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3 years ago

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Andy rented a trailer for 2 days and a bicycle for 3 days for a total of $145. Jason rented a trailer for 3 days and a bicycle f

or 2 days for a total of $180. What is the cost to rent a trailer for 1 day and a bicycle for 1 day?

1 answer:

Georgia [21]3 years ago

6 0

Well look I really don’t know have a good day hope you do good on remember god loves you and have ahold day

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Which best describes a transformation that preserves the size, shape, and angles of an object? A. congruent transformation B. no

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Your answer would be D: isometry

Step-by-step explanation:

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2 years ago

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What is the volume of a rectangular crystal with a length (1) of 2.2 cm, a width (w) of 2 cm, and a height

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3 years ago

You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard devia

gtnhenbr [62]

Answer:

$n=(\frac{2.58(58.2)}{1})^2 =22546.82 \approx 22547$

So the answer for this case would be n=22547 rounded up to the nearest integer

Step-by-step explanation:

Let's define some notation

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=58.2$ represent the population standard deviation

n represent the sample size

$ME =1$ represent the margin of error desire

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =+1 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance would be $\alpha=0.01$ and the critical value $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(58.2)}{1})^2 =22546.82 \approx 22547$

So the answer for this case would be n=22547 rounded up to the nearest integer

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3 years ago

Sandy spun a spinner with 5 equal parts labeled 1-5. What is the probability she will Not spin a 4

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The probability is likely but not impossible. there is a 4/5 chance she will not spend a four.

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3 years ago