Saturday

April 19, 2014

April 19, 2014

Number of results: 192,954

**Algebra II-Please check my solution**

You're right. I'm sorry. When I saw the missed step, I stopped looking at the rest of the work. You are correct.
*Wednesday, February 16, 2011 at 11:14am by Kate*

**Algebra-please check**

Could someone please check my solution-Thank you-DRWLS helped me set it up and I solved it, I think From the top of a mountain 150 feet high, Jessie stands at the safety rail on the edge and looks below. The angle of elevation from his bike on the ground to Jessie is 38 ...
*Friday, January 7, 2011 at 4:04pm by Joseph*

**Algebra II**

6 is correct. If you check your answers, you will find that .5 (1/2) is not a solution. You must always check your answers in the original problem.
*Tuesday, February 8, 2011 at 7:12pm by helper*

**Algebra II**

(x-2)^3/4 = 8 What is the solution of the equation? Can anyone please show me how to do this..
*Monday, December 16, 2013 at 4:57pm by Cassie*

**Algebra II-Please check my calculation**

Thank you
*Monday, March 28, 2011 at 3:08pm by Sheila*

**Algebra II-Please check calc**

1) yes 2) yes
*Wednesday, April 6, 2011 at 11:13am by bobpursley*

**Algebra II-Please check**

Thank you for checking
*Sunday, December 11, 2011 at 10:37pm by Jackson*

**Algebra II-please check**

that is correct
*Monday, January 16, 2012 at 4:12pm by Steve*

**Math- Algebra II**

Please check if I did this right... √(2x+1)+7= 3 -7 -7 √(2x+1)= -4 Square everything √(2x+1)^2= -4^2 2x+1=16 -1 -1 2x=15 divide by 2 on both sides x=7.5 CHECK: (Plug it in) √(2(7.5)+1)+7= 3 √(16)+7= 3 4+7=3 11 doesn't equal 3 so the answer is no ...
*Wednesday, February 16, 2011 at 8:34pm by Lala*

**Algebra II Please check-**

Your answer is correct.
*Friday, May 13, 2011 at 7:50am by Mgraph*

**Algebra II-Please check**

looks good to me.
*Friday, January 13, 2012 at 3:19pm by Steve*

**Algebra II-Please check**

looks good, always a good idea to check your answer with the original on your calculator.
*Sunday, December 11, 2011 at 10:37pm by Reiny*

**Algebra**

√(y+4)-4=1 Y = or no solution I keep coming back to no solution but am wondering if I am confusing myself Please check Thank you
*Sunday, June 19, 2011 at 6:08pm by Sam*

**Algebra II**

It would really help me if someone could check these. Please?
*Sunday, April 20, 2008 at 5:28pm by Destiny*

**Math 116 algebra please check**

Solve using the multiplication principle. 10x= -90 The solution is x = -9 please check
*Wednesday, July 16, 2008 at 7:32pm by jay jay*

**Algebra II-Please check my solution**

Solve by elimination method-thanks fro checking my work 2x + 3y= 2 multiply this equation by 2= 4x + 6y = 4 4x-2y = -28 4x + 6y = 4 -4x -2y = -28 8y = 32 y = 4 2x + 3(4) = 2 2x + 12 = 2 2x + 2-12 2x = -10 x = -5 solution = (-5,4)
*Wednesday, February 16, 2011 at 11:14am by Joella*

**Math 116 algebra please check**

Solve for the indicated letter. e=9f, for f The solution is f = 1/9e Please check this
*Wednesday, July 16, 2008 at 7:27pm by jay jay*

**Algebra II-Please check my calculation**

I agree with all your answers.
*Monday, March 28, 2011 at 3:08pm by Reiny*

**Algebra II-Please check fpr explanation**

okay-thank you I got it now
*Saturday, January 14, 2012 at 5:34pm by Graham*

**chemistry**

A student determines the cobalt(II) content of a solution by first precipitating it as cobalt(II) hydroxide, and then decomposing the hydroxide to cobalt(II) oxide by heating. How many grams of cobalt(II) oxide should the student obtain if her solution contains 46.0 mL of 0....
*Monday, March 3, 2014 at 4:30pm by jen*

**Algebra II Please check-**

Jodi,my answer was exactly identical to yours.
*Friday, May 13, 2011 at 7:50am by Henry*

**algebra II**

x^2 - 2 x = y + 3 x^2 - 2 x + 1 = y+4 (x-1)^2 = y+4 x = 1 is symmetry axis vertex at (1,-4) Please check your posts for typos
*Sunday, July 3, 2011 at 3:01pm by Damon*

**Chemistry **

a class reacts 50.00ml samples of 0.200 mol/L potassium phosphate solution with an excess of 0.120 mol/L lead(II) nitrate solution. Which reagent is intended to be the limiting reagent, what is he minimum volume of lead II nitrate solution required. How do you convert the ...
*Sunday, April 1, 2012 at 12:16am by tryme00*

**Algebra II-Please recheck your correction-Please check my solution**

I think I see where you mistook what I wrote-I'm doing the elimination method and subtracting the equations so the new equations were 4x + 6y = 4 after I multiplied first equation by 2 minus 4x -2y = -28 and so the 4x becomes -, the -2y becomes positive and the -28 becomes ...
*Wednesday, February 16, 2011 at 11:14am by Joella*

**Algebra II**

so 6x²+x+4=0 has no one solution(no one real solution but there are cumplex solution : it's (-1+-isqrt95)/12
*Saturday, March 1, 2008 at 8:03pm by mk-tintin*

**Chemistry**

If 32.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.545 g precipitate, what is the molarity of lead(II) ion in the original solution?
*Thursday, September 15, 2011 at 4:23am by Hel P.*

**Algebra II-Please check**

Both correct! Order is important for the first one, and not on the second.
*Tuesday, April 5, 2011 at 4:46pm by MathMate*

**Algebra II Please check-**

I forgot to put that I think b= 2 c=6, so therefore a^2-2^2 = 6^2 so a= 40, that' how I got to my equation
*Friday, May 13, 2011 at 7:50am by Jodi*

**Algebra II-Please recheck-Please check my solution**

when I wrote the -4x -2y = 28 I forgot to put the next step which was -4x + 2y = 28 but isn't the rest of my steps the same still because when I subtracted those they became 8y = 32 and the rest Thanks for responding-I'm not sure if this isn't right still-I think the answer is...
*Wednesday, February 16, 2011 at 11:14am by Joella*

**Math**

Help-I just started Algebra II and I'm lost. What is the solution of 10 = absolute value of 7-3x. Please show steps so I can understand
*Tuesday, September 7, 2010 at 3:46pm by Joel*

**chemistry(Please Check)**

You dissolve 6.55 g of potassium nitrate in enough water to make a 250. mL solution. What is the molarity of this solution ?Answer: 0.0262 Please Check my answer
*Monday, April 23, 2012 at 2:26pm by Wurola*

**Math 116 algebra please check**

Solve by elimination method 2x + 3y =1 4x + 6y =2 What is the solution of the system N there is no solution
*Wednesday, July 16, 2008 at 8:31pm by jay jay*

**Calculus, check my answers, please? :)**

Okay, so I think these are right, but I would appreciate if someone could check them and tell me if something is wrong and what the right answer is. I'd also appreciate an explanation if possible. :)Thank you! 7. Given that f(x)={x^3 if x ≥ 0 {x if x < 0 which of the ...
*Wednesday, October 2, 2013 at 11:15pm by Samantha*

**Algebra II-Please check my solution**

you're on the right track but when you tried to subtract the 2 eq you only subtracted the first term, but left the others' signs the same. It should look like this: 4x+6y=4 -4x+2y=28 now add the two eq together and redo the work you did before. if you have more questions just ...
*Wednesday, February 16, 2011 at 11:14am by Kate*

**Algebra II-Please check**

Please help-What is the equation of the ellipse with foci (0,6), (0,-6) and co-vertices (2,0),(-2,0) Please explain the steps because I have 5 to do for homework-Thank you-I'm really stuck on this I thought the answer would be x^2/4 + y^2/40 = 1 but that can't be because the ...
*Friday, May 13, 2011 at 1:25am by Jodi*

**Algebra II Please check-**

Please help-What is the equation of the ellipse with foci (0,6), (0,-6) and co-vertices (2,0),(-2,0) Please explain the steps because I have 5 to do for homework-Thank you-I'm really stuck on this I thought the answer would be x^2/4 + y^2/40 = 1 but that can't be because the ...
*Friday, May 13, 2011 at 7:50am by Jodi*

**algebra**

-3|6n-2| +5 = 8 case I: absolute value is positive. thus, -3(6n-2) + 5 = 8 -3(6n-2) = 8 - 5 -3(6n-2) = 3 6n - 2 = -1 6n = 1 n = 1/6 case II: absolute value is negative. thus, -3[-(6n-2)] + 5 = 8 3(6n-2) + 5 = 8 3(6n-2) = 3 6n - 2 = 1 6n = 3 n = 1/2 NOTE: these are not yet the ...
*Saturday, January 28, 2012 at 10:10pm by Jai*

**Chemistry**

What mass of chromium II chlroide (CrCl2) is dissolved in 150.0mL of solution to prepare .250M solution? Please Help
*Monday, May 28, 2012 at 7:32pm by Jack*

**Algebra II**

Could you please check my answer? Given the functions f and g, perform the indicated operations. 3. f(x)=4x - 9 g(x)7x-3 I got -3x-12
*Friday, September 14, 2007 at 9:41pm by Jules*

**chem!**

A 2.80 mol/L solution of iron (II) dichromate is combined with 5.00L of a 2.25 mol/L acidic solution of tin (II) bromide. Calculate the volume of iron (II) dichromate required. FeCr2O7 + SnBr2 --> SnCr2O7 + FeBr2 Is this the right formula? or no?
*Wednesday, May 16, 2007 at 5:34pm by Mistra*

**Algebra II**

If you want solutions, you have to write an equation, not just a polynomial. I assume you want the solution(s) to x^3 -9x^2 +27x -27 = 0 Since that can be written (x-3)^3 = 0, the only solution is x = 3.
*Sunday, January 9, 2011 at 10:01pm by drwls*

**chemistry**

Using the activity series, write a balanced chemical equation for the following reactions: 1. iron metal is added to a solution of copper (II) nitrate 2. zinc metal is added to a solution of magnesium sulfate 3. hydrobromic acid is added to tin metal 4. hydrogen gas is bubbled...
*Sunday, March 27, 2011 at 5:53pm by Jessica*

**Algebra II**

Could you please check my answer? Given the functions f and g, perform the indicated operations. 3. f(x)=4x - 9 g(x)7x-3 Find f-g I got -3x-12
*Saturday, September 15, 2007 at 12:01am by Jessica*

**Algebra II-Please check fpr explanation**

I forgot one question-in a hyperbola, the "a^2" is always under the first variable, whether it be "x" or "y", correct
*Saturday, January 14, 2012 at 5:34pm by Graham*

**Math 116 algebra please check**

Solve the following systems of equations x + 6y = (1) x+ 9 - 6y (2) What is the solution of the system? I get N for no solution
*Wednesday, July 16, 2008 at 7:29pm by jay jay*

**Chemistry**

50.00 mL samples of 0.200 mol/L potassium phosphate with an excess of 0.120 mol/L lead II nitrate solution. what is the minimum volume of lead II nitrate solution required? What volume of lead II nitrate solution should the instructor tell the students to use? Describe how the...
*Wednesday, April 11, 2012 at 10:35pm by Michelle*

**Chem question Redox Stoichiometry**

A 2.80 mol/L solution of iron (II) dichromate is combined with 5.00L of a 2.25 mol/L acidic solution of tin (II) bromide. Calculate the volume of iron (II) dichromate required. FeCr2O7 + SnBr2 --> SnCr2O7 + FeBr2 Is this the right formula? or no?
*Wednesday, May 16, 2007 at 4:41pm by Mistra*

**Algebra II-it can't be correct- Please check-**

It can't be correct my equation because that isn't a choice I was given-that's what I don't understand-thanks for trying to help though
*Friday, May 13, 2011 at 7:50am by Jodi*

**Algebra II (check)**

I had 3 at the very end where you have a -1 check your arithmetic.
*Saturday, March 1, 2008 at 9:56am by Reiny*

**Algebra II-Reiny-Please check fpr explanation**

So if I change the formula to = (-1), then I have to change the a^2 to be under the "x" is that correct? Thank you for your help
*Saturday, January 14, 2012 at 5:34pm by Graham*

**Algebra II**

Please do not confuse me by posting the same problkem again and again Algebra II - Damon, Monday, July 4, 2011 at 3:51pm x , f(x) -5 , -1/3 -4 , -1/2 -3 , -1 -2.5 , - 2 -2 undefined denominator of zero -1.5 , +2 -1 , +1 0 , +1/2 1 , +1/3
*Monday, July 4, 2011 at 3:50pm by Damon*

**ap chemistry**

for the following, mix the equal volumes of one solution from group I with one solution from group II to achieve the indicated pH. calculate the pH of each solution. Group I: .2M NH4Cl, .2M HCl, .2M C6H5NH3Cl, .2M (C2H5)3NHCl Group II: .2M KOI, .2M NaCN, .2M KOCl, .2M NaNO2 a...
*Thursday, February 9, 2012 at 12:17am by hannah*

**Algebra-please check**

What is the solution for absolute value of -1 + x = 5 I think the two solutions are x = 6 and x = (-4)
*Wednesday, October 6, 2010 at 6:56pm by Tanya*

**Chemistry**

Cadmium and a solution of cadmium(II) nitrate are used with tin and a solution of tin(II) nitrate to construct a galvanic cell. 1) The reaction run initially at standard state with 100-mL samples of each solution is allowed to proceed until 8.0 g of tin has been deposited on ...
*Sunday, April 29, 2012 at 4:42am by chamy*

**Algebra**

The first check is OK, so 0 is admitted as a solution. The second check is not OK because at two places, you have inverted the numerator and denominator, namely: 0/-1 = 0 should read -1/0 = ∞ and 0/2 = 0 should read 2/0 = ∞ Since the proposed solution x=1 gives ...
*Tuesday, August 4, 2009 at 8:58am by MathMate*

**Chemistry (titrations)**

15.00 mL of 0.01200 M EDTA were used to titrate 50 mL aliquot solution containing iron (II). How much iron (II) is present in the solution? The answer in the book is 201 ppm. I tried getting the moles of EDTA (n,EDTA = 1.8 x 10^-4 mol). I think they're in 1:1 ratio, or I guess...
*Saturday, March 15, 2014 at 10:59pm by Nina*

**chem??????????????????**

YEs, it is the correct balanced equation bobpursley A 2.80 mol/L solution of iron (II) dichromate is combined with 5.00L of a 2.25 mol/L acidic solution of tin (II) bromide. Calculate the volume of iron (II) dichromate required. FeCr2O7 + SnBr2 --> SnCr2O7 + FeBr2 Is this ...
*Wednesday, May 16, 2007 at 6:32pm by bobpursley*

**Algebra II (check) not the whole problem**

yes, I know I assumed from your setup that the divisor was x-1 My previous reply stands. check by finding f(1), you will get 3, not -1
*Saturday, March 1, 2008 at 9:56am by Reiny*

**Chemistry help!!!**

The class will react 50.00 mL samples of .200 mol/L potassium phosphate with an excess of 0.120 mol/L lead II nitrate solution. what is the minimum volume of lead II nitrate solution required? What volume of lead II nitrate solution should the instructor tell the students to ...
*Wednesday, April 11, 2012 at 9:22am by Anon*

**chemistry**

Suppose of copper (II) nitrate is dissolved in of a aqueous solution of sodium chromate. Calculate the final molarity of nitrate anion in the solution. You can assume the volume of the solution doesn't change when the copper (II) nitrate is dissolved in it. Round your answer ...
*Tuesday, February 19, 2013 at 4:56pm by madison*

**Chemistry**

Please help!:( What mass of copper would be produced by the reduction of copper(II) ions during pas- sage of 1 ampere of current through a solution of copper(II) sulfate for 89 minutes?
*Sunday, April 21, 2013 at 12:20pm by Steven Gomez *

**Algrebra II-please check my answer**

Determine the zeros of the function 7x^2 + 9x = 0 answers were: {-9/7} {-9/7,0} {o,9/7} {9/7} I think the answer is {-9/7,0} but I'm not positive when I worked it-If this is wrong please steer me into the correct calcs because then I don't what I'm doing wrong 2.Solution to ...
*Friday, January 14, 2011 at 12:21pm by Sammy*

**chemistry**

Please help ~~ Because i don't ever know the reaction in organic compound .. Do anyone has the data bank of the organic chemicals ? I cannot find out what are the compound in the reaction with it ~~ 1. What do butylamine give when it is dissolved in water ? A nearly pH10 ...
*Thursday, December 4, 2008 at 10:28am by initial D*

**Chemistry**

25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go about solving this? I ...
*Monday, October 22, 2012 at 8:50pm by Sam*

**Chemistry**

25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go about solving this? I ...
*Monday, October 22, 2012 at 8:52pm by Sam*

**Chemistry**

25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go about solving this? I ...
*Monday, October 22, 2012 at 8:52pm by Sam*

**algebra**

can someone check my answer please? Solve for indicated letter. b=8c ,for c the solution is c=b/8 ? is this correct?
*Saturday, September 26, 2009 at 3:54pm by Anonymous*

**algebra**

can someone please check my answer to this problem? solve for indicated letter. n=m+d, for m the solution is m= (n+d)/m is this correct?
*Saturday, September 26, 2009 at 3:55pm by Anonymous*

**Algebra**

Could someone please help me with this problem? Solve using the multiplication principle. Don't forget to check. -z=35. The solution is z=
*Monday, February 22, 2010 at 9:28am by B.B.*

**general chem**

Using the activity series (Table 4.5), write balanced chemical equations for the following reactions. If no reaction occurs, simply write NR. (a) Nickel metal is added to a solution of copper (II) nitrate; (b) a solution of zinc nitrate is added to a solution of magnesium ...
*Sunday, October 9, 2011 at 10:47am by rob*

**AP CHEMISTRY**

Please could you help me predict the products of the following reactions: ( I cant figure them out) THANX in advance! 1) CaO powder is added to distilled water. 2) Acetic acid solution is added to solid sodium hydrogen carbonate. 3) Potassium permanganate solution is added to ...
*Sunday, May 27, 2012 at 1:35pm by DAN*

**Algebra II**

One answer, x = 6. .5 or 1/2 is an extraneous solution (not a valid solution). If you are asked specifically if there are any extraneous solutions, then you would list it as such. I've never had a problem ask for extraneous solutions, since it's not a solution to the problem.
*Tuesday, February 8, 2011 at 7:12pm by helper*

**Algebra II-Please check my conclusion**

I solved this and I came up with two nonreal solutions, correct so the answer to my problem above would be then be "0" soltions correct?
*Saturday, January 8, 2011 at 5:33pm by Matt C*

**chemistry**

pure zinc metal into a solution of copper(II) sulfate, the zinc will slowly dissolve to produce zinc sulfate solution, and the copper(II) ion of the copper(II) sulfate will be converted to metallic copper. Write the unbalanced equation for this process. (Include states-of-...
*Saturday, October 2, 2010 at 9:54am by astoeck*

**Algebra II**

No, y = -1 is an extraneous solution. y = 1, is the answer.
*Tuesday, February 8, 2011 at 7:12pm by helper*

**Math- Algebra II**

correct, no solution
*Wednesday, February 16, 2011 at 8:34pm by helper*

**Math 116 algebra please check**

Solve the following system of equations x + 6y =4(1) x = 9-6y (2) What is the solution of the system N There is no solution
*Wednesday, July 16, 2008 at 8:34pm by jay jay*

**science**

Please check my work 3M solution of NaOH (1 liter worth) molecular weight: 39.99 3 x 39.99= 119.97 grams dilute to 1000mL 3 M solution of HCl (1 L) c1v1=c2v2 (12M)(?)= (3M)(1000mL) ?= 250 mL please check thank you
*Monday, October 13, 2008 at 2:12pm by ag*

**Chem II**

Find the mass of sodium formate that must be dissolved in 200.00cm^3 of a 1.0M solution of formic acid to prepare a buffer solution with pH=3.40? I have no clue how to work this out. Please help me.
*Monday, November 19, 2012 at 2:14pm by Bianca*

**Calculus - Limits. Check my answer, please! :)**

Suppose that h(x)={x^2-x+5 if x<2 {5 if x=2 {x^3-1 if x>2 Which of the following is equal to 7? I. lim h(x) x->2- II. lim h(x) x->2+ III. lim h(x) x->2 I only II only ***III only I and II only I, II, and III
*Sunday, October 6, 2013 at 11:44am by Samantha*

**Algebra II**

Your solution is perfect, did you just want confirmation?
*Friday, February 29, 2008 at 6:53pm by Dan*

**algebra**

I answered your post below with this same question. Please check to see if your post was answered before re-posting. I pasted the answer here for you. x = liters of 3% solution 3 - x = liters of 10% solution .03x = value 3% solution .10(3 - x) = value 10% solution 3 = liters ...
*Sunday, January 23, 2011 at 11:23pm by helper*

**Chemistry**

Acidic solutions of KMnO4 are reduced to Mn(II). Neutral or basic solution of KMnO4 are reduced to MnO2. Mn(II) solution are faint pink, MnO2 is a brown solid. In solution this often is mixed with MnO(OH)2, also dark brown.
*Sunday, February 14, 2010 at 6:00pm by DrBob222*

**Algebra 2**

Absolute Value Equations Will someone please check to see if I am doing this correct? 1.|7x+2|=10 x= (8/7) or (-12/7) 2.|3x-5|=-1 I got "no solution" because "d" cannot be negative. 3.|x^2-2x-16|=8 x= 6,-4 or x=4,-2 4.|3x-2|=7 x= 3 or (-5/3) 5.|x^2+2x+1|=-4 I got "no solution...
*Wednesday, September 19, 2012 at 9:11pm by Caroline*

**Algebra 1A**

I am so lost! Solve the equation and check the solution -6(t-2)-(t+3)=2 The solution to t is ??
*Sunday, September 23, 2012 at 2:05pm by Austin*

**Algebra**

Solve the equation and check the solution: -4(t+7)-(t+6)=10 the solution t is:
*Wednesday, May 16, 2012 at 1:04am by Angela*

**Algebra HELP**

Can someone check my answers? Solve for m: m + 6 = 3(2m - 4) a.4 b.-6/5 c.18/5 d.2 answer: c. 18/5 Solve the equation and check your solution: 3(x + 6) = 18 + 3x a. -6 b. 0 c. all real numbers d. no solution answer: b. 0 Solve the equation and check your solution: -2(x - 1) = ...
*Friday, February 18, 2011 at 3:08pm by Cheryl*

**chemistry**

A 3.75-G SAMPLE OF IRON ORE IS TRANSFORMED TO A SOLUTION OF IRON(II)SULFATE, FeSO4,AND THIS SOLUTION IS TITRATED WITH 0.150 M K2Cr2O7. IF IT REQUIRES 43.7 mL OF POTASSIUM DICHROMATE SOLUTION TO TITRATE THE IRON(II)SULFATE SOLUTION, WHAT IS THE PERCENTAGE OF IRON IN THE ORE? ...
*Tuesday, October 23, 2012 at 5:54pm by malissa*

**Math 116 algebra please check**

Solve -8¡Ü4x-7¡Ü-2 The solution is -1/4,5/4
*Wednesday, July 16, 2008 at 7:25pm by jay jay*

**Algebra II**

Help, Im stuck.... I cannot remember what to do. (x+6)(x-7)(x+4)>0 The solution set is....{x, } Thank you:)
*Monday, March 7, 2011 at 1:46am by Nancy*

**Math 116 algebra please check**

Solve 8x - (5x + 7)= 17 The solution is x= 8
*Wednesday, July 16, 2008 at 8:10pm by jay jay*

**Math 116 algebra please check**

Solve 5/2x + 1/4x = 9/4 + x The solution is x 9/10
*Wednesday, July 16, 2008 at 8:33pm by jay jay*

**algebra**

solve system graphically. be sure to check your solution. if a system has infinite number of solutions, use set builder notation to write the solution det. if a system as no solution, state this. a=1+b b=5-2a
*Wednesday, June 29, 2011 at 6:30pm by Anonymous*

**Algebra II-please check**

sin 38 = .6157 .6157 = 150/x 150/.6157 = 243.6
*Friday, January 7, 2011 at 2:07pm by Joseph*

**Math 116 algebra**

Please check this problem Solve 5/2x + 1/4 x = 9/4 + x The solution is x = 9/10 Is this correct.
*Wednesday, July 16, 2008 at 7:16pm by jay jay*

**Algebra II**

What is the solution to the system? 2x+y=9 x-2z=-3 2y+3z=15
*Monday, May 30, 2011 at 7:26pm by Kori*

**Algebra II repost- please check**

I posted these a little while ago but this time I have answered them. 1. Does the graph of y = x – 3x2 + 5 have a maximum or minimum? 2. What is the vertex of the graph of y = -2(x - 3)2 + 4? 3. Does the graph of y = -2(x - 3)2+ 4 open up or down? My answers: 1. I cannot ...
*Tuesday, November 27, 2007 at 8:06pm by JaneLee*

**chemistry**

the Ka for acetic acid, HC2H3O2, is 1.8x10-5 at 25 deg. Celsius. In a .10 M solution of potassium acetate, which of the following are true? I. [HC2H3O2] = [OH-] II. [H+] = [OH-] III. [C2H3O2-] < .10 M a. I only b. II only c. III only d. I and II e. I, II and III What is ...
*Sunday, April 22, 2007 at 8:05am by Anonymous*

**Chemistry**

The tin (II) fluoride in a 10.000 g sample of toothpaste is extracted into solution and them a precipitate of lanthanum (II) fluoride (LaF3) is formed by the addition of a lanthanum (III) nitrate solution. If the mass of the lanthanum (III) fluoride precipitate is 0.105g, what...
*Monday, July 29, 2013 at 11:37am by Colby*

**Algebra II (check)**

wouldn't it be 4x^2 + 12x + 9?
*Saturday, March 1, 2008 at 12:31am by Jon*

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