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2 years ago

+) Amusement Parks You are trying to decide whether to pay $120 for a a

Mathematics

1 answer:

anzhelika [568]2 years ago

7 0

Answer:

until 49 visits has been made, that is when the cost of visiting with the season pass will be less than the cost of visiting without the season pass

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Q 1 please anybody help me

vagabundo [1.1K]

7*7*7*7

2401

You just do 7 times 7 times 7 times 7

6 0

3 years ago

Read 2 more answers

An item was marked down 60% from its original price. The amount of the discount was $30. Fill in the numbers that belong in the

fiasKO [112]

Answer:

A= 30, B= 20, C= 50

Step-by-step explanation:

Just took test

8 0

3 years ago

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 2643 miles, with a standard

musickatia [10]

Answer:

$P(2643-51< \bar X < 2643+51)= P(2592< \bar X$

And we can use the z scoe formula given by:

$z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for the limits we got:

$z = \frac{2592-2643}{\frac{368}{\sqrt{44}}}= -0.919$

$z = \frac{2694-2643}{\frac{368}{\sqrt{44}}}= 0.919$

And this probability is equivalent to:

$P(-0.919$

Step-by-step explanation:

For this case we can define the random variable X as "number of miles between services" and we know the following info given:

$\mu = 2643 , \sigma = 368$

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

We select a random sample size of n =44. And we want to find this probability:

$P(2643-51< \bar X < 2643+51)= P(2592< \bar X$

And we can use the z scoe formula given by:

$z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for the limits we got:

$z = \frac{2592-2643}{\frac{368}{\sqrt{44}}}= -0.919$

$z = \frac{2694-2643}{\frac{368}{\sqrt{44}}}= 0.919$

And this probability is equivalent to:

$P(-0.919$

4 0

2 years ago

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

umka2103 [35]

Answer:

x^2 +23x +49

Step-by-step explanation:

Find the area of the large rectangle

(x+10) * (2x+5)

FOIL

2x^2 +5x+20x+50 = 2x^2 +25x +50

Find the area of the unshaded square

(x+1) (x+1)

FOIL

x^2 +x+x+1 = x^2 +2x+1

To find the area of the shaded region

Take the area of the large rectangle and subtract the area of the square

2x^2 +25x +50 - (x^2 +2x+1)

Distribute the minus sign

2x^2 +25x +50 - x^2 -2x-1

Combine like terms

x^2 +23x +49

5 0

3 years ago

Samantha’s younger brother just turned 3 years old. Fred’s brother is now 30 months old. Who brother is older? Explain

Alina [70]

1. You have that:

- Samantha’s younger brother turned 3 years old.
- Fred’s brother is 30 months old.

2. one (1) year has twelve (12) months. Keeping this on mind, you have to follow the proccedure below:

3 yearsx12 months=36 months

3. As you can see, Samantha’s younger brother just turned 36 months old and Fred’s brother is 30 months old. Therefore, you can conclude that Samantha’s younger brother is older than Fred’s brother.

6 0

2 years ago