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3 years ago

Which terms in the expression are like terms?

Mathematics

1 answer:

Debora [2.8K]3 years ago

3 0

I think a is like coz we can take common [ -b ] from all the terms

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Customers arrive at a grocery store at an average of 2.1 per minute. Assume that the number of arrivals in a minute follows the

Black_prince [1.1K]

Answer:

a) P(2)=0.270

b) P(X>3)=0.605

c) P=0.410

Step-by-step explanation:

We know that customers arrive at a grocery store at an average of 2.1 per minute. We use the Poisson distribution:

$\boxed{P(k)=\frac{\lambda^k \cdot e^{-\lambda}}{k!}}$

a) In this case: $\lambda=2.1$

$P(2)=\frac{2.1^2 \cdot e^{-2.1}}{2}\\\\P(2)=0.270$

Therefore, the probability is P(2)=0.270.

b) In this case: $\lambda=2\cdot 2.1=4.2$

$P(X>3)=1-P(X\leq 3)\\\\P(X>3)=1-\sum_{x=0}^3 \frac{4.2^x \cdot e^{-4.2}}{x!}\\\\P(X>3)=1-0.395\\\\P(X>3)=0.605$

Therefore, the probability is P(X>3)=0.605.

c) We know that two customers came in in the first minute. That is why we calculate the probability of at least 5 customers entering the other 2 minutes.

In this case: $\lambda=2\cdot 2.1=4.2$

$P(X\geq 5)=1-P(X$

Therefore, the probability is P=0.410.

4 0

3 years ago

URGENT<br><br>What is the value of x?

oksano4ka [1.4K]

Answer:

Step-by-step explanation: miane

Sumida

8 0

3 years ago

P=12 when q=8 and r=3

guapka [62]

<h3>we can make the below formulas with this information:</h3>

$1. \frac{p}{q} = r \\ 2.q \times r = p \\ 3. \frac{p}{r} = q \\ 4.\frac{q \times r}{p} = 1$

<h3>hope it helped you :-)</h3>

8 0

3 years ago

Someone Please help!!

Lerok [7]

I just can help u with
D: all real numbers
R: [3,infinity)
y -intercept :(0,4)
max.: none
min.: (1,3)

5 0

3 years ago

A school year consists of 179 days. A school day tasks for 450 minutes.how many minutes are in one year of school?

skad [1K]

450 x 179 = 80,550 is your answer

7 0

3 years ago

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