Friday

October 9, 2015
Total # Posts: 540

**math -> exponents**

please help me, I forget how to do the problem -> 3^-5 + 3^-4 / 3^-5 - 3^-4 .... the answer is apparently -2.. please help
*October 30, 2008*

**analytic geometry**

the base of an isoceles triangle lies on the x-axis. The coordinates of the midpoints of the equal sides pf the triangle are (2,3) and (-2,3). What are the coordinates of the vertices of the triangles? Please help.
*October 19, 2008*

**chemistry**

First you find the moles of N2 assuming that you have 34.8 grams of N2. Then you find the moles of O2 assuming that you have 65.2 grams of O2.(100%-34.8%=65.2% so there is 65.2g O2). The partial pressure equals mole fraction x the total pressure(mole fraction= moles of O2/...
*October 13, 2008*

**math**

The equation of a circle with centre O(0,0) is x^2+y^2=40. The points A(-2,6) and B(-6,-2) are endpoints of chord AB. DE right bisects chord AB at F. a)Verify that the centre of the circle lies on the right bisector of chord AB. b)Find the distance from the centre of the ...
*October 9, 2008*

**ecology**

what are the reasons for low phosphorus levels in soil? Please explain to me, it seems as if every site that talks about this is saying something different and I really don't understand.
*September 26, 2008*

**math**

express 2,750,389 in scientific motion
*September 13, 2008*

**math**

a spherical ball requires approximately 900cm2 of material in order to make it. Find the volume of the ball : The volume is 2579.325cm3 NOW The ball is sold in a rectangular prism shaped box. What percentage of the volume of the box is taken up by the ball? Please help me =)
*September 4, 2008*

**Algebra**

Thanks
*July 5, 2008*

**Algebra**

1/z=2/z-1/11 the answer is z=11 is this correct.
*July 5, 2008*

**Algebra 1**

Thanks, This is my first time working on Algebra.
*July 5, 2008*

**Algebra**

Thank you for looking at my work.
*July 4, 2008*

**Algebra**

x^2-5x=-10 =x=5+i sqrt15/2 ,5-i sqrt15/2. CAN SOMEONE CHECK MY ANSWER.
*July 4, 2008*

**Algebra 1**

quadratic equation. ax^2+bx+c=0 Solution 1,only solution. Can you help me I am struggling to work this out.
*July 3, 2008*

**Algebra 1**

thanks
*July 3, 2008*

**Algebra 1**

If the sides of a square are lengthened by 8cm, the area becomes 289cm^2. Find the length of a side of the original square. I do not know how to do this please help me.
*July 3, 2008*

**Algebra**

Thanks Reiny this is my first time and the operations was not in brackets so I DID NOT KNOW
*July 3, 2008*

**Algebra**

x-8/x-9-x+1/x+9+x-17/x^2-81 =x^3-81x^2-7x-27/x^2. Can some check this my answer and see if it corre4ct please.
*July 3, 2008*

**Algebra**

thanks
*July 2, 2008*

**Algebra**

Can I get some help on this one I need to know if I got the right answer on this equation. Factor. v^2+12v+36 my answer was (v+6)^2 Can you check this for me.
*July 2, 2008*

**Algebra**

Factor. v^2+12v+36 my answer was (v+6)^2 Can you check this for me.
*July 2, 2008*

**Algebra**

Thanks Reiny
*July 2, 2008*

**Algebra**

Factor the trinomial. t^3-4t^2-32t = t(t+4)(t-8) can someone help me pleaseand check my answer.
*July 2, 2008*

**Algebra**

thanks
*July 2, 2008*

**Algebra**

SIMPLIFY BY REMOVING FACTORS OF 1. q^2-64/(q+8)^2 q^4+16q^3+64q^2-64/(q+8)^2 is this answer correct, can you help me .
*July 2, 2008*

**Algebra 1**

Thank you
*July 1, 2008*

**Algebra 1**

(x+19)(x-7)(x+17)>0=-19<x<-17 or x>7 Can someone please look at this equation and let me know if I did it correctly.
*July 1, 2008*

**Algebra 1**

(x+19)(x-7)(x+17)>0=-19<x<-17 or x>7 is this answer correct
*July 1, 2008*

**Algebra 1**

Is this right. r^2/r^16=1/r^14 Divide and simplify
*June 30, 2008*

**ALGEBRA**

Is this correct. t^3-4t^2-32t=t(t+4)(t-8) Factor the trinomial.
*June 30, 2008*

**Algebra 1**

thanks
*June 30, 2008*

**Algebra 1**

CAN YOU LOOK AT THIS ONE AND TELL ME IF IT IS CORRECT. Multiply.(-4t)^2(2t^2)^3=128t^8
*June 30, 2008*

**Algebra 1**

thanks for looking at my work.
*June 30, 2008*

**Algebra 1**

Can you check this one for me. Evalute the polynomial for x=1. 2x^2-2x+4 When x=-1, 2x^2-2x+4=8
*June 30, 2008*

**Algebra 1**

thanks
*June 30, 2008*

**Algebra 1**

Can you let me know if this answer is right. (2ã2-4ã3)(4ã3)+8ã3)=-80 Multiply
*June 30, 2008*

**Algebra 1**

Can you help get started on this equation. Solve for x. x^2+52=8x
*June 26, 2008*

**science**

WHY WOULD DROPLETS OF WATER FROM ON THE OUTSIDE OF A GLASS CUP?
*June 22, 2008*

**Algebra 1**

CAN YOU LET ME KNOW IF I DID THIS PROBLEM .SOLVE x²+8x+12=0
*June 18, 2008*

**Algebra 1**

Can you tell me if this answer is right. x^2+5x-14=(x-2)(x+7)
*June 17, 2008*

**statistics**

1. If we select a birth at randam, what is the probability the mother is 19 years of age or younger. 2. What is the probability she is 30 years of age or older. 3. What is the expected age of the mother at birth. 4. What is the variance of mother's ages
*June 16, 2008*

**Algebra 1**

can some one direct me to a graphing program for this kind os equations. Find the label and the vertex and the lineof symmetry. Graph the function. f(x)=5x^2
*June 15, 2008*

**Algebra 1**

Thanks Reiny I was on the right track I had miss one step I had half of the answer.
*June 14, 2008*

**Algebra 1**

Please help me check my answer. Solve by completing the square. x^2-4x=10
*June 14, 2008*

**Algebra 1**

x = [ - 3 } ã (9 + 20 ) ] / 2 x = [ - 3 } ã (29) ] / 2 x = [ - 3 } 5.385 ] / 2 x = 1.193, x = - 4.193 here is the real one that was just a example
*June 7, 2008*

**Algebra 1**

When approximating to three decimal places (I've just since realized you HAVE to have a calculator to do this) what buttons on the calculator are you pushing to get the answer?
*June 7, 2008*

**Algebra 1**

-4.193.. and 1.193 But how are you coming up with these numbers? This is the answer, I am clueless to how your finding it... what do I need to do to figure this problem out?
*June 7, 2008*

**Algebra 1**

Example: x^2+3x-5=0 Answer : -3- sqrt 29/2, -3+sqrt 29/2 (exact solutions) Can someone help me put this in three decimal forum
*June 7, 2008*

**ALGEBRA**

thanks
*May 31, 2008*

**ALGEBRA**

solve:p+4/p=-5 Please I need help
*May 31, 2008*

**Algebra 1**

thanks
*May 31, 2008*

**maths(am i right??)**

Ms James buys x calculators and y folders to sell, she must buy at least 5 calculators,the folders she buys must be at least twice the number of calculators and if each calculator cost $20 and foldr $5 and she cant spend more than $300, write inequalities to represnt all this ...
*May 19, 2008*

**ALGEBRA**

THANKS FOR THE HELP
*May 10, 2008*

**ALGEBRA**

can I please get some help with this problem. FACTOR . CHECK BY MULTIPLYING 4x²+12x
*May 10, 2008*

**ALGEBRA**

How do you determine if a polynomial is the differnce of two squares.
*May 7, 2008*

**math**

Each of the following pairs of terms is the middle term and last term of the product of a perfect square. Write the corresponding perfect square. a)-6x,9 b)4y,4 c)-8a,16 d)-12,36 ...I don't understand how to do these.
*April 17, 2008*

**english**

I'm having trouble finding quotes from Romeo and Juliet that relate to the themes of Hierarchy and Injustice/Prejudice.. please help :(
*April 13, 2008*

**math riddle ALGEBRA WITH PIZZAZZ**

what do you get when you cross a zebra with an ape man?
*April 6, 2008*

**Algebra**

solve x+21/x+3<2 x+21/x+3 - 2(x+3)/x+3 <0 x+21-2(x-3)/x+3<0 x+21-2x-6/x+3<0 answer 15-x/x-3<0(is this right?) For Further Reading Algebra - Anonymous, Thursday, April 3, 2008 at 5:07pm You are close. They want you to find the values of x so that the equation the...
*April 4, 2008*

**English**

I am supposed to write an opinion paragraph and I would like to know from an english teacher what I should change. My teacher seems pretty particular about what I write and always docks marks if I mess up on a tiny thing therefore I would really like some help Here is my ...
*April 3, 2008*

**Algebra**

Is this right? (15-x)/(x-3)<0 15-x<0 -x<-15 answer is x>15 x+3<0 answer is x<-3
*April 3, 2008*

**Algebra**

solve x+21/x+3<2 x+21/x+3 - 2(x+3)/x+3 <0 x+21-2(x-3)/x+3<0 x+21-2x-6/x+3<0 answer 15-x/x-3<0(is this right?)
*April 3, 2008*

**Algebra**

So..... from your answer I need to add a -10 to (x+1)^2+2x+-10?
*April 2, 2008*

**Algebra**

I am having trouble with this problem. I have done it several times and come up with two different answers. Can someone tell me what I am doing wrong? Write the quadratic function in the form a(x-h)^2+k y=x^2-2x-9 (x^2-2x)-9 (x^2+2x+1-1)-9 (x^2+2x+1) answers (x+1)^2 or x^2-2x-9=y
*April 2, 2008*

**math**

how would I solve for (2x-3/2)= (-x-1/4)
*March 31, 2008*

**math**

the distance between north bay and sudbury is about 125km. If they are 10 cm apart on a road map, what is the map scale?
*March 30, 2008*

**INTERNATIONAL BUSINESS**

thanks for your help
*March 15, 2008*

**INTERNATIONAL BUSINESS**

I NEED HELP WITH THIS QUESTION. EXPLAINING THE BASICS OF HOW LABOR FORCES INFLUENCE INTERNATIONAL BUSINESS.
*March 15, 2008*

**math**

the recipe for pasta salad will serve 6 people, and there are 32 people attending the party. I know that when i added all the ingredients i had i got 11.24, and so then i multiplied by 5 1/3 which is 16/3... but i'm not sure if that is right considering many people are ...
*March 6, 2008*

**english**

can you maybe give me a site or something that gives an example of a character sketch.. because i'm not too sure how to write one.
*March 2, 2008*

**math**

five. got it now thanks so much
*February 28, 2008*

**math**

5^3 = 125, but now what do i do?
*February 28, 2008*

**math**

how would you solve [(*square root*125)^4]^1/6
*February 28, 2008*

**math**

if u have 5(square root)3^2 what would be your answer/steps to finding it?
*February 27, 2008*

**english**

could you possibly give me a site where i could find the story: silent snow secret snow by conrad aiken?
*February 27, 2008*

**accounting**

How does budgeting affect the accrual basis accounting?
*February 26, 2008*

**math**

I don't understand how I am supposed to solve if i have something like (-7) to the power of -2... or 3/4 to the power of -1
*February 23, 2008*

**Music**

My question is what compositional techniques were used in the 20th century? I have looked everywhere including my book and cannot find compositional techniques defined. Can you give me the definition of compositional techniques and then maybe I can figure out what they are ...
*February 15, 2008*

**Chemistry**

Cis means on the same side and trans means on the opposite side. The atoms are on the same side as the double bond. Cis Isomeric compounds are different from trans isomeric compounds because trans isomers are more stable. Trans isomer are on the opposite sides of the double ...
*February 10, 2008*

**Chemistry**

Someone answered my questions.
*February 10, 2008*

**Chemistry**

Cis means on the same side and trans means on the opposite side. The atoms are on the same side as the double bond. Cis Isomeric compounds are different from trans isomeric compounds because trans isomers are more stable. Trans isomer are on the opposite sides of the double ...
*February 10, 2008*

**Chemistry**

Cis means on the same side and trans means on the opposite side. The atoms are on the same side as the double bond. Cis Isomeric compounds are different from trans isomeric compounds because trans isomers are more stable. Trans isomer are on the opposite sides of the double ...
*February 10, 2008*

**Chemistry**

Below is the question I am trying to answer. I think after much debate, I may have it. Does anyone know if I am close to being right? Does cis and trans isomeric compounds display different properties? Why? Cis means on the same side and trans means on the opposite side. Cis ...
*February 10, 2008*

**health**

can u find me a site with stating specific slang names for depressant drugs? cause i really can not find any :(
*February 10, 2008*

**Health**

what are the different ways stimulants can enter the body? & is it possbile for certain stimulants to be injected (like by a needle)into the body? & if so what kind of stimulants are injected?
*February 9, 2008*

**spelling**

what new words can you make out of the letters hummingbirdwaterproof
*February 7, 2008*

**vocabulary**

What word means fear of meeting new people? Thanks for helping
*February 7, 2008*

**Math**

could you maybe give me and euqation using the numbers 21, 2, 6, 19 & 13 that give a total of 3? Please :)
*February 6, 2008*

**religions of the world**

how modern civilization has impacted the spiritual lives of the indigenous people. are indigenous religions still practiced today
*January 30, 2008*

**chemistry**

the atomic number of oxygen is 8. How many protons, neutrons and electrons are in an oxygen icon with a charge of -2 and a mass number of 17?
*January 27, 2008*

**algebra**

kyle's credit bill is $360. kyle sends a check to the credit card company for $70, charges another $109 in merchandise, and then pays off another $231 of the bill. how much does kyle owe the company?
*January 23, 2008*

**English**

What is the theme of of Design by Robert Frost?
*December 16, 2007*

**health**

1. What organ is the master controller for directing "amino aciduse(it's not a muscle)? 2. What is meant by the term "amino acid pool" and amino acid turnover"
*November 14, 2007*

**Math**

How do i tranfer formulas?
*November 13, 2007*

**science**

I've got two questions which I do not understand... a)In the early 1920's, shortly after world war I, smoking became fashionable for men. Why did lung cancer rates not increase until the 1950's? &... b)Suggest a reason why no comparable increase in lung cancer in ...
*November 11, 2007*

**health**

What are some common items that use lactose as a filler or as a flavoring agent
*November 8, 2007*

**please help solve algebra problem**

subtract 4x/x-8-32/x-8
*October 19, 2007*

**history**

thanks
*October 2, 2007*

**history**

i need some finding a website for this assignment. I have to do a presentation on these points. Explain how the U.S became involved in the politics of Southeasr Asia. Explain how this involvement impacted the U.S political climate of the 1950s.
*October 2, 2007*

**algebra 2**

help multiply (x/3+3/4)(3x/4-3/5)
*September 29, 2007*

**algebra 2**

find the value of this polynomials for the given values of the variable. -x^2-5x-6, x=-3 and x=-2
*September 28, 2007*