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Black_prince [1.1K]

3 years ago

10

I NEED HELP PLZ HELP ME ?

2 answers:

Blizzard [7]3 years ago

4 0

The answer is 50 I hope this helps!

bazaltina [42]3 years ago

3 0

I think it is D, unit rate is how many c per 50 h, and unit rate is how many per one unit.

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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

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

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3 years ago

What is the common ratio of the geometric sequence; *

Tanya [424]

Answer:

C

Step-by-step explanation:

The common ratio r of a geometric sequence is

r = $\frac{a_{2} }{a_{1} }$ = $\frac{\frac{10}{3} }{10}$ = $\frac{10}{3}$ × $\frac{1}{10}$ = $\frac{1}{3}$ → C

3 0

3 years ago

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At a restaurant the bill was $35.10 with a 15% tip added on. How much is the total bill, rounded to the nearest whole cent?

blondinia [14]

Answer:

15% = 0.15

35.10 * (1 + 0.15) = $40.37

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3 years ago

Freeeeeeeeeeeeeeeeeeeeeee points

LuckyWell [14K]

Answer:

heyyy

Step-by-step explanation:

heyyyy im just here to help in getting them pts because im smart like that :)

7 0

3 years ago

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Someone please help !!easy !

r-ruslan [8.4K]

Answer:

B) 0, 4, 8, 12

Step-by-step explanation:

If you buy no pumpkins is costs $0. If you buy one pumpkin it costs $4. If you buy two pumpkins it costs $8. If you buy three pumpkins it costs $12.

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3 years ago