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3 years ago

Solve two sevenths plus seven fourteenths

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

7 0

Answer:

Step-by-step explanation:

i took the test

alisha [4.7K]3 years ago

5 0

Answer:

Eleven Fourteenths

Step-by-step explanation:

Convert 2/7 into 4/14 to get a common denominator then add 4 and 7 to get 11/14

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An exponential random variable has a standard deviation of 16. Calculate The probability that it takes on a value < 11. Use 3

antiseptic1488 [7]

Answer:

$P(X$

And using the cdf we got:

$P(X$

Step-by-step explanation:

Previous concepts

The exponential distribution is "the probability distribution of the time between events in a Poisson process (a process in which events occur continuously and independently at a constant average rate). It is a particular case of the gamma distribution". The probability density function is given by:

$P(X=x)=\lambda e^{-\lambda x}, x>0$

And 0 for other case. Let X the random variable that represent the random variable of interest and we know that the distribution is given by:

$X \sim Exp(\lambda)$

We know the variance on this case given by :

$Var(X) = \frac{1}{\lambda^2}$

So then the deviation is given by:

$Sd(X) = \frac{1}{\sqrt{\lambda}}$

And if we solve for $\lambda$ we got:

$\lambda = (\frac{1}{16})^2 = \frac{1}{256}$

The cumulative distribution function for the exponential distribution is given by:

$F(x) = 1- e^{-\lambda x}$

Solution to the problem

And for this case we want to find this probability:

$P(X$

And using the cdf we got:

$P(X$

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3 years ago

It takes has a 20 minutes to walk to school . it takes Andre 80% as long to walk to school how long dose it take Andre to walk t

Blizzard [7]

You have to find 80% of 20.
Since 80% is equal to 0.8, you multiply 20 by 0.8 to get 16

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3 years ago

A boat can travel 423 miles on 47 gallons of gasoline. How much

Readme [11.4K]

Answer:

Step-by-step explanation:

i done the butterfly method

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3 years ago

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Determine the common ratio and find the next three terms of the geometric sequence t8, t5, t2

attashe74 [19]

The common ratio of the given geometric sequence is the number that is multiplied to the first term in order to get the second term. Consequently, this is also the number multiplied to the second term to get the third term. This cycle goes on and on until a certain term is acquired. In this item, the common ratio r is,

r = t⁵/t⁸ = t²/t⁵

The answer, r = t⁻³.

The next three terms are,

n₄ = (t²)(t⁻³) = t⁻¹
n₅ = (t⁻¹)(t⁻³) = t⁻⁴
n₆ = (t⁻⁴)(t⁻³) = t⁻⁷

The answers for the next three terms are as reflected above as n₄, n₅, and n₆, respectively.

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4 years ago

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The man is pushing with a force of 75 N. The rock is not moving. This is an example of what kind of force?

Oksi-84 [34.3K]

Kinetic energy
Pushing is energy in motion and energy in motion is classified as (KE) kinetic energy

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3 years ago