Answer: ![\dfrac{3}{51}](https://tex.z-dn.net/?f=%5Cdfrac%7B3%7D%7B51%7D)
Step-by-step explanation:
![\text{Probability of any event}=\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}](https://tex.z-dn.net/?f=%5Ctext%7BProbability%20of%20any%20event%7D%3D%5Cdfrac%7B%5Ctext%7BFavorable%20outcomes%7D%7D%7B%5Ctext%7BTotal%20outcomes%7D%7D)
Given : The number of cards in a standard deck of cards = 52
The number of jack in a deck of cards = 4
The probability of drawing the first card as jack :-
![\dfrac{4}{52}=\dfrac{1}{13}](https://tex.z-dn.net/?f=%5Cdfrac%7B4%7D%7B52%7D%3D%5Cdfrac%7B1%7D%7B13%7D)
If there is no replacement , the the total number of cards left = 51
The number of jack is left = 3
Then , the probability of choosing a jack for the second card drawn :-
![\dfrac{3}{51}](https://tex.z-dn.net/?f=%5Cdfrac%7B3%7D%7B51%7D)
39/1.5=26 for the 1.5 hours difference.
divide 26/2=13 for each person.
divide 4/2 for the speed increase of person north. The speeds much average to 13.
subtract 13-2=11 and add 13+2=15 for south and north.
north speed is 15 km per hour and south is 11 km per hour.
Answer:
450 m^2
Step-by-step explanation:
let the length be y m (the single side)
let the width be x m
so according to the question
2x + y = 60
or, y = 60 - 2x
now, Area = xy
= x(60-2x)
= -2x^2 + 60x
d(Area)/dx = -4x + 60
= 0 for a max of area
-4x + 60 = 0
x = 15
then y = 30
the width has to be 15 m, and the length has to be 30 m for a maximum area of 15(30) or 450 m^2.
I believe you can look this up , and it has the answers that’s what I always do! Just look up the problem and it should show up! If it doesn’t I’ll help (:
It takes 4 hours for the trains to be 600 miles apart