*interior*points on the frame? When you answer, please show your work so far. Thank you!

- Fri Oct 02, 2015 8:06 pm
- Forum: Trigonometry
- Topic: Help for calculating a point inside a pitched draw
- Replies:
**3** - Views:
**31**

It looks like coordinates have been given for the top (and bottom) corner points. Do you mean the *interior* points on the frame? When you answer, please show your work so far. Thank you!

- Thu Oct 01, 2015 8:42 pm
- Forum: Statistics
- Topic: How to interpolate this.
- Replies:
**3** - Views:
**51**

I have Y vectors = (0, 5, 10, 15, 20) At Condition1, x Vectors = (-0.0056, 5.0000, 10.0057, 15.0057, 20.0000) At Condition2, x vectors = (-0.0028, 5.0028, 10.0085, 15.0085, 20.0028) At Condition3, x vectors = ( 0.0000, 5.0056, 10.0113, 15.0113, 20.0056) There can happen many conditions between cond...

- Thu Oct 01, 2015 8:39 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Hard Tetrahedron Proof
- Replies:
**1** - Views:
**95**

Show that the centroid of the four vertices of a tetrahedron (a solid with four vertices joined by six lines that bound the tetrahedron’s four triangular faces) is the intersection of the following seven lines: a) It is 3/4 of the way from the vertex of the tetrahedron along the line segment joinin...

- Thu Oct 01, 2015 8:33 pm
- Forum: Trigonometry
- Topic: Find vector given X and Y components
- Replies:
**1** - Views:
**24**

I know the components of a vector on a Cartesian plane. How can I get the direction and magnitude of the vector? In simple terms please! You can use the formulas they gave you in class. You can see an explanation here . If you get stuck, please write back showing what you've tried and where it stop...

- Sat Sep 19, 2015 4:01 pm
- Forum: Pre-Algebra
- Topic: team played 160 games an won 65 percent of them.
- Replies:
**1** - Views:
**93**

swhite78 wrote:Soccer team played 160 games an won 65 percent of them. How many games did it win?

do the regular thing like they show here: http://www.purplemath.com/modules/percntof.htm

65% of 160 is x

0.65*160 = x

solve it

- Sun Sep 13, 2015 8:18 pm
- Forum: Intermediate Algebra
- Topic: Lineair Programming
- Replies:
**1** - Views:
**72**

Even with Excel Solver I could't manage to complete this. If you got as far as having the Solver try to finish this, then you did most of the work already. Please write back showing this. Thanks! A company accepts calls 7 days a week during the period 9 A.M. to 5 P.M. Based on analysis of historica...

- Sun Sep 13, 2015 7:54 pm
- Forum: Intermediate Algebra
- Topic: Surds and Indices Questions
- Replies:
**1** - Views:
**92**

I have to simplify them... \left(\, \dfrac{ x^{\frac{7}{4}}\, -\, x^{\frac{3}{4}}\, +\, x\, \cdot\, x^{\frac{7}{4}} }{x^{\frac{1}{4}}}\, \right)^2 Where are you getting stuck? If you're needing to learn how to work with fractional powers, try here . They show how to simplify with exponents ...

- Sat Aug 29, 2015 7:54 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: root in denominator - how to get this result?
- Replies:
**4** - Views:
**216**

I'm trying to figure out how to get from point A to point B here. What are the steps in between? Thanks in advance! Liz Point A: \dfrac{1}{\sqrt{a^2\, +\, b^2}}\, -\, \dfrac{1}{\sqrt{a^2}} Point B: 1\, -\, \dfrac{1}{\sqrt{1\, +\, \dfrac{b^2}{a^2}} I edited inside the quote to show what I think you ...

- Thu Aug 20, 2015 12:49 am
- Forum: Discrete Math
- Topic: How many combinations
- Replies:
**3** - Views:
**247**

But the point of "random" is that any pattern is only something you THINK you're seeing. Yes, you can cherry-pick subsets out of all the data, but the only "pattern" is something you have decided on. It isn't something that can be predicted.

- Wed Aug 12, 2015 2:33 pm
- Forum: Beginning Algebra
- Topic: Rearranging Formulae
- Replies:
**5** - Views:
**306**

wertert wrote:R=(u+v^2)/(u+v), make u the subject of the formula.

wertert wrote:so any chance you could run through a solution for this problem ? Still not 100% happy with the result.

What did you get? What were your steps? Please start with the 1st step of cross-multiplying:

R = (u + v

R(u + v) = u + v

Ru + Rv = u + v