Rachelle

Hi! I have a few questions about Factoring Quadratic Expressions. My first one is 12x^2+x=6. How would you facor that? My second is how would x^4-1 equal the answer 1(x^4-1)(x^2=1)(x^2-1)? Finally, how would you factor something such as -3x(x+2)-8(x+2), w...

16 years ago

Thanks for those who answered my previous question! I have just one more: x^2-625=0, what is the GCF? How is it deterimined? It does not appear to me that there is one. How would it then be factored and have the zero-product powers applied? Then, what abo...

16 years ago

I am expected to use the quadratic equation for the following: x2 + 3x – 4 = (x + 4)(x – 1) = 0. Once this is plugged into the value of x (the long equation, which I am unable to copy from the internet, but it goes -3 plus or minus the square root of...)...

16 years ago

I used an online math site, to explain quadratic equations. But the thing is, they said that (-4)^2 is 16, but my calculator said -16. Why is that? And also, how does the square root of 40 break down into the square root of 4 and the square root of ten? D...

16 years ago

What do you do when you have a quadratic equation such as x^2=2x-5, and there is no c value? Should you leave c as zero? one? Or just omit c entirely?

16 years ago

Hi! Does anyone know a simple way to program the quadratic formula into a TI-83 (Texas Instruments?) I googled it, but most of the results required downloading (I don't have a connecting cable), or a bunch of keys that I couldn't find on my computer. Let...

16 years ago

A 24.0 g sample of ice at -19.0°C is mixed with 118.0 g of water at 85.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J/g°C, respectively, and the e...

16 years ago

hi, i think this prob has to do what you did the last time but how does pressure play appart in this chapter?? What pressure would have to be applied to steam at 325°C to condense the steam to liquid water (ÄH vap = 40.7 kJ/mol)?

16 years ago

Calculate the energy that must be removed to convert substance X from a gas at 116°C to a solid -44.6°C. Assume X has a molar mass of 75.0 g/mol. ÄHvap 20. kJ/mol C(s) 3.0 J/g·°C ÄHfus 5.0 kJ/mol C(l) 2.5 J/g·°C bp 75°C C(g) 1.0 J/g·°C mp -15°C please hel...

16 years ago

What pressure would have to be applied to steam at 325°C to condense the steam to liquid water (ÄH vap = 40.7 kJ/mol)? Responses Dr bob please! Chemistry - GK, Friday, November 28, 2008 at 11:47pm Use the Clausius-Clapeyron Equation to calculate the vapor...

16 years ago

I need to find the value of x. 9x^3 + 9x = 30x^2 It's confusing because apparently I have to do 9x^3 + 9x and then add the + 30x^2 to it, and then make it equal 0, so it ends up like this: 9x^3 + 9x + 30x^2 = 0 And afterward, I would factor it. How do you...

16 years ago

The sum of Eric and Bob's weights is 9 times greater than the difference of their weights. The positive difference of their weights is also 240 pounds less than the sum. If Eric weighs less than Bob, find Bob's weight. I am not sure at all how to solve th...

16 years ago

5 green balls and 2 red balls together weigh 10 pounds, and 1 green ball and 4 red balls together weigh 7 pounds. If all red balls weigh the same amount and all green balls weigh the same, then what is the weight of 8 red and 8 green balls together? I'm n...

16 years ago

At a certain time, Janice notices that her digital watch reads (a) minutes after two o'clock. Fifteen minutes later, it reads (b) minutes after three o'clock. She is amused to note that (a) is six times greater than (b). What time was it when she looked a...

16 years ago

1 1 1 - . - . - 5 5 2 help me answer this fraction problem

15 years ago

If the radius of curvature of the bump is r = 29 m, find the apparent weight of a 60 kg person in your car as you pass over the top of the bump at 12 m/s.

15 years ago

Snoopy is in his plane, 4500 ft above ground. he fires a projectile straight up. The Vo of the projectile is 340 ft/s. (after the projectile is fired, it has no acceleration, so its height can be modeled by a "falling body" model). The Red baron is mainta...

13 years ago

For each of the following research questions, indicate the following: (1) the type of research that would best answer the question, 2) an appropriate sampling method, and 30 the best method of collecting the data. a) How do the minority groups at a certai...

11 years ago

Liam is the founder and president of the Justin Bieber Fan Club. As a fundraiser, the JBFC sells chocolate-flavored spaghetti sauce. The current price is $6.40 per jar and their average monthly sales are 250 jars. They are considering raising prices and h...

11 years ago

If 2.00 mL of 0.600 M NaOH are added to 1.000 L of 0.850 M CaCl2, what is the value of the reaction quotient and will precipitation occur? I've been trying this problem over and over and haven't been able to get it. I know precipitation will not occur fro...

10 years ago

Harry drove 4 hours on the freeway, then decreased his speed by 20 mph and drove for 2 more hours on a country road. if his total trip was 362 miles, then what was his speed on the freeway? I really have no idea how to do this.

10 years ago

Kelby has some money. She bought a birthday gift for $11 and spent one-half of the remaining money on clothes. She spent 4/5 on gas and used 1/5 of what was left for entertainment. She saved the $28 she had left. How much money did she have to start with?

9 years ago

The base jeepney fare is PHP 8.00 for the first four kilometers and an additional PHP 1.50 per kilometers for the succeeding kilometers, express the fare for x kilometers as a function of x. please help me and kindly put the solution too. thank you :)

9 years ago

the poem have 14 lines, 3 quantrains and a couplet but the meter and rhythm in every line is different. what kind of poetry style is that? please answer me. im really confused. thank you. :)

9 years ago

Tanya has a collection of 52 rocks that she wants to put into the display cases. Each display case can hold 8 rocks. Tanya devides to find how many cases she needs 52devided by 8 =64 How many display cases will tanya need?

4 years ago

3. Glenn has 4 pants and 3 shirts. How many different pairs of a pants and shirts can he wear? 4. A mall has five gates. How many can one enter and exit the mall?

4 years ago

If you read the book you will understand that gap insurance is only the needed added protection, so how would you recommend them to gap that 50K?

17 years ago

Thank you so much whoever posted all of this info. I am doing an assignment that is due tomorrow for UOP and I could not find anything online to really answer this question clearly for me.

16 years ago

What would be be then?

16 years ago

I meant what would "b" be then? Whoops

16 years ago

wow, thank you. when do you use the equation -qhot=qcold? I don't really understand fully q3 and q4 for q3 why do u have to use 24g ice but u use the Cp of water and not ice. and for q4 and we used another water equation... why do we have to do this twice...

16 years ago

i solved for lnx=4,852,725 whats next? and i relaly cant put it into the calc. it says (overflow)

16 years ago

Hey Melanii (nooni)! :-) It's me! Anyway, I figured this one out. Well, drwls actually did tell you what you were looking for... their weights. Tweedledee will weigh 121 pounds and Tweedledum will weigh 120 pounds. Here are the two equations as our teache...

16 years ago

Mel, I told you already-- 120 and 121. How much they weigh together would be one number-- 141, I guess. I actually don't know how you would figure that part out, but the second part is correct.

16 years ago

Oh, okay. Do you understand now?

16 years ago

All you have to do is try out some numbers. An easy way is to place 0 in for x and y to find some easy x and y-intercept points. Just plug in 0 for x. 4 times 0 is obviously 0, so 0 minus what equals 7? 7. Do the same for y. Hope I helped! :-)

16 years ago

Okay... I think the thing we need to do is find another equation then try the elimination method. But what would be another equation? Hmm... :-) Would it (possibly) be a - 15 = b, because 15 mins later, it was (b) minutes after three o'clock?

16 years ago

Sorry... I tried my best to explain it. Did you look back at my other explanation to the first time you asked it? That might help. It's basically the way our teacher showed us.

16 years ago

Wow... 1/2 of a ball. :-) I see what you were trying to get across... but our teacher never showed us a problem like this... so frustrating. I don't know if your ratio way is exactly right, but it is a good way to straighten out the info. Wait... I got so...

16 years ago

Yep! They are all solutions! Good job! :-)

16 years ago

Yes, Chopsticks, after trying the way I described in my last response, I got the same answers you have. Thank you for your help! :-)

16 years ago

Yes, both ways are the same. The way the other person told you is in what is called y-intercept form, and the form that you have it in right now (4x - y = 7, I think it was) is called standard form. Basically, just by adding and subtracting things to move...

16 years ago

nope I'll repost it

16 years ago

I got a "f" after reading what you had and questioning myself! Thank you!

15 years ago

do your own work!!!

15 years ago

This is a PSY230 question for a large grade. I think doing your own homework is better. If you need help with the definitions then go to your online book page 17-19 and this will help on how to do this work.

15 years ago

I haven't learned how to find a function. Do you mind walking me through it?

11 years ago

Ksp for Ca(OH)2 is 5.02 x 10^-8. The way to predict whether a precipitation will occur is to calculate Qsp and compare to Ksp. Qsp = (Ca2+)(OH-)^2. Concentration of OH- will be given by (M1V1/V2) = 0.0012 Qsp = 0.850 * (.0012)^2 = 1.22*10^-6 My homework s...

10 years ago

multiply 1/6 by 6, you should get 1.

9 years ago

1.b 2.c 3.a 4.c 5.b 6.b 7.b 8.b 9.b 10.d 11.c 12.d 13.b 14.c 15.b

7 years ago

its the same thing that Jack said just in letter form

7 years ago

I nedd answer please

4 years ago