1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jolli1 [7]
3 years ago
9

A square has side length (7x-2) in. What is the area of the square?

Mathematics
1 answer:
Elza [17]3 years ago
4 0
Because the square has similar lengths, the equation would be
(7x-2)(7x-2)
We can use FOIL to solve this:
The area is 49x^2 - 28x + 4 in^2.
You might be interested in
a trail is 5 miles long. carlos walks 2/3 of the trail and runs the rest. how many miles does carlos walk?
lana [24]

Answer:

as 1 mile = 1.609 km

so 5miles = 8.045 km

so 2/3 of the trail = 2/3 × 8.045 = 5.3633333 (ans)

Hope it helps

8 0
3 years ago
For every 5 hours he works Andrew gets paid $60.20. How much is Andrew paid per hour
Varvara68 [4.7K]
Andrew gets paid $12.05 cents per hour
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
A man was 24 years old when his son was born . Now he is three times as old as his son . So how old is his son
leonid [27]
The son is 8. I’m not sure if I’m right hope this helps
3 0
2 years ago
Read 2 more answers
A desk drawer is shaped like a rectangular prism. The height of the drawer is 7 inches. The bottom of the drawer has an area of
Gnom [1K]

Answer:

Volume = 1470\ in^3

Step-by-step explanation:

Given

Height = 7in

Base\ Area = 210in^2

Required

Determine the volume

The volume of the drawer is calculated as:

Volume = Base\ Area * Height

Substitute values for Base Area and Height

Volume = 210\ in^2 * 7in

Volume = 1470\ in^3

3 0
3 years ago
Other questions:
  • Mortimer earns $595 a week, and he works 5 days a week. What is his daily wage?
    5·2 answers
  • To make this equation true we need parentheses
    9·1 answer
  • Write three Powers that have values greater than 120 and less then 130
    13·1 answer
  • x+6=x What is X. And what are the steps u use to solve it and will you explain what u did for me. Thanks hopefully someone does
    5·2 answers
  • The salaries of the employees at four companies are summarized below. Answer the questions about them.
    9·1 answer
  • What direction will this object accelerate? Please give me an explanation as well I will be marking brainiest (NO LINKS)
    6·2 answers
  • Please help!!<br> Will mark brainliest
    6·1 answer
  • I need help <br><br><br><br><br><br><br> What number is 75% of 140????
    11·1 answer
  • Select all correct answers
    13·1 answer
  • Last one i swear its for a great cause
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!