Four biased coins, A, B, C and D are thrown. The probability that each coin will land on Heads is shown below:

Coin A 0.33
Coin B 0.033
Coin C 1/3
Coin D 30%

(a) Which coin is most unlikely to land on Heads?

(b) Which coin is most likely to land on Heads?

(c) Coin B is going to be thrown 4000 times.
Work out an estimate for the number of times coin B will land on Heads

I uploaded the answer to a file hosting. Here's link:

https://cutt.ly/Kzv78uJ

А іді

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0