ElectricPavlov

Guest 1 is correct   56/100 =  28/50 = 14/25      Sorry for the error in my first answer

Divide the price$  by the kg amount

56/100    or simplified: 23/50

TAN = sin/cos   so where it would equal 1 or - are at the pi/4  3pi/4   etc    where it would be -1   would be 2nd and 4th quadrants  

3pi/4     7pi/8     or 135 and 315 degrees

You are correct....that was in my correction.....but you may have posted before I corected it!  Good call!

7 000 000 98

700 000 098

seven hundred million and ninety eight

Depends

(-21^2) =441

-(21^2)= -441

CORRECTION:      wrong units    corrected below and added distance for 5 seconds

Speedster displacement= 162 k/hr  x t      Which equals   162 x 1000/=3600 m/s = 45 m/s       45 x t    + (45 x 5) = displacement

Police car  x= displacement = x0 + vo t + 1/2 at^2     (x0=0  vo t =0)  and it has to equal     45 x t + 225

so

45t +225 = 1/2 at^2

90t +450 = at^2     and a=6

6t^2 - 90t-450=0

t^2 -15t-75=0

Quad formula    15+-sqrt(225+300)  / 2  =     18.95 seconds

Hope i did that correctly!                                       

MT.....does the car keep accelarating until it catches the speedster in your answer?

.51988 trillion/2.37 trillion  = .21935865