4.5 lbs of carnitas / 15 sweet rolls

Write the first five terms of the sequence defined by the explicit formula an=21-2n^2

Rus_ich [418]

The answer to the squence is either d or a i believe

8 0

4 years ago

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A random variable X has a Poisson distribution with a mean of 3. What is the probability that X P(1≤X≤3) ?.

frosja888 [35]

Answer:

P(1≤X≤3) = 0.5974

Step-by-step explanation:

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.

Mean of 3

This means that $\mu = 3$

P(1≤X≤3) ?

$P(1 \leq X \leq 3) = P(X = 1) + P(X = 2) + P(X = 3)$

So

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

$P(X = 1) = \frac{e^{-3}*3^{1}}{(1)!} = 0.1494$

$P(X = 2) = \frac{e^{-3}*3^{2}}{(2)!} = 0.2240$

$P(X = 3) = \frac{e^{-3}*3^{3}}{(3)!} = 0.2240$

So

$P(1 \leq X \leq 3) = P(X = 1) + P(X = 2) + P(X = 3) = 0.1494 + 0.2240 + 0.2240 = 0.5974$

4 0

3 years ago

Pls help or explain steps

Tems11 [23]

Solving for a variable means to rewrite the equation so that the desired variable is alone on one side. So, we have to "move" all the other variables/constants in order to make this happen. We are allowed to add/subtract the same quantity from both sides, or to multiply/divide both sides by any non-zero number.

Let's start with the first example: we are given

11. $d=rt$

the variable $r$ is not alone on the right hand side because it is multiplied by $t$ . We can reverse this by dividing both sides by $t$ : the equation becomes

$\dfrac{d}{t}=\dfrac{rt}{t}=r$

So, we have written the equation as $r=\frac{d}{t}$ , which means that $r$ now sits alone on one side of the equation, and thus we have solved the equation for $r$ !

Similarly, we do all the others:

12. $f=v+at$

Subtract $at$ from both sides to get

$f-at=v$

13. $Ax+By=C$

Subtract $By$ from both sides to get

$Ax=C-By$

Now divide both sides by $A$ to get

$x = \dfrac{C-By}{A}$

14. $A=\frac{1}{2}Pl$

Multiply both sides by 2:

$2A=Pl$

Divide both sides by $P$ :

$\dfrac{2A}{P}=l$

4 0

3 years ago

Read 2 more answers

Find the value of x. Show all work.

Viefleur [7K]

Answer and Step-by-step explanation:

Answer and Step-by-step explanation:

We are given an isosceles triangle, shown by the fact that there are two red marks on two sides, indicating that the sides are congruent in length, which means the base angles are congruent as well.

Add the angles together and equal it to 180.

34 + x + 81 + x + 81 = 180

Simplify.

115 + 2x = 180

Subtract 115 from both sides of the equation.

2x = 65

Divide both sides of the equation by 2.

x = 32.5 is the answer.

#teamtrees #PAW (Plant And Water)

8 0

3 years ago

"Hang time" is the time you are suspended in the air during a jump. Your hang time t in seconds is

Artyom0805 [142]

Answer:

2.5/5V

Step-by-step explanation:

Given the expression for hang time t = 5Vh

A kite sailor has a hang time of 2.5 secs

Height of the kite’s sailor’s jump = ?

Therefore 2.5 = 5Vh

Divide both sides by 5V

2.5/5V = h

h = 2.5/5V

4 0

3 years ago