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stepladder [879]
3 years ago
13

4. A coin is tossed 4 times. What is the probability of getting exactly 3 heads?

Mathematics
2 answers:
aalyn [17]3 years ago
5 0

Answer:1/2, 50%, 2/4

Step-by-step explanation:a coin has two sides and your tossing it 4 times so you just divide it by 2 and you get 2

Veseljchak [2.6K]3 years ago
3 0

Answer:

A coin is tossed 4 times. So the sample space is {HHHH, HHHT, HHTT, HTTT, TTTT, TTTH, TTHH, THHH, HTHT, THTH, HTHH, HHTH, HTTH, THHT, THTT, TTHT}

There are 16 sample points. This can be found out by knowing how many objects(or times the same object) is tossed/rolled(for a dice). Sample points = (Outcomes)^no. Of times

16 = 2^4

The answer is 4/16 = 1/4

Hope this helps!

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The product of 86 and the depth of the river
aniked [119]

Answer:

Step-by-step explanation:

Are you trying to find a variable expression? the product of 86 means multiplication so 86*n or 86n. Other than that I dont understand the question.

4 0
2 years ago
The pressure and volume of an expanding gas are related by the formula PV^b=C, where b and C are constants (this holds in adiaba
bazaltina [42]

The dP/dt of the adiabatic expansion is -42/11 kPa/min

<h3>How to calculate dP/dt in an adiabatic expansion?</h3>

An adiabatic process is a process in which there is no exchange of heat from the system to its surrounding neither during expansion nor during compression

Given b=1.5, P=7 kPa, V=110 cm³, and dV/dt=40 cm³/min

PVᵇ = C

Taking logs of both sides gives:

ln P + b ln V = ln C

Taking partial derivatives gives:

\frac{1}{P}\frac{∂P}{∂t}  + \frac{b}{V}\frac{∂V}{∂t} = 0

Substitutituting the values b, P, V and dV/dt into the derivative above:

1/7 x dP/dt +  1.5/110 x 40 = 0

1/7 x dP/dt +  6/11 = 0

1/7 x dP/dt = - 6/11

dP/dt = - 6/11 x 7

dP/dt = -42/11 kPa/min

Therefore, the value of  dP/dt is -42/11 kPa/min

Learn more about adiabatic expansion on:

brainly.com/question/6966596

#SPJ1

4 0
1 year ago
Really need help with this problem
liq [111]

Answer:

29.24

Step-by-step explanation:

p= 27

b= 48

now finding the value of x,

tanx°= p/b

=27/48

=0.56

now,

x°= tan-¹ 0.56

= 29.24

8 0
2 years ago
Out of a 52 deck of cards what's the probability that you pull a card above a jack
bazaltina [42]

Answer: 3/13

Step-by-step explanation:

There are 12 cards above the jack in a deck of 52 cards

Probability = 12/52 = 3/13

7 0
2 years ago
In a survey of 300 college graduates 53 reported that they entered a profession closely related to their college major. if 9 of
bija089 [108]

Answer:

what are the choices?

Step-by-step explanation:

3 0
3 years ago
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