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3 years ago

DOES ANYONE KNOW THIS?

Mathematics

1 answer:

marishachu [46]3 years ago

7 0

Answer:

Step-by-step explanation:

This function actually has two solutions in the given interval, at {5, 7}; at both of these x-values, the function value is 1.

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F(x)= 3x+5....what is f(2)

arlik [135]

Answer:

the answer is 11

Step-by-step explanation:

3(2)+5=11

5 0

3 years ago

Select the equations that are equivalent to the equation y-4=(x+2)

stiv31 [10]

All you have to do basically is make up an equation of your own and then plug in the numbers inplace of the variables while still keeping the equation true.

The answer can be anything from : 8-4= 2+2
And all you had to do was simply plug in numbers to make it true. Hoped i helped!

3 0

2 years ago

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

In 2011, Americans spent approximately $50.9 billion on their pets. Of this amount, $14.1 billion was for veterinarian bills. Wh

alex41 [277]

Answer: The percent of the total was spent on veterinarian bills is 27.70% ( approx).

Step-by-step explanation:

Given, In 2011, Americans spent approximately $50.9 billion on their pets.

i.e. Total amount they spent on pets = $50.9 billion

Amount spent for veterinarian bills. = $14.1 billion was for veterinarian bills.

Then, the percent of the total was spent on veterinarian bills would be :

$\dfrac{\text{Amount spent for veterinarian bills. }}{\text{Total amount they spent on pets}}\times100\\\\=\dfrac{14.1}{50.9}\times100\\\\=27.7013752456\approx27.70\%$

Hence, the percent of the total was spent on veterinarian bills is 27.70% (approx).

5 0

3 years ago

Kellie is playing with a toy building block that has the shape of a rectangular prism.

Lena [83]

I think the volume is 200

3 0

3 years ago