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zlopas [31]
3 years ago
11

Calculate the probability of needing at least 5 tosses of an unbiased coin to land a head.

Mathematics
1 answer:
Gnom [1K]3 years ago
4 0

Answer:

0.03125

Step-by-step explanation:

If we have a fair coin the probability of landing a head is 50%.

We can think the question as what is the probability of landing four tails and then a head. That is we needed at least 5 tries to get a head.

Prob \{ T,T,T,T,H\}

Since this events are independent we can write it as

Prob \{ T\} \times Prob \{ T\} \times Prob \{ T\} \times Prob \{ T\} \times Prob \{ H\} =.5^5= 0.03125

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What is the next term in the sequence?
Whitepunk [10]

Answer:

3750

Step-by-step explanation:

each number is being multiplied by five

6*5=30

30*5=150

150*5=750

750*5= 3750

6 0
3 years ago
Find the distance between the two points~<br>A ( 7 , 4 ) and B ( 3 , 2 )<br><br><br>thankyou!​
vodka [1.7K]

Answer:

AB = \sqrt{20}

Step-by-step explanation:

calculate the distance using the distance formula

d = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = B (3, 2 ) and (x₂, y₂ ) = A (7, 4 )

AB = \sqrt{(7-3)^2+(4-2)^2}

     = \sqrt{4^2+2^2}

     = \sqrt{16+4}

     = \sqrt{20}

     ≈ 4.47 ( to 2 dec. places )

6 0
2 years ago
Read 2 more answers
Show how to solve the problem 378 x 6 using place value with regrouping. Explain how you knew when to regroup.
KIM [24]

<u>Answer</u>

2,268


<u>Explanation</u>

<u> </u>

<u>By grouping 378 ca</u>n be written as,

378 = 300 + 70 + 8

6× 378 = 6 × (300 + 70 + 8)

             = (6×300) + (6×70) + (6×8)

             = 1800 +  420 + 48

              = 2,268

8 0
3 years ago
The temperature in Ottawa starts at -4°C, rises 14°C, and then falls 8°C. What is the final temperature?
Molodets [167]

Answer:

2C

Step-by-step explanation:

-4C+14C=10C

10C-8C=2C

3 0
3 years ago
Read 2 more answers
Abbi has $400 in $5 bills. If she has 38 bills, how many of them are $20?
Sergio039 [100]
F=5 dollar bills
t=twent dollar bills

38 total bills
f+t=38

400 in bills
400=5f+20t

we have
f+t=38
5f+20t=400
multipy first equation by -5 and add to second equation

-5f-5t=-190
5f+20t=400 +
0f+15t=210

15t=210

divide both sides by 15
t=14

subsitute
t+f=38
15+f=38
f=23


23 five dolar bills
15 twenty dollar bills
3 0
3 years ago
Read 2 more answers
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