pump to complete the task

Call the portion of the job that the small pump can do in 1 hour = 1 / r   where r is the total number of hours that it takes 1 small pump to complete the task

And Rate x Time =  Amt of the job done

So...we have the following system

2*(1/R)*4  + 1*(1/r)*4  = 1   →   8/R  + 4/r  = 1

1*(1/R)*4 + 3*(1/r)*4   = 1   →   4/R + 12/r  = 1

Multiply the second equation by -2 and add it to the first

-20/r  = -1   →   r/20  = 1    so r = 20   hours for one small pump to fill  the pool

And using     8/R + 4/r = 1  to solve for R, we have

8/R + 4/20  = 1

8/R + 1/5  = 1

8/R = 4/5

R/8  = 5/4

R = 40/4  = 10 hrs for one large pump to fill the  pool

So... for 4 large pumps and 4 small pumps working in unison, we have.....

The 4 large pumps will fill  4/10  = 2/5 of the pool in one hour  [each fills 1/10 of the pool in one hour]

The 4 small pumps will fill  4/20  = 1/5  of the pool in one hour  [each fills 1/20 of the pool in  one hour]

So...in one hour    2/5 + 1/5 = 3/5  of the pool is filled

And...inverting this fraction gives us the total time = 5/3 hrs =  1 + 2/3 hrs =  1 hr 40 min

The parenthesis indicates a multiplication so without them it would be -2-1-3 = -6

But with them it would be -2 * -1 * -3  or -2(-1)-3

The second one indicates that the 3 is subtracting. 

-2*-1*-3 = -6

-2(-1)-3 = -1

Simply enough of a solution

x(1/8)=-3/2

x=-(3/2)/(1/8)

multiply by reciprocal

-(3/2)*(8/1)

-24/2

-12

I may have messed up. It is possible that you need to get a common denominator

-(3/2)*(16/2)

-48/2

-24

-6236.3333333333333333

-(-5)+5^2-4(6)/2

5+25-24/2

30-12

18

Treat the starting painting as X

1/3 is the scale factor

Put the orginal on top, in place of 1, and the outcome is the original paintings size

13/3 = 4.3333333333333333

17/3 = 5.6666666666666667

So the painting was originally 4.3 by 5.6 or 5.67 depending on how you round.

OK I make 2 mistakes

I put 46 instead of 44 for the leftover cards (I left the jokers in hahaha)

I add instead of multiplying the combinations going across.

After fixing these mistakes I get this which is the same as your answer :)

NCR(4,3) * NCR(4,1)  =  16

NCR(4,2) * NCR(4,2) =  36

NCR(4,1) * NCR(4,3) =   16                           

NCR(4,2) * NCR(4,1) * NCR(44,1)  =   1056

NCR(4,1) * NCR(4,2) * NCR(44,1)  =   1056

NCR(4,1) * NCR(4,1) * NCR(44,2)  = 15136

16+36+16+1056+1056+15136 = 17316

Thank you Miss Melody.

Thanks  :)

Correct - a - mundo.....!!!

oh dont worry i flanged his last post asking the peopel who run the calc2.0 website to banned him

B is correct

Can you please stop...

Note, DS...2cm = 1m     is the same as     1cm  = (1/2)m   (1)

And there are 38 total cm in the scale drawing

So  multiplying (1)   by 38  on each side gives us     38cm  = 38*(1/2)m   = 19m

So   19m x $4.19 per m   =  $ 79.61

The cities are 140miles apart..so......

3 / 35  = x / 140       cross-multiply

140 * 3   = 35 * x

420  = 35x  divide both sides by 35

x = 12     the cities should be 12 inches apart on the re-scaled map

P(car)    =   1/5   = 20%

3.141592653589793238462643383279502884197169399375105820974944592307816406286 20899862803482534211706

−1≤x≤2. f(x)=x^2+6

The average rate  of change  =   [f(b) - f(a)] / [b - a ]     where a = -1   and b= 2

f(2)  = 2^2 + 6  = 10

f(-1)  = (-1)^2 + 6  = 7   so

[10  - 7]  / [2 - (-1)]  =   3 / 3    = 1

OK, Frost......good luck to your sis.....!!!!

x + 5y = 13

x + 2y = 1        rearrange this as     x = 1 - 2y     ......now...........substitute this into the first equation for x   and we have......

[ 1 - 2y] + 5y  = 13   simpliify

1 + 3y  = 13       subtract 1 from both sides

3y  = 12      divide both sides by 3

y =4

And using   x = 1 - 2y   we have    x = 1 - 2(4)  = 1 - 8  =  -7

so funny XD

and who ever this is that we want baned then just go to a post that he has made and flag it but then put down in the "other" box what he is doing rong and say that you want him blocked! Yes i know it doesnt always work but just try it u never know what can happen.