Thursday

November 26, 2015
Total # Posts: 228

**Graphing**

My answer is suppose to be x= -1/2. Is that correct?
*April 3, 2008*

**Graphing**

I need to find the symmetry of a polynomial function graph. Is this correct? f(x)=x^2+2x-1 x=-6/2x=-2/2*1 x=-2/2=-1 It is symmetric about x=-1/-2
*April 3, 2008*

**Algebra**

I have worked it more..... t=3+or-sqrt9+136/4 t=3+or-sqrt145/4 (is this my answer?)
*March 21, 2008*

**Algebra**

HELP! an object moves in a straight line given by s=2x^2-3t where s is in meters and t is the time in seconds the object is in motion. how long to nearest tenth will it take to move 17 meters? my attempt s=2t^2-3t 17=2t^2-3t -17=-17 0=2t^2-3x-17 t=-b +or- sqrtb^2-4ac/2a t=-(-3...
*March 21, 2008*

**Algebra**

Can someone help me, I am stuck and do not know how to complete. Maybe my first part is wrong, I don't understand by looking at my example if I am doing it right or not. Square root Property 2k^2 +144=0 2k^2 +144-144=0-144 2k^2=-144 This is where I am confused 2k=sqrt -144...
*March 17, 2008*

**Algebra**

use only positive exponents and all variables are real positive numbers y^9/8 / y^5/8 =9/5 (is this right?)
*March 13, 2008*

**Science**

Can someone tell me if I have these three correct? Are the following observations, predictions or hypothesis. I think: Birds eat worms when bugs are not available. Observation Infection is caused by bacteria. Hypothesis Honey is the food store for a bee hive. Observation
*March 12, 2008*

**science**

Are the following observations, predictions or hypothesis. I think: Birds eat worms when bugs are not available. Observation Infection is caused by bacteria. Hypothesis Honey is the food store for a bee hive. Observation
*March 12, 2008*

**Chemistry**

Tell what the function of lipids do in a cell. Is the correct answer: lipids function in a cell is to provide energy, act as structural components in a cell , and can help provide hormones
*February 23, 2008*

**Biology**

Tell what the function of lipids do in a cell. Is the correct answer: lipids function in a cell is to provide energy, act as structural components in a cell , and can help provide hormones.
*February 23, 2008*

**Organic Chemistry**

Thank-you for taking the time to help me understand the question. I think I understand, would the following statement be correct: Alcohol would not be a base, because in order to be a base the molecule must accept a proton.
*February 16, 2008*

**Organic Chemistry**

Alcohol has OH functionality, but do you expect it to be a base and why? I would expect it to be a base, but I am not sure why. Does anyone know?
*February 16, 2008*

**Chemistry**

Do you mean like this? Hydorgenation is when atoms of hydrogen H2 are added to the carbons in a double or triple bond of alkenes or alkynes to form what we call alkanes. More or less attaches to one of the carbon atoms in a double and OH-attaches to the other carbon atom of ...
*February 10, 2008*

**Chemistry**

It is organic and it is in alkenes.
*February 10, 2008*

**Chemistry**

Difference between hydration and hydrogenation reactions? I have searched everywhere in my book and all I can come up with is: Hydorgenation is when atoms of hydrogen H2 are added to the carbons in a double or triple bond of alkenes or alkynes to form what we call alkanes. ...
*February 10, 2008*

**Chemistry**

Is there someone out there that can tell me if I answered this right or if I need to study some more? Thanks What is it that makes water such a good solvent for polar substances? Why is it called the universal solvent? Water is such a good solvent for polar substances because ...
*January 31, 2008*

**Math**

We have to simplify complex numbers and I was wondering whether I did these problems correctly. 1. 4i^2-2i^3 = -4+2i 2. (-i)^3 = i 3. (the square root of a -2)^6= -8 4.1/(2i)^3 = i/8
*December 16, 2007*

**science**

what is the relative humidity of a kilogram of air at 25 degrees celcious that contains 10grams of water vapor
*October 2, 2007*

**Chemistry**

srry I placed the question in the wrong spot. The equation is 2NH3 <=> N2 + 3H2 1 mole of NH3 injected intoa 1L flask 0.3 moles of H2 was found the concentration of N2 at equlibrium is 0.1M how do I find the concentration of NH3 at equlibrium? (N2) = 0.1 (H2) = 0.3 ...
*May 8, 2007*

**early childhood**

Can someone please help me with this? I think I have the right answer--just need verification. Which statement most accurately describes "normal" growth and development of the pre-school child? 1.It occurs at a uniform rate for all chidren. 2.It is a simple process. ...
*April 11, 2007*

**Early Childhood Ed. Question--Please Help!**

To capitalize on children's different learning styles, teachers should: 1.teach lessons using a multi-sensory approach. 2.use their own learning style to teach and let the children match them. 3.separate children by learning styles and seat children near others like ...
*April 7, 2007*

**Early Childhood Ed..**

Would creating a sensory-rich classroom enviroment be an appropriate way for a teacher to help young children learn about aesthetics? I think that would be an exciting idea, and that children would enjoy it.
*April 7, 2007*

**Math**

A physician prescribes 3.5 mg. of medication each day. How many micrograms is this dosage? Thanx for the help! 1mg is 1000mcg. I am told that mcg is a "modern" abbreviation for microgram. So, I say 3.5 x 1000= 3500 mcg Right? thank you! correct What´s the ...
*February 28, 2007*

**Math**

A perscription calls for 5 ounces of medication. For how many millimeters is te perscription? (Use 1 ounce = 29.57 mL.) if 1oz = 29.57mL then you simply multiply: 29.57 x 5 Good job! Nice you are helping!
*February 27, 2007*

**Math--I need help!**

I have these two questions on my assignment. Please help me. 80 mi. = _______ km. 9 cm. = _______ m. 9cm (1m/100cm)=??? 80miles (1 km/1600m) one mile = 1.6093 km so 80 times 1.6093 = what? one cm = 1/100 m or .01 m so 9 cm = 9 times .01 = what? 9 cm = 0.09 m. 80mi.= 128.72km. ...
*February 27, 2007*

**Kim spent $20.00 on grocries. She had $50.00. how much did Kim spend?**

Kim spen $50.00 subtracted by $20.00 witch is $30.00 left!
*February 27, 2007*

**help!!**

what is the antomym for prohibit http://www.thesaurus.com =)
*January 16, 2007*

**Calculus**

Does x^4 * e^x have a horizontal asymptote? Take the derivative to see if slope is zero. dU/dx = x^4 * e^x = 4x^3 * e^x + x^4 * e^x So, what happens as x approaches neg large ?
*October 27, 2006*