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andrey2020 [161]
3 years ago
8

Emily has a coin with P(H) = pi and Pete has a coin with P(H) = P2. Emily tosses her coin n times, and denote the number of head

s by X. Now Pete tosses his coin X times. What should be the distribution of the number of heads that Pete gets? Try to answer this question from two different approaches.
(a) Answer this question by constructing suitable binomial experiments.
(b) Answer this question by direct calculation. This is a challenging task. Hint: Try to use the binomial expansion xkym-k = (x + y)", k k=o. which holds for ALL positive integers m and real numbers x, y.

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
8 0

Answer:

Attached is the solution.

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Write the standard equation of each circle <br> Center (-3,2); r=10
erica [24]
\bf \textit{equation of a circle}\\\\&#10;(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2&#10;\qquad center\ ({{ h}},{{ k}})\qquad&#10;radius={{ r}}

you're given all those values, h,k and r, so just plug them in
3 0
3 years ago
Please help me! Thank you if you do!
lesya692 [45]

Answer:

it is C

Step-by-step explanation:

why because look at the numbers and youll understand

4 0
3 years ago
Read 2 more answers
The half-life of the radioactive elements unobtanium -41 is 5 seconds. If 48 grams of unobtanium -41 are initially present, how
Igoryamba

Answer:

the remaining mass of unobtanium -41 after a 5 seconds, 10 seconds, 15 seconds and 20 seconds is 24 gr, 12 gr , 5.33 gr and 3 gr respectively

Step-by-step explanation:

the equation that governs the remaining mass m of unobtanium -41 after a time t is

m=m₀*2^(-t/T) , where t is in seconds ,m₀ represents initial mass and T=half-life

Therefore

a) for t=5 s

m=48 gr*2^(-t/5 s) = 48 gr*2^(-5 s/5 s) = 48 gr/2 = 24 gr

b)  for t=10 s

m=48 gr*2^(-t/5 s) = 48 gr*2^(-10 s/5 s) = 48 gr/4 = 12 gr

b)  for t=15 s

m=48 gr*2^(-t/5 s) = 48 gr*2^(-15 s/5 s) = 48 gr/9 = 5.33 gr

b)  for t=20 s

m=48 gr*2^(-t/5 s) = 48 gr*2^(-20 s/5 s) = 48 gr/16 = 3 gr

thus the remaining mass of unobtanium -41 after a 5 seconds, 10 seconds, 15 seconds and 20 seconds is 24 gr, 12 gr , 5.33 gr and 3 gr respectively

8 0
4 years ago
Jessica has $35.She gives 2/5 oh her money to her sister.How much money did she give her sister?
omeli [17]
She gave $14 to her sister.

Explanation:
The word "of" in fraction word problems USUALLY signals for you to multiply. So, we want to find 2/5 of 35, so we multiply 2/5 x 35. That gives us 14, therefore she gave $14 to her sister
6 0
3 years ago
QUESTION 2
mihalych1998 [28]

One piece will be length x and the other piece will be 20 cm longer, so it will be x + 20 cm long.  

Added together the length of these two boards will equal 86 cm. So you can write an equation:  

x + (x + 20) = 86  

Remove the parentheses and add the two x's together to get:  

2x + 20 = 86

Subtract 20 from both sides:  

2x = 66  

Divide both sides by 2 and you have:  

x = 33  

The short piece is 33 cm and the other piece is 20 cm longer or 33 + 20 = 53 cm.

3 0
3 years ago
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