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3 years ago

1 n +5 - 1 n2 + n n2 +n n-6 n +1

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

6 0

1). 1n+5-1
N=26
2). n2+n n2+n
n3+n2+n

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36% of a number is 63.Find 124% of the number

Trava [24]

Answer:

217

Step-by-step explanation:

124%=x

36%=63

=> $x=\dfrac{63\times 124}{36}=217$

5 0

3 years ago

The explicit formula for a sequence is

MAXImum [283]

Step-by-step explanation:

$\because \: a_n = - 1 + 3(n - 1) \\ \\ \therefore \: a_{55} = - 1 + 3(55 - 1) \\ \\ \therefore \: a_{55} = - 1 + 3 \times 54 \\ \\ \therefore \: a_{55} = - 1 + 162\\ \\ \huge \blue { \boxed{\therefore \: a_{55} = 161}}\\ \\$

Hence, the 55th term of the sequence is 161.

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3 years ago

Grasshoppers are distributed at random in a large field according to a Poisson process with parameter a 5 2 per square yard. How

HACTEHA [7]

In this question, the Poisson distribution is used.

Poisson distribution:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

Parameter of 5.2 per square yard:

This means that $\mu = 5.2r$ , in which r is the radius.

How large should the radius R of a circular sampling region be taken so that the probability of finding at least one in the region equals 0.99?

We want:

$P(X \geq 1) = 1 - P(X = 0) = 0.99$

Thus:

$P(X = 0) = 1 - 0.99 = 0.01$

We have that:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 0) = \frac{e^{-5.2r}*(5.2r)^{0}}{(0)!} = e^{-5.2r}$

Then

$e^{-5.2r} = 0.01$

$\ln{e^{-5.2r}} = \ln{0.01}$

$-5.2r = \ln{0.01}$

$r = -\frac{\ln{0.01}}{5.2}$

$r = 0.89$

Thus, the radius should be of at least 0.89.

Another example of a Poisson distribution is found at brainly.com/question/24098004

3 0

3 years ago

Please help!!!!!!!!!!

defon

Answer: 90 + 4, third choice and 90 - -4, last choice

Her score is obviously higher when the mistake is fixed, adding the 4 points gives 94.

3 0

2 years ago

Write 61/4℅ as a decimal

marta [7]

61/4 % converted into a decimal is 15.25

3 0

3 years ago