Thursday

October 8, 2015
Total # Posts: 95

**MATH**

so it would look like this -3x - 9 -2x - 8 What happens to the addition sign? Can you show me how?
*September 4, 2015*

**MATH**

Reiny (Previous problem) better form would be to place the equal sign in front of each new line You also have errors -3(x + 3)- 2(x + 4) = -3x - 9 - 2x - 8 = -3x - 2x - 9 - 8 = -5x - 17 So -3 x 3 made -9. how did the 2 become negative, I thought it was a subtraction sign?
*September 4, 2015*

**MATH**

so -3 x 3 made -9. how did the 2 become negative, I thought it was a subtraction sign?
*September 3, 2015*

**MATH**

-3(x + 3)- 2(x + 4)= -3x + 9 - 2x + 8= -3x - 2x + 9 + 8= answer x + 17 is this correct
*September 3, 2015*

**Geometry**

The volume of a sphere is 3,000ð m3. What is the surface area of the sphere to the nearest square meter?
*October 2, 2014*

**chemistry**

In the reaction ZnO+2HCl=ZnCl2+H2O what is oxidized and what is reduced?
*April 1, 2014*

**Algebra**

A gardener combines x fluid ounces of a 20% liquid fertilizer and 80% water mix with y fluid ounces of a 5% liquid fertilizer and 95% water mix to make 30 fluid ounces of a 10% liquid fertilizer and 90% water mix. a. Write a system of linear equations that represents the ...
*January 16, 2013*

**Algebra**

A baseball player's batting average is the number of hits the player has divided by the number of at-bats. At the beginning of a game, a player has a batting average of .360. During the game, the player gets 3 hits during 5 at-bats, and his batting average changes to .375...
*January 16, 2013*

**Physics**

A person who is properly constrained by an over-the-shoulder seat belt has a good chance of surviving a car collision if the deceleration does not exceed about 30 "'s". Assuming uniform deceleration of this value, calculate the distance over which the front end ...
*September 24, 2012*

**Physics**

A stone is dropped from the roof of a high building. A second stone is dropped 1.51 later. How far apart are the stones when the second one has reached a speed of 12.6 ?
*September 24, 2012*

**Math Help Please! **

My investment in Edgewater stocks is losing half its value every 2 years. Find and interpret the associated decay rate. If I use the formula y=100(1/2)^x (<-- Is that correct?) I got the answer of 0% (its wrong), I used a different formula, which should be wrong and got the...
*February 29, 2012*

**Math**

I got the wrong answer of 12 years
*February 29, 2012*

**Math**

How should I approach this, what formula do I use to solve and how do I solve it? How long, to the nearest year, will it take me to become a millionaire if I invest $3000 at 9% interest compounded continuously? Thanks
*February 29, 2012*

**Math**

Assume it costs Microsoft $4,300 to manufacture 7 Xbox 360s and $8,290 to manufacture 14. Obtain the corresponding linear cost function. C(x)= (what formula do I use to get the cost function, because I can't get it) What was the cost to manufacture each additional Xbox? (...
*February 19, 2012*

**Math**

Find a linear equation whose graph is the straight line with the given property. Through (5, 9) with slope 2 I can't find the correct answer. I don't know where I did wrong Thanks.
*February 15, 2012*

**Math**

Worldwide quarterly sales of a brand of cell phones was approximately q = −p + 176 million phones when the wholesale price was $p. (a) If the cellphone company was prepared to supply q = 9p − 344 million phones per quarter at a wholesale price of $p, what would be ...
*February 11, 2012*

**Math**

I got 26, but it was wrong
*February 11, 2012*

**english 9**

in the poem "the journey" by mary oliver,what is the "you" do in this poem?
*February 1, 2012*

**Pre-Calculus**

How do you solve this quadratic function? f(x) = −x2 + 10x
*October 4, 2011*

**physics**

A car starting from rest and moving with variable acceleration possess average velocities 5m/sec, 10m/sec, 15m/sec in the first seconf and third seconds. What is the total distance covered by the car in these three seconds?
*July 10, 2011*

**english**

I need a thesis statement of 450 words for why renting a house is a better option than buying a homr
*May 29, 2011*

**help**

how do legalism and daoism differ/
*May 20, 2011*

**health**

what do you teach for 5th grade Health class?
*May 14, 2011*

**carmel middle school**

34-2y=8 what is the value and look at the equation in the box
*April 18, 2011*

**Calculus**

Thank you so much this definitely helps me double check my work!!
*April 18, 2011*

**Calculus**

I need to find the second derivative of y=x(x-1)^1/2. I found the first derivative is 2x-1/2(x-1)^1/2, if someone could check, but I am miserably stuck on the second derivative.
*April 18, 2011*

**chemistry**

We performed an experiment on UV-Vis Spectrometry, by testing the absorbance of KMnO4 and KCr2O7 solutions at different concentrations. We prepared the dichromate solutions with dilute sulfuric acid. Why didn't we use water, what is the purpose of sulfuric acid?
*April 17, 2011*

**Analytical Chemistry**

Hi. We performed an experiment on UV-Vis Spectrometry, by testing the absorbance of KMnO4 and KCr2O7 solutions at different concentrations. We prepared the dichromate solutions with dilute sulfuric acid. Why didn't we use water, what is the purpose of sulfuric acid?
*April 15, 2011*

**math**

p=2.(w+l) p=40 l=2+w 40=2(w+(2=w)divide by 2 20=2w=2 subtract by 2 18=2w divide by 2 l=2+w substitude w for 9 l=11 answer =11
*April 4, 2011*

**vocabulary**

select the best synonym of the word satiate. a)empty b)fill c)deny d)deprive............please help.
*April 4, 2011*

**vocabulary**

the latin base CORD- means: a)hand b)eye c)heart d)head thank you so much for helping.
*April 4, 2011*

**vocabulary**

which word is not an example of blending? a)housewife b)brunch c)telethon d)electrocute
*April 4, 2011*

**calculus**

Write an equation of the line tangent to y=(9-x^2)^2/3 at x=1
*March 12, 2011*

**Maths**

how to do shell to bells
*January 10, 2011*

**geometry**

In rectangle ABCD line EF joins the midpoint of line AB and BC. Line BE equals 5, line BF equals 12, find line EF, line AC and perimeter of the rectangle.
*December 15, 2010*

**Physics**

Two trucks, 300 km apart, are on a head-on collision course with one another. The first truck is moving at 100 m/s and the other is moving at 50 m/s in the opposite direction. A confused (but swift) fly starts from the front bumper of the faster truck and flies at 200 m/s ...
*September 26, 2010*

**Math - function problems**

1) A box with a square base has a total surface area of 12m^2. Express the volume of the box as a function of the base edge. 2) A 10 foot tall lamppost causes a child 4 feet tall to cast a shadow of x feet on the ground. If the distance along the ground from the child to the ...
*September 13, 2010*

**Math - asymptotes**

yes, those are what i meant..sorry about the notation
*September 13, 2010*

**science**

The "I WONDER...." PROJECT FROM SCHOOL.I AM TO COMPLETE THE QUESTION AND THEN RESEARCH THE FINDINGS ON A DISPLAY BOARD AND PRESENT IT TO THE CLASS.MY QUESTION IS CAN PAPER BE MADE FROM SOMETHING OTHER THEN TREES?I NEED SOME SOURCES OTHER THEN THE WEB.ANT SUGGESTIONS ...
*May 24, 2010*

**4th grade**

marlena buys seven oranges and five bananas. what is the total cost? show your work.
*April 19, 2010*

**algebra**

Look it up!
*April 1, 2010*

**Algebra**

looks like L up-side down.
*April 1, 2010*

**Math(Please check)**

Yes
*April 1, 2010*

**Finance**

If sales grew 20% from 10,000,000 to 12,000,000 and the discresinary financing needs is 500,000. What percent of sales grown would be needed to equal a DFN of zero.
*March 31, 2010*

**math 116**

find an equivalent equation with the given denominator 7/b= ?/b squared the expression that is equivalent to 7/b is ? if b is squared wouldn't the 7 also have to be squared to be equivalent? 7/b = 49/b squared? Am I correct? Thanks
*November 20, 2009*

**math**

$1,815.35
*November 20, 2009*

**algebra**

find an equivalent equation with teh given denominator 7/b= ?/bsquared the expression that is equivilent to 7/b is ? if b is squared wouldn't the 7 also have to be squared to be equivilant? 7/b = 49/b squared? Am I correct? Thanks
*November 20, 2009*

**math**

I'm sorry, I will leave the answer to a regular tutor. I was only trying to help
*November 20, 2009*

**math**

1/3 = .3333 for -6x to be greater than .3333 then -6 multiplied by x needs to equal more than .3333 since two negatives make a positive x would have to be a negative digit. A variety of numbers work
*November 20, 2009*

**environmental science**

sewage can harbor disease and must be properly disposed of to eliminate problems. Human activities have contributed to the problem because the more humans the more sewage created
*November 20, 2009*

**algebra**

thank you I see my error I multiplied 4 *20 and instead of writing 80 I wrote 60, which threw off teh rest of the equation. Thanks
*November 20, 2009*

**algebra**

add the following - 4/7 + [ -7/20] 7*20= 140 so -60/140 + - 49/140= 11/140?
*November 20, 2009*

**algebra**

thank you
*November 20, 2009*

**algebra**

3/0 =? the answer is 0 but my options are to solve the equation if possible or say the answer is undefined. Is 0 undefined? I have no clue what an undefined answer is
*November 20, 2009*

**Writing**

You need to know your topic before you can begin writing, You also need to know what type of language to use. Should it be formal, informal, academic? You use your audience to determine the language and tone you need. Organization helps keep your writing clear
*November 20, 2009*

**algebra**

thank you
*November 20, 2009*

**algebra**

5x -3 = 11 + 12x combine like figures add 3 to both sides to remove the 3 5x= 14+ 12x Now I get confused. If I remove the 12x I have to subtract 12x from 5x which gives me an answer of -7x=14 would the correct answer thus be x= -2? thanks
*November 20, 2009*

**math**

30/5x3-2 --------- 2-2/3 on the top part-do I divide 30 by 13, or divide 30 by 5 then multiply by 3 and subtract 2?
*November 4, 2009*

**science**

wearing down rock by the grounding of other rocks or sand is called?
*September 29, 2009*

**science**

wearing down rock by the grounding of other rocks or sand is called
*September 29, 2009*

**drwls-year8 geography**

thanks for finding that link its helped me with my homework
*January 27, 2009*

**Year 8 geography**

i need to label a picture of a river. the mouth and other parts. does anyone know any good websites that can help me a labelled diagram would be helpful thanks for your help!
*January 27, 2009*

**home economics**

yap regular sewing.... according to my teacher there are 100 different kinds of sewing.
*September 21, 2008*

**home economics**

Please help me... what are the different kinds of stitch? and can u pls show me the sample picture for eah stitch?
*September 21, 2008*

**alg**

im soo sry...but that was it..thanxs soo much :)
*July 19, 2008*

**alg**

yeah n+5 should be over n-3 and n+3 should be over n-5 and your subtracting this frm eachother to equal 16 the possible answers are -4 -2 2 4 6
*July 19, 2008*

**alg**

if n+5-n+3 over n-3-n-5=16 what is the value of n this is an SAT question and i just cant seem to figure it out..even with pluggin in the numbers it never = 16...so help pls..what is the quickest way in solving this for the SAt's
*July 19, 2008*

**chem**

okay so i have the answers but i just wanted to see if i was correct Balance these equations..i need the correct answers 1.H2+CL2->HCL 2.Ag+2n->Zn2+Ag 3.Mn4+Cu+->Mn2+ +Cu2+
*June 10, 2008*

**SAT**

im taking the Sat's tomorow..what are some great tips??
*June 6, 2008*

**alg 2**

find the foci of the ellipse (x+5)^2/4+(y-1)^2/16=1
*June 6, 2008*

**alg 2**

what is the foci of the ellipse (x+5)^2/4+(y-1)^2/16=1
*June 6, 2008*

**alg. 2**

what is the foci of the ellipse X2 over 81 + Y2 over 49=1
*June 6, 2008*

**chem**

THANNXX YOU SHOULD HONESTLY BE MY TUTOR LOL
*June 4, 2008*

**chem**

a gas volume has of v1=450ml. if the temp is held constant, what volume would gas occupy if the pressure p2=2p1? omg i cant figure anything out!!!!!!!!
*June 4, 2008*

**chem**

use boyles law to solve for the missing value in the following P1=0.75atm,V2=435ml,P2=0.48atm, V1=?
*June 3, 2008*

**simple chem**

would the answer be in kpa??
*June 3, 2008*

**simple chem**

a balloon with a volume of 1.375 L is released from earths surface at sea level. what will the balloon occuy at an altitude of 20.0km, where the pressure is 10 kpa? pleasee help!! show work please
*June 3, 2008*

**simple chem**

what are the highly reactive elements the ones that react with electricity, noble gasses and the less reactive elements
*May 31, 2008*

**spanish translation**

please dont use any web translaters..most dont say th right things how would you say: my name is amethyst. i was born in ghana and came to america when i was 2 years old. i am short with dark skin and dark hair. I used to live in fontana but now i live in corona. I hope to ...
*May 31, 2008*

**chem**

convert a pressure 1.75atm to kpa convert the pressure of 1.75atm to mm Hg convert a pressure of 570 torr to atmospheres
*May 31, 2008*

**spanish**

how would you say I love all types of food, like chinese, hamburgers, italian and african.
*May 31, 2008*

**chem**

how do you convert grams to moles
*May 29, 2008*

**simple chem**

how to convert tempetarues.. i forgot . do yo add 273C to get to kelvins or do you subtract...vise versa..??
*May 29, 2008*

**chem**

thanxs sooo much i understand now, all i need is practice
*May 29, 2008*

**chem**

how do you solve for the combined gas law?..i ..I am very confused ..someone help by making it easier and clear since i am kinda slow.. ex.a sample of neon gas has a volume of 752ml at 25.0C. what will the volume at 50.0C be if pressure is constant
*May 29, 2008*

**Physics**

how is does that work? isnt there some formula to figure out the mass gain?
*April 21, 2008*

**Physics**

A cup of coffee with a mass of 300g is brewed using 9.5 x 10^4 J of energy. What is the mass gain of the cup of coffee from this heating?
*April 21, 2008*

**Precalc HW (NO IDEA HOW TO SOLVE)**

Low Earth orbiting satellites orbit between 200 and 500 miles above Earth. In order to keep the satellites at a constant distance from Earth, they must maintain a speed of 17,000 miles per hour. Assume Earth's radius is 3960 miles. a. Find the angular velocity needed to ...
*November 19, 2007*

**Mathematics**

Low Earth orbiting satellites orbit between 200 and 500 miles above Earth. In order to keep the satellites at a constant distance from Earth, they must maintain a speed of 17,000 miles per hour. Assume Earth's radius is 3960 miles. a. Find the angular velocity needed to ...
*November 19, 2007*

**chem**

For a double replacement reaction to occur, is it that one of the products must be insoluble and form a solid? There has to be some mechanism to remove the products from the reaction so that the reaction does not proceed in the reverse direction. Product needs to be removed: ...
*March 19, 2007*

**chem**

In the equation: 2Al+6HCl-->2AlCl3+3H2 Why is the hydrogen by itself instead of the chlorine? Al is above hydrogen in the activity series (sometimes called the electromotive force series); therefore, it replaces H. This is single replacement type reaction. Isn't Al ...
*March 18, 2007*

**Geography**

Number 8 is Lithosphere!
*January 2, 2007*

**Geography**

Ive got the same one!! Its solid! Never mind! Thank yoou Soooooooooooooooooooo much!!
*January 2, 2007*

**Geography**

Ive got the same one!! Its solid! whats the answer to 3?!!
*January 2, 2007*

**physical science**

A 200.0 kg astronaut and equipment move with a velocity of 2.00 m/s toward an orbiting spacecraft. How long will the astronaut need to fire a 100.0 N rocket backpack to stop the motion relative to the spacecraft? 100*timefiring= mass*changevelocity
*August 30, 2006*

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