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1 year ago

What is a unit rate for meter per second if a car travels 274 m in 17 seconds

Mathematics

1 answer:

sergeinik [125]1 year ago

3 0

The rate is 274m/17s = 16.1176m/s

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

coldgirl [10]

Answer:

z = -0.4.

Step-by-step explanation:

Here's the formula for finding the z-score (a.k.a. standardized normal variable) of one measurement $x$ of a normal random variable $X \sim N(\mu,\; \sigma^{2})$ :

$\displaystyle z = \frac{x-\mu}{\sigma}$ ,

where

$z$ is the z-score of this measurement,
$x$ is the value of this measurement,
$\mu$ is the mean of the random normal variable, and
$\sigma$ is the standard deviation (the square root of variance) of the random normal variable.

Let the length of a trout in this lake be $X$ inches.

$X \sim N(30, \; 4.5^{2})$ .

$\mu = 30$ , and
$\sigma = 4.5$ .

For this measurement, $x = 28.2$ . Apply the formula to get the z-score:

$\displaystyle z = \frac{x - \mu}{\sigma} = \frac{28.2 - 30}{4.5} = -0.4$ .

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2 years ago

The perimeter of a rectangle is 24 inches. If the length of the rectangle is less than the width of the rectangle, which of the

shepuryov [24]

Step-by-step

D 0<\<12

7 0

2 years ago

the bookstore normally sells mechanical pencils for ¢6.50 .this week the pencils are discounted by 25‰ to the nearest cent, what

dezoksy [38]

The discount takes off 1.63

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3 years ago

What is the next number in this series: 1 2 8 48 364

evablogger [386]

Did you mean to put 384? because if you did then the next number would be 3840. It would because 1*2=2. 2*4=8. 8*6=48. 48*8=384. 384*10=3840. Hope this helped.

3 0

3 years ago

A car salesman sells cars with prices ranging from $5,000 to $45,000. The histogram shows the distribution of the numbers of car

nalin [4]

Answer:

'The distribution will exhibit a negative skew'

Step-by-step explanation:

The given parameters of the price of car sales are;

The price range of the cars = $5,000 to $45,000

The data on the histogram includes;

$\begin{array}{ccc}Car \, Prices&&Cars \, Sold\\5,000 - 10,000 &&200\\10,000-15,000&&350\\15,000-20,000&&550\\20,000-30,000&&700\\30,000-35,000&&550\\35,000-40,000&&350\\40,000-45,000&&200\end{array}$

Given that the number of cars sold in 10 years that are less than, $5,000 is projected at 200, we have;

$\begin{array}{ccc}Car \, Prices&&Cars \, Sold\\0-5,000&&200\\5,000 - 10,000 &&200\\10,000-15,000&&350\\15,000-20,000&&550\\20,000-30,000&&700\\30,000-35,000&&550\\35,000-40,000&&350\\40,000-45,000&&200\end{array}$

Therefore, the number of bars of the histogram before the maximum height on the left will be more than the number of bars of histogram after the maximum height on the right and the histogram will be left-skewed, which is a negative skewness.

3 0

3 years ago