3 years ago

PLEASE HELP ASAP!!

Mathematics

1 answer:

Marianna [84]3 years ago

8 0

Five plus four x is equal to 2x-9

You might be interested in

What is the volume of the cylinder?

AVprozaik [17]

$V_{cylinder}= \pi r^2 l$

8 0

3 years ago

How many duckling were swimming at the pond?

EleoNora [17]

Answer:

There are 20 ducklings.

Step-by-step explanation:

For every group of 6 ducks, 5 would be ducklings.

24 / 6 = 4

There are 4 groups of ducks.

5 * 4 = 20

4 0

3 years ago

the mgf of a random variable x is e^3(e^t-1). Find P[mean - standard deviation squared < X < 1/2( mean + standard deviatio

postnew [5]

The given MGF is that for a random variable following a Poisson distribution with parameter $\lambda=3$ .

This means $\mathbb E(X)=\mathbb V(X)=\lambda$ , and $X$ has PMF

$f_X(x)=\begin{cases}\dfrac{3^xe^{-3}}{x!}&\text{for }x\ge0\\0&\text{otherwise}\end{cases}$

So, the desired probability is

$\mathbb P\left(\lambda-\lambda^2$

This is equivalent to

$\displaystyle\sum_{x=0}^2\mathbb P(X=x)=\sum_{x=0}^2\frac{3^x}{x!e^3}=\frac{17}{2e^3}\approx0.4232$

8 0

3 years ago

Solve the system of equations.<br> 3x 2 y = 2<br> x+7y=4

lions [1.4K]

4/7 the question is relative

8 0

3 years ago

Help<br> What is the slope of the line on the graph?

Galina-37 [17]

Slope = (Y2-Y1) / (X2-X1)
hope that's helpful

6 0

2 years ago