1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Keith_Richards [23]
3 years ago
14

8+[13-(2+1)] ????????

Mathematics
1 answer:
IgorLugansk [536]3 years ago
3 0

2+1=3

13-3=10

8+10=18

You might be interested in
If a fair coin is tossed 4 times, there are 16 possible sequences of heads (H) and tails (T). Supposethe random variable X repre
postnew [5]

Answer:

The probability distribution of X is:

P(x=0)=0.0625\\\\P(x=1)=0.25\\\\P(x=2)=0.375\\\\P(x=3)=0.25\\\\P(x=4)=0.0625\\\\

Step-by-step explanation:

"Tossing a coin and getting H" can be modelled as a Bernoulli random variable. The variable X is a sum of 4 of this Bernoulli variables, we can model X as a binomial random variable, with p=0.5 and n=4.

The values X can take are: 0, 1, 2, 3 and 4.

The values of this probability are calculated as:

P(x=0) = \binom{4}{0} p^{0}q^{4}=1*1*0.0625=0.0625\\\\P(x=1) = \binom{4}{1} p^{1}q^{3}=4*0.5*0.125=0.25\\\\P(x=2) = \binom{4}{2} p^{2}q^{2}=6*0.25*0.25=0.375\\\\P(x=3) = \binom{4}{3} p^{3}q^{1}=4*0.125*0.5=0.25\\\\P(x=4) = \binom{4}{4} p^{4}q^{0}=1*0.0625*1=0.0625\\\\

Where

p: is the probability of tossing a coin and getting a Heads

q: is the probability of tossing a coin and not getting a Heads.

The binomial number is a way to calculate the possible combinations of getting a certain amount of heads.

For example, in 4 tosses, there are 6 ways or combinations of getting 2 heads and 2 tails:

\binom{4}{2}=\frac{4!}{2!(4-2)!}=\frac{24}{2*2}=6

8 0
3 years ago
Add.
Arisa [49]
A. You add. Hopefully this is right
7 0
3 years ago
**70 POINTS** NO GUESSING
Ira Lisetskai [31]
The answer is B, if you try searching general to standard form there's lots of useful tutorials. Wikihow is good. 
7 0
3 years ago
Read 2 more answers
The sum of the number is -44.84 one of the numbers is 24.6 the other two numbers are equal to eat other what is the value of eac
nikklg [1K]
The answer is -34.72. I have attached a picture of the work. I hope this helps. :)

3 0
3 years ago
Can anyone help me with this please ?
zlopas [31]
   
\displaystyle \bf\\
 \frac{x}{20} =  \frac{14}{25}  \\  \\  \\ 
x =  \frac{14 \cdot 20}{25} =  \frac{280}{25} = 11,2 \sim \boxed{10} ~~\text{(rounded to the nearest tenth)}



7 0
3 years ago
Other questions:
  • I really need your help
    6·1 answer
  • What number :Increased by 130% is 69 i rlly need help!!!
    7·2 answers
  • What is (-1) to the 39 power
    10·2 answers
  • the biologic is expecting the number of salmon to raise during salmon season if the ratio stays the same and he expect 120 steel
    12·1 answer
  • Find the quotient.<br><br><br> 3.6÷0.08
    12·1 answer
  • Suppose 360 nursing students took a certification test...
    12·2 answers
  • All diagonals from a single vertex of a hexagon are drawn. Four triangles will result. True or False.
    14·1 answer
  • Please help me out with this I don’t understand it
    10·1 answer
  • Which of the following is equal to 250 milliliters?
    14·1 answer
  • The expression (8+8+8+8+8)−(6+6+6+6+6) is equal to 10 .
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!