# Posts by Isobelle

Total # Posts: 19

**math**

150

*March 17, 2015*

**Physics**

white liht is produced by blue light and what other liht? I think it's yellow, but I'm not even sure behind my reasoning. I could really just use some help on this; I've been trying to find a good website to explain the whole color theory, but so far what I've ...

*November 30, 2008*

**Physics**

Is warm water heating a person swimming in it, convection or conduction; what about warm water heating the air above it?

*October 19, 2008*

**Physics**

Is warm water heating a person swimming in it, convection or conduction; what about warm water heating the air above it?

*October 19, 2008*

**Physics**

Is warm water heating a person swimming in it, convection or conduction; what about warm water heating the air above it?

*October 19, 2008*

**Math**

How do I solve 2x^2-5x=0 by factoring, I tried taking the two out, but that doesn't seem to be working.

*October 16, 2008*

**Math - urgent**

oh okay, yeah, that's the answer I got, but I'm just still really confused as to how they even got sqrt3. Thank you, though.

*October 16, 2008*

**Math - urgent**

When solving for x by completing the square as in the equation 3(x-1)^2-1=0 should I add one to both sides then divide by three or add one to both sides then square root both sides? It makes sense to me to first divide by three, but if I do this, I'm not getting the ...

*October 16, 2008*

**Math**

In school we're learning to use the quadratic formula. I understand how to use it and what its applications are, but I don't understand why sometime it's okay to simplify and sometimes it's not. For example, I got the result (-2 ± 2 square root of 6)/2. ...

*October 15, 2008*

**Math**

In school we're learning to use the quadratic formula. I understand how to use it and what its applications are, but I don't understand why sometime it's okay to simplify and sometimes it's not. For example, I got the result (-2 ± 2 square root of 6)/2. ...

*October 15, 2008*

**Physics**

oh, okay.

*October 14, 2008*

**Physics**

why isn't it a good idea to spread salt on the road in really cold climates?

*October 14, 2008*

**Math**

thanks! :D

*October 14, 2008*

**Math**

no, I don't think I do. I tried completing the square and I'm just getting really weird numbers. :(

*October 14, 2008*

**Math**

Two positive integers are in ratio 1:3. If their sum is added to their product, the result is 224. Find the integers. On my own, I came up with the formula 224 = x + 3 x + 3x^2 but it's not really working out. Could someone please help me?

*October 14, 2008*

**Please help me.**

I really don't understand this, I don't mean to be a pain, but I really need to understand this.

*September 17, 2008*

**Maths**

I have a test tomorrow and I really don't get this, please help me. "Use transformations and the zeros of the quadratic function f(x)=(x-6)(x+4) to determine the zeros of each of the following functions a) y=2f(x) b) y=f(2x) c) y=f(0.5x)" I am so lost, I don'...

*September 17, 2008*

**Maths**

Please, I still need help with this. I need to make tables of values for both horizontal and vertical stretching, but I wasn't in class and missed the lesson. I don't really understand how to get the values; at first I figured you'd get the value of y by just ...

*September 14, 2008*

**Maths**

I need to make tables of values for both horizontal and vertical stretching, but I wasn't in class and missed the lesson. I don't really understand how to get the values; at first I figured you'd get the value of y by just pluging in whatever value of x you're ...

*September 14, 2008*

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