ElectricPavlov

I will assume that is 30^o  and 60^o elevation.

Alt = 6000

We  need to find out how much closer it got in 1 minute

First at 30 degrees    tan 30 = opp/ adj = altitude / horizontal distance

                                    .5774 = 6000/d

                                       d = 10 392.3 m

Then at 60 degrees    tan 60

                                    1.732 = 6000/d

                                      d = 3464.1

d1-d2 = 6928.2 m   in ONE minute       divide by 60 to get m/s115.34 m/s    

  x60 = 415691.9 m/hr = 415.69 km/hr

OK... lets say adam runs at 24 km /hr  finishes in 1 hour

              charles is 12 km behind .....he is only 1/2 way through....must be running  at 12 km/hr   he will finish in 2 hours

                  ben is 8km behind    he has run 16 km in one hour     16 km/hr    he will finish in 1  1/2 hour

                        Charles  done in 2 hours

                               whne Ben finishes Charles is   still  30 minutes behind x 12/km/hr  = 6 km

6 gallons / 12 hours =      1/2 gallon/hour

1/2 gallon/hour x 42 hours = 21 gallons lost 

  $  600 x 3/4 = 450  at a loss 0f 20%  so she received;   450 x .8 = $ 360

       600-450 = $ 150 lemons left   

  $  150  x 1.20   = $ 180

180 + 360 = 540     she lost  60$ overall     60/600 = 10%

EDITED TO CORRECT MISTAKE !!!  1/19/20

The distance from the house to the foooood   is the same as from the fooood to the next house

x coordinate   -1 to -3   is -2   add another -2     to get   -5 = x

y coordinate    4  to 2    is -2   add another -2   to get     0  = y

https://web2.0calc.com/questions/please-help-i-really-don-t-know

.6 lb   x   6.95 $ / lb       =   amount to pay  

 _  lb     x     __   $ / lb         See how the 'lb' cancels out ?   You are left with only $  

I will assume these says   12  SESSIONs

Let x = individual students

then 12- x  = group sessions

Income from individuals    x    is   25 x

Income from group  is                18(12-x)         added together this equals  265

25 x    +  18 ( 12-x)   = 265        solve for x , the individuls, then group# =   25-x

1 5

5 1

4 2

2 4

3 3        5 possibles out of 36 possible rolls        5/36     5/36 = .1389

# pennies = x          value in pennies = .01 x

# nickles  =  x+6      value in nickles =  .05 (x+6)         added together = .66

.01x    +   .05 (x+6)   = 0.66        solve for x  (pennies) then nickles = x+6