2 years ago

What is the length of side s of the square shown below? 45° 6 30

Mathematics

1 answer:

Darya [45]2 years ago

7 0

Answer:

The correct answer should be D.

Step-by-step explanation:

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3 years ago

What is 100,000×500+8,000

Galina-37 [17]

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3 years ago

Write the ratio as a fraction in simplest form 12 : 42

Leona [35]

Answer:

2:7

Step-by-step explanation:

12:42

6:21

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3 years ago

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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

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

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3 years ago