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2 years ago

Luke puts $35 in his savings account every month. Use a calculator to find how much money he will save in a year.

Mathematics

2 answers:

Gre4nikov [31]2 years ago

6 0

$420

12 months in a year
$35 dollars a month
35 times 12 = 420

Hope this helps ;)

irina1246 [14]2 years ago

4 0

£35 X 12(months) = £420 per year he saves.

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a telephone technician charges $30 per hour plus a $45 service charge your father's firm hires him to hook up his company's phon

hodyreva [135]

y=mx+b

y=30h + 45

h= 6.5h

y=30(6.5)+45

y=$240

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To get from the post office to the library, Sindy walked due north and then due east. The distance Sindy walked east is 20 meter

kaheart [24]

A. x∧2+(x+20∧2=150∧2 is correct.

because you need to plug the numbers into the pathagoreum theorum which is
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6 0

3 years ago

Read 2 more answers

The delivery times for all food orders at a fast-food restaurant during the lunch hour are normally distributed with a mean of m

UkoKoshka [18]

Answer:

Let X the random variable that represent the delivery times of a population, and for this case we know the distribution for X is given by:

$X \sim N(14.7,3.7)$

Where $\mu=14.7$ and $\sigma=3.7$

Since the distribution of X is normal then we know that the distribution for the sample mean $\bar X$ is given by:

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

And we have;

$\mu_{\bar X}= 14.70$

$\sigma_{\bar X} =\frac{3.7}{\sqrt{40}}= 0.59$

Step-by-step explanation:

Assuming this question: The delivery times for all food orders at a fast-food restaurant during the lunch hour are normally distributed with a mean of 14.7 minutes and a standard deviation of 3.7 minutes. Let R be the mean delivery time for a random sample of 40 orders at this restaurant. Calculate the mean and standard deviation of $\bar X$ Round your answers to two decimal places.

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the delivery times of a population, and for this case we know the distribution for X is given by:

$X \sim N(14.7,3.7)$

Where $\mu=14.7$ and $\sigma=3.7$

Since the distribution of X is normal then we know that the distribution for the sample mean $\bar X$ is given by:

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

And we have;

$\mu_{\bar X}= 14.70$

$\sigma_{\bar X} =\frac{3.7}{\sqrt{40}}= 0.59$

4 0

3 years ago

The diameter of a round skating

Tema [17]

Answer: 47 meters

Step-by-step explanation:

The equation for the diameter of a circle is $C=d\pi$ , so we just multiply the diameter (15) by $\pi$ . $15\pi$ , or roughly 47.1238898038. Rounded to the nearest meter, 47 meters. Also, happy pi day!

7 0

2 years ago