How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask The Professor Your Own Question
The Professor
The Professor, Taught at USC Years Ago
Category: Homework
Satisfied Customers: 1387
Experience:  Engineering Degree, Tutoring Experience, USC Faculty (Retired)
Type Your Homework Question Here...
The Professor is online now
A new question is answered every 9 seconds

Need help with an algebra question for my son.

Customer Question

Need help with an algebra question for my son. :Nails are given names such as 2 penney,3 penny and so on.What is the name of a nail that is 2 1/2 inches long.(equation-: nail lenth=1+1/4(x-2).....x-penny nail.      I know the answer is eight but I cannot explain to my son how to get the steps right.
Submitted: 9 years ago.
Category: Homework
Expert:  The Professor replied 9 years ago.
Here is a table of the "penny" sizes for nails, with a little speculation about how the name came to be.

But HERE is some text that explains how to compute the actual "penny" size - disregard the video and just consult the text:

Take the length of the nail, subtract half an inch, and multiply by four.

If you consult the table in the first link above, you will see that this formula works.

Let D be the "penny" size, and L be the actual length of the nail in inches. Then:

D = ( L - .5 ) * 4

Final answer.
The Professor and 3 other Homework Specialists are ready to help you
Customer: replied 9 years ago.
I was looking more of a reply to solve the equation but this reply will be sufficient. Thank you
Expert:  The Professor replied 9 years ago.

You need to spend $3 to view this post. Add Funds to your account and buy credits.