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2 years ago

Find the product 1/3 × 4/5

Mathematics

2 answers:

vfiekz [6]2 years ago

7 0

Answer:

0.26666666666

Step-by-step explanation:

because u have to multiply it and that's your answer

Delvig [45]2 years ago

6 0

Answer:

4/15 is the answer. i need 3 more brainliests! please make that two!

Step-by-step explanation:

You might be interested in

For X a binomial random variable with n=5 and p=1/4, answer the following

mash [69]

Recall that for $X\sim\mathrm{Bin}(n,p)$ , i.e. a random variable $X$ following a binomial distribution over $n$ trials and with probability parameter $p$ ,

$\mathbb P(X=x)=f_X(x)=\begin{cases}\dbinom nx p^x(1-p)^{n-x}&\text{for }x\in\{0,1,\ldots,n\}\\\\0&\text{otherwise}\end{cases}$

So you have

$\mathbb P(X=2)=\dbinom52\left(\dfrac14\right)^2\left(1-\dfrac34\right)^{5-2}=\dfrac{135}{512}\approx0.26$

$\mathbb P(2\le X\le4)=\displaystyle\sum_{x=2}^4\mathbb P(X=x)$
$=\dbinom52\left(\dfrac14\right)^2\left(1-\dfrac14\right)^{5-2}+\dbinom52\left(\dfrac14\right)^3\left(1-\dfrac14\right)^{5-3}+\dbinom52\left(\dfrac14\right)^4\left(1-\dfrac14\right)^{5-4}$
$=\dfrac{375}{1024}\approx0.37$

The expected value of $X\sim\mathrm{Bin}(n,p)$ is simply $np$ , while the standard deviation is $\sqrt{np(1-p)}$ . In this case, they are $\dfrac54=1.25$ and $\sqrt{\dfrac{15}{16}}\approx0.97$ , respectively.

7 0

3 years ago

To form

Andreas93 [3]

Answer:

40 toothpicks

Step-by-step explanation:

3 times 4 equals 12, so I would multiply 10 times 4 and get 40.

7 0

3 years ago

13. Given the following historical data and weights of .5, .3, and .2, what is the three-period weighted moving average forecast

Ostrovityanka [42]

Answer:

b. 144.8

Step-by-step explanation:

When calculating the moving average estimate of an observation , each of the observations are usually computed with the same weighted . In some cases, it is beneficial to assign different weight on the observations such that the observation closer to the time period being forecast, has higher weight. This is refer to as weighted moving average technique. The sum of the individual weight in a weighted moving average technique must equal to 1.

The three-period weighted moving average forecast for period 5 = 144*0.5 + 148 *0.3 + 142 *0.2 = 144.8

4 0

3 years ago

Factor completely. x2+7x−18 Answer now PLZZZZZ

zimovet [89]

Answer: ( − 2) ( + 9)

4 0

3 years ago

Please help me with this! I will mark you as brainliest!

erastovalidia [21]

Step-by-step explanation:

$\frac{ {5}^{3} }{ {5}^{7} }$