For quarters we have:
Where,
x: number of quarters
Clearing x we have:
For nickels we have:
Where,
y: number of nickels
Clearing y we have:
Then, the ratio of quarters to nickels is:
Simplifying we have:
Answer:
The ratio of quarters to nickels in a dollar is:
binomial(16 + 7, 16) 2^(-(16 + 7)) = ((16 + 7)!)/(16! 7! 2^(16 + 7)) = 245157/8388608 ≈ 0.02922 ≈ 1/34.22
(assuming children are independent and male and female are equally likely)
| probability
less than 16 boys | 0.9534
16 or less boys | 0.9827
more than 16 boys | 0.01734
16 or more boys | 0.04657
fraction of boys | 16/(16 + 7) ≈ 0.695652
fraction of girls | 7/(16 + 7) ≈ 0.304348
expected value | 11.5
standard deviation | 2.398
variance | 5.75
11.5
3x = 24 - 9
3x = 15
x = 15/3
x = 5
Answer: B) x= 5 or the second option.
Hi,
That means on 2 frogs in some group there are 5 turtles.
Hope this helps.
r3t40
Volume of cylinder=πr²h volume of another cylinder=πr²h
=22/7×1.5×1.5×8 =22/7×2.5×2.5×12
=396/7 =1560/7
=56.57 =235.71
=235.71-56.57
=179.14 amount of water is able to hold by the larger cylinder
