Write a wordy problem for b = 2a - 6

Mathematics

1 answer:

Anettt [7]3 years ago

6 0

John got 6 apples he gave 2a of them to Pan he is left with b.

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GEOMETRY. I need help Is this right or not?

meriva

Answer:

Step-by-step explanation:

yea...................

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3 years ago

Find the number if:<br> 1 2/3 % of it is 4.75<br><br> Find the number if:<br> 900% of it is 450

olchik [2.2K]

Your answers will be
a)38.62

and

b)50

8 0

3 years ago

Read 2 more answers

The area of a rectangular playground enclosure at francis lewis hw is 500 square meters. the lenght of the playground is 5 meter

Alex Ar [27]

A=L*W
L=W+5
A=(W+5)W
500=W²+5W
W²+5W-500=0

W=(-5+/-√(25+4*500))/2=(-5+/-√2025)/2=(-5+/-45)/2
we are going to take only positive value, so W=(-5+45)/2=20
L=W+5=20+5=25
W=20,
L=25

7 0

4 years ago

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

Max sprints forward 10 feet and then stops and sprints

gogolik [260]

Max sprints forward 10 feet (+10), and then stop and sprints back 15 feet (-15)

10 - 15 = -5

max is five feet below where he started

3 0

4 years ago