## Search found 12 matches

Mon Mar 24, 2014 12:31 pm
Forum: Forum Rules & Guides
Topic: Pasting an image in a Post
Replies: 5
Views: 5622

### Pasting an image in a Post

Does anyone know how to paste an image into a post? I scanned a diagram into a jpeg and wanted to copy and paste it into a post but can't figure out how to do it. Can anyone help?
Sun Mar 23, 2014 10:23 pm
Forum: Intermediate Algebra
Topic: Arch Problem
Replies: 2
Views: 1565

### Arch Problem

Need help with this one ... You are designing an archway for the entrance to a college campus. The line y=0 is the base of the 4 foot square prism pillars. The pillars are 10 feet tall and the walkway between the pillars is 20 feet apart. The arch that sits atop was created using two semi-ellipses m...
Tue Dec 17, 2013 8:10 pm
Forum: Intermediate Algebra
Topic: Simplifying a messy expression
Replies: 4
Views: 3466

### Re: Simplifying a messy expression

Yep, That's what I eventually got and like you it seemed to easy but I guess they are not always hard. Thanks for spotting the wrong sign in the problem on the last term. That's how the sign was shown on the handout so I am going to assume it was a typo. I wrote it all out by hand and it should be "...
Tue Dec 17, 2013 4:10 pm
Forum: Intermediate Algebra
Topic: Simplifying a messy expression
Replies: 4
Views: 3466

### Re: Simplifying a messy expression

That's correct. I don't have access to the radical symbols so sorry for the messiness. I got as far as figuring out the pattern. The problem as stated has a negative sign for the last term but I think you are correct that it s/b +. The assigment sheets have ben known to be a bit sloppy when it comes...
Mon Dec 16, 2013 9:31 pm
Forum: Intermediate Algebra
Topic: Simplifying a messy expression
Replies: 4
Views: 3466

### Simplifying a messy expression

Need to combine and simplify the following expression

1/(7-4*SQRT(3)) - 1/(4*SQRT(3)-SQRT(47)) + 1/(SQRT(47) - SQRT(46)) - 1/(SQRT(46)-3*SQRT(5)) +

1/(3*SQRT(5)-2*SQRT(11)) ......... - 1/(SQRT(5) - 2)
Mon Dec 16, 2013 4:08 pm
Forum: Geometry
Topic: Isosceles Triangle
Replies: 1
Views: 8110

### Isosceles Triangle

Need help with ...

Find all coordinate points A such that triangle ZAP in an isosceles triangle with base ZP where Z is the point (4/7,-9/4) and P is the point (7/2,1/11). No decimal answers which makes the soln(s) incredibly messy. I think there are two solns for A but not sure.
Mon Dec 16, 2013 2:44 pm
Forum: Intermediate Algebra
Topic: 9th degree polynomial inequality
Replies: 1
Views: 2264

### 9th degree polynomial inequality

Need to solve the inequality below using only algebra ... -14x^9 + 25x^8 + 414x^7 - 596x^6 - 3434x^5 +2469x^4 + 9414x^3 + 2862x^2 - 1620x <= 0 I can factor out an x to get one root x=0. I graphed it using Quickgraph to get where it crosses the x axis and can see the intervals where it alternates bet...
Thu Nov 14, 2013 2:36 am
Forum: Discrete Math
Topic: Difference two squares: pos. integer solns of x^2-y^2=120
Replies: 3
Views: 1740

### Re: Difference two squares: pos. integer solns of x^2-y^2=12

Thanks we got 3 out of the four. What are the sons.
Thu Nov 14, 2013 1:26 am
Forum: Discrete Math
Topic: Difference two squares: pos. integer solns of x^2-y^2=120
Replies: 3
Views: 1740

### Difference two squares: pos. integer solns of x^2-y^2=120

Looking for a way to find all positive integers of x^2-y^2=120. Found some by trial and error but don't know how to find them all.
Thu Sep 26, 2013 11:39 pm
Forum: Intermediate Algebra
Topic: Sum of digits of the number (192)^4 times (5)^21?
Replies: 1
Views: 1477

### Sum of digits of the number (192)^4 times (5)^21?

My son and I are stumped. Without using a calculator what is the sum of the digits of the number (192)^4 times (5)^21?