3 years ago

Helppppppppppppppppp

Mathematics

1 answer:

galben [10]3 years ago

5 0

Answer:

Step-by-step explanation:

You might be interested in

A student randomly guesses on 10 true/false questions. use the binomial model to determine the probability that the student gets

lana [24]

Answer:

$P(5)=\frac{63}{256}$

Step-by-step explanation:

we are given

A student randomly guesses on 10 true/false questions

so,

$n=10$

there only true and false

so, probability getting true question is

$p=\frac{1}{2}$

so, probability getting false question is

$q=\frac{1}{2}$

the student gets 5 out of 10 questions right

so,

r=5

we can use binomial probability formula

$P(r)=\frac{n!}{r!(n-r)!} p^rq^{n-r}$

now, we can plug values

$P(5)=\frac{10!}{5!(10-5)!} (\frac{1}{2})^5(\frac{1}{2})^{10-5}$

we can simplify it

and we get

$P(5)=\frac{63}{256}$

4 0

3 years ago

Write an equation that models the sequence 400, 200, 100, 50, ...

grandymaker [24]

The sequence is probably ×2

4 0

3 years ago

A quick way to convert from Fahrenheit temperature to Celsius temperature is to subtract 30,then divide by 2.Use this method to

Gnoma [55]

Oof idk if u like bts but I saw ur username said jiminahh

3 0

3 years ago

VXYZ is a kite. What is the length of XY?

olga nikolaevna [1]

Answer:

$5x - 6 = 3x + 4 \\ 5x - 3x = 4 + 6 \\ 2x = 10 \\ x = 10 \div2 \\ x = 5 \\ length \: of \: xy = 3 \times 5 + 4 \\ = 15 + 4 \\ = 19$

8 0

3 years ago

Read 2 more answers

Please help i am panicking

vaieri [72.5K]

Answer:

Step-by-step explanation:

5 0

3 years ago