Wednesday
November 26, 2014

Posts by MONIQUE


Total # Posts: 296

math
p= x^2-25x+5000
November 21, 2014

Math
Complete the Square f(x)= -x^2+2x
November 18, 2014

Math
Thank You
November 17, 2014

Math
Complete the Square f(x)= -x^2 + 2x
November 17, 2014

Math
-10-6i / -9+9i
November 13, 2014

College Algebra
-10-6i / -9+9i
November 13, 2014

Pyschological Statistics
In a distribution with a standard deviation of eight, an individual score of 42 corresponds to a Z score of -0.5. What is the mean of this distribution?
October 8, 2014

Math
Billing office is trying to figure out the amount of 0.75 hour overtime for a worker who is paid $32.48 for A regular hourly rate. The overtime rate is 1.5 of his regular hourly rate. How much is 0.75 of an hour at the overtime rate for this worker
July 14, 2014

Algebra II
When asked to solve the rational equation 11/2x^2+x-15=5/2x-5-x/x+3 a student multiplied both sides of the equation by the expression (2x2+x−15)(2x−5)(x+3). Was this the best thing for the student to do? If not, what should the student have done?
July 13, 2014

physics
A particle (m=3*10^-6 g, q=5*10^-6 C) moves in a uniform magnetic field given by (60j) mT. At t=0 the velocity of the particle is equal to (30j - 40k)m/s. The subsequent path of the particle is? I know that the answer is: helical with a 40-cm radius. But i dont know the ...
July 1, 2014

Algebra II
Find the difference quotient for the following Rational Function f(x)=5/x using the four steps outlined below. a. find f(x+h) b. find f(x) c. substitute f(x+h) and f(x) into the difference quotient formula. d. simplify
June 23, 2014

Algebra II
In front of the letter n there is actually the pie sign
June 15, 2014

Algebra II
I wrote out the word pie in place of the actual symbol. Consider (pie n+pie n-1)(pie n-pie n-1)= 1 for n greater than or equal to 1. a) Provide two numerical examples illustrating its validity. b) Show the statement is true in general. c) What is the difference ...
June 15, 2014

Algebra II
Find the error in each of the following and provide an explanation of the mistake made. Thanks for the help. a) (3x/1/x-5)^1 =1/3x/x-1/5 b) (3x/1/x-5)^1 =-3x/5-1/x c) (3x-4y)^2 = 9x^2 + 16y^2 d) x^2-3/4+x^2=-3/4
June 15, 2014

Algebra II
The measure of the largest angle of a triangle is 90 more than the measure of the smallest angle, and the measure of the remaining angle is 30 more than the measure of the smallest angle. Find the measure of each angle. Show your work in obtaining your answer.
June 9, 2014

algebra
Write the numeral as a Roman numeral. 503,303 A. MMCCCIII B. MMMCCCIII C. MMCCCXIII D. MMCCIII
March 19, 2014

history
India's history has often been associated with the life and thought of Mohandas Gandhi. Gandhi insisted that all his followers remain nonviolent. For him, ahimsa (nonviolence) was essential. What accounted for the success of ahimsa? Can you think of any American parallels ...
January 21, 2014

computer science
Best practices for securing local networks?
November 18, 2013

science
a car eneters a freeway with a speed of 6.7 m\s and accelerates uniformly for 3.0 I 3.8 min . how fas the car moving after this time?
September 22, 2013

English
What comes to mind when you think of needing more time? Some examples might be studying, family, exercise, relaxation, a hobby, or building your business
April 17, 2013

college english
2 paragraph essay..What comes to mind when you think of needing more time? Some examples might be studying, family, exercise, relaxation, a hobby, or building your business
April 14, 2013

algebra
An investor invested a total of $2200 in two mutual funds. One earned 5% profit while the other earned a 3% profit. If the investor's total profit was $86, how much was invested in each mutual fund?
April 5, 2013

english
Trust in the Lord with all of your heart.Do not depend on your own understading.
March 1, 2013

Early childhood
Foundations of development
February 13, 2013

Physics
A trolley of mass 2kg accerates from rest across a rough surface at 2,5m.s.It experiences a frictional force of 3N.Calculate the velocity of trolley after 4s and the distance travelled by the trolley in 4s
January 23, 2013

alegbra 1
X+12+x<44
October 31, 2012

Math
use compatible number to estimate problem: 1,212 + 347 537 + 3,244 329 + 64
October 2, 2012

Comunication Skills
You speakers of Castilian Spanish and Cantonese Chinese may be especially vulnerable to environmental influences in the mainstream classroom because of their: A. oral traditions b. linguistic environments c. cultural histor d. dialectal dominance
September 7, 2012

MATH
IF I SOLD 592 TICKETS EACH FOR $6.00 EACH HOW MUCH MONEY WILL I MAKE
September 5, 2012

sci/275
on the emission calculator what was your highest contributor
August 21, 2012

health
lol me 25th
August 11, 2012

Chemistry
5g of calcium carbonate reacted with 0.5mols of sulfuric acid, what mass of carbon dioxide is produced?
June 3, 2012

math
If a serving size is 1/6 and at the end of the night the restaurant has 5 3/8 left how many servings are left?
May 4, 2012

physics
an electron has a kinetic energy that is 1.8 times its rest energy. What is its speed, expressed as a fraction of the speed of light?
April 16, 2012

algebra
Suppose you have a can of paint that will cover 400 ft squared. A. find the radius of the largest circle you can paint. Round to the nearest tenth of a foot.( hint use the formula A=3.14 times radius squared B. Suppose you have two cans of paint, which will cover a total of ...
April 12, 2012

Math
Moniques credit card charges interest of 20.85% per annum on unpaid balances on her march 12 statement. she had a balance of $739.65 due by the due date, she made the minimum payment (5% or 10.00, Whichever is greater.) On march 16. She made a purchase of $179.39 a)If she ...
April 10, 2012

Geometry
Which of the following can be used to describe the triangle with the vertices listed below? F(-1, 2), G(-10, 2), H(-12, -11) I. acute II. obtuse III. right IV. scalene V. isosceles VI. equilateral --------Please help!!! Explain.
March 26, 2012

Geometry
two perpendicular lines with the equations y=1/3x+9 and y=mx-3 contain the consecutive sides of a rectangle. What is the value of mx in the 2nd linear question.
March 25, 2012

geometry
During the half-time show of a football game, a trumpet player and a tuba player start at the same position on the field. The trumpet player then marches 74.8 ft directly toward the goal line, and the tuba player marches directly toward the sideline. At the end of their march...
March 25, 2012

Geometry
A right triangle with G and F as the two base angles and E as the top angle. Side EF is Y, side FG is x, while side EG is 2x. If Y = 15, what is the value of x? ----Please help, and explain.
March 25, 2012

Algebra
Two perpendicular lines with the equations y=1/3x+9 and y=mx-3 contain consecutive sides of a rectangle. What is the value of m in the second equation?
March 25, 2012

Geometry
Which of the following can be used to describe the triangle with the vertices listed below? F(-1, 1), G(-8, 1), H(-9, -10) I. acute II. obtuse III. right IV. scalene V. isosceles VI. equilateral -----Please show me how you got the answer
March 25, 2012

Pre-cal
Does the equation x^2+x-12/x+2 have holes?
March 21, 2012

bio
The cell membrane is a highly selective barrier that controls the movement of substances in and out of the cell. In fact, polar molecules are unable to go across unless A. they are enclosed in water-filled vesicles. B. they pass through channels in the cell membrane. C. they ...
March 21, 2012

biology
Food that is consumed often enters the body in the form of large organic molecules, such as proteins and starches. Prior to entering cells, however, these large molecules must be broken down into smaller molecules. For example, proteins are digested into _______ prior to ...
March 21, 2012

biology
Organisms must be able to adapt to a changing external and internal environment. An organism's ability to maintain a stable internal environment is known as homeostasis. How does a cell's membrane help an organism maintain homeostasis? A. Cell membranes use a large ...
March 21, 2012

Geometry
Find the equation of the line passing through the given points (1,5) (2,7) please show work
February 28, 2012

chemistry
how many chloride (CL negative two) ions are needed to balance a positive charge of Barium positive two?
February 21, 2012

physics
When a mass of 28 g is attached to a certain spring, it makes 19 complete vibrations in 3.9 s. What is the spring constant of the spring? Answer in units of N/m
February 16, 2012

Physics
A mass of .24 kg is attached to a spring and is set into vibration with a period of .30 s. What is the spring constant of the spring? Answer in units of N/m
February 16, 2012

Geometry
Angle A and Angle B are complementary andgles and the m Angle A = 58 degrees, what is he measure of the supplement of Angle B. This is what I did Angle A and Angle B = 90 degrees, mAngle A = 58 degrees 90 - 58 = 32 degrees 180 - 32 = 148 M angle B supplement = 148 degrees Am I...
February 6, 2012

Geometry
Z is between I and P. Solve for x and find IP. IZ= 3x+5 ZP= 4x+13 IP= 15x-22
January 29, 2012

Communication
Imagine you are the office manager for a medical practice and have recently attended a conference where you learned about active listening and its benefits. You want to share the information with your practice’s staff.
December 26, 2011

MATH
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 174 and a variance of 9. The material is considered defective if the breaking strength is less than 168 pounds. What is the probability that a single, randomly selected piece ...
December 11, 2011

Math
a mountain with a base 5977 feet below sea level rises 17365 feet. what is the elevation of its peak
December 10, 2011

Chemistry
50.0 ml sample of ethylene has a mass of 55.505g. Find the density of ethylene.
December 7, 2011

chemistry
calculate the amunt of heat required to completely boil 250g of water starting from room temp 22 degrees C
December 6, 2011

chemistry
why does rubbing alcohol feel cold when its applied to the skin?
December 6, 2011

chemistry
calculate the heat liberated when 118g of water at 0 degrees C is frozen?
December 6, 2011

chemistry
Potash is composed mainly of potassium carbonate, K2CO3. If 1.000g of potash reacts with sulfuric acid to produce 145 mL of carbon dioxide gas at STP, what is the percentage of potassium carbonate in the marble sample? K2CO3 + H2SO4 ==> K2SO4 + H2O + CO2
November 28, 2011

chemistry
A wooden boat discovered just south of the Great Pyramid in Egypt had a carbon - 14 content of approximately 50% of that found in living organisms. How old is the boat?
November 26, 2011

chemistry
A radioactive sample contains 2.45g of an isotope wiht a half life of 3.8 days. How much of the isotope in grams remains after 11.4 days? please explain
November 26, 2011

chemistry
Silver is electroplated at the cathode of an electrolysis cell by the half reaction Ag+(aq) + e- --> Ag(s) How many moles of electrons are required to electroplate 5.8g of Ag?
November 25, 2011

chemistry
O# of Cr(OH)4- How did you get +3
November 25, 2011

chemistry
Balance the redox reactin in basic. ClO- + Cr(OH)4- --> CrO42- + Cl- H2O + ClO- --> Cl- + 2OH ClO- has a +1 O# and Cl- has a -1 O# how do I balance that. And is what Ive done so far correct? Cr(OH)4- --> CrO42- Im confused on how to balance the oxygen and hydrogens ...
November 25, 2011

chemistry
please help this equation is driving my crazy. balance the following redox reaction in basic solution. H2O2 + ClO2 --> ClO-2 + O2
November 23, 2011

chemistry
Balancing Redox Reaction in Basic Solution CN- + MnO-4 --> CNO- + MnO2 H2O + CN- --> CNO- + 2H +2e 3e + 4H + MnO4- --> MnO2 + 2H2O My confusion is with adding the OH- please explain
November 22, 2011

chemistry
Oxidation CN- C=2+ N=3- Can you explain how C is 2+
November 22, 2011

chemistry
Am I headed in the right direction. Sn + MnO4- --> Sn2+ + Mn2+ Sn --> Sn2+ + 2e- 5e + 8H + MnO4- --> Mn2+ + 4H2O If Im right what is the whole number that Im multiplying by
November 20, 2011

chemistry
I can see that now thank you very much
November 20, 2011

chemistry
Please explain this to me 2I- --> I2 + 2e Cr2O72- ==> Cr3+ 6e + 14H + Cr2O72- ==> 2Cr3+ + 7H20 I dont understand how the left side gets 6 electrons.
November 20, 2011

chemistry
Balance the following redox reaction occurring in acidic solution Cu(s) + NO3-(aq)--> Cu2+(aq) +NO2(g) This is what I have done so far Cu-->Cu2+ + 2e- 2H + NO-3 --> NO2 + H2O Need help please
November 20, 2011

chemistry
Balance the following redox reaction occurring in acidic solution. H+ + Cr --> H2 + Cr3+ H+ --> H2 do I add H+ to this side since H2 = 0? Also what about electrons. Cr -> Cr3+ + 3e- Hope I make sense
November 18, 2011

chemistry
Fe2+ + MnO-4 --> Fe3+ + Mn2+ Fe2+ = +2 Mn = +7 O-4 = 4(-2) = -8 Fe3+ = 3+ Mn2+ = 2+ ok so next I gave 8H to MnO-4 and 4 H20 to Mn2+ Next I starting adding my electrons. 1e- to Fe3+. I understand that. This is where Im lost according to my book I give 5e- to the reactant ...
November 18, 2011

chemistry
How does the N in NO2 have a oxidation state of 4+ please explain
November 18, 2011

chemistry
use oxidation states to identify the element that is being oxidized and the element that is being reduced in the redox reaction Sn + 4HNO3 ---> SnO2 + 4NO2 + 2H2O I see that SN is oxidized 0 --> 4+ and book says N is reduced +5 --> +4 I dont see that. Please help
November 18, 2011

chemistry
A rolaids tablet contains calcium carbonate which neutralizes stomach acid. If rolaids tablet neutralizes 42.15 mL of 0.320M hydrochloric acid, how many milligrams of calcium carbonate are in a Rolaids tablet CaCO3 + 2 HCl ------> CaCl2 + H2O + CO2 Pls show steps
November 15, 2011

chemistry
ok DrBob the answer i got was 2.7 x10-5 am i correct
November 12, 2011

chemistry
What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32- Chemistry - DrBob222, Friday, November 11, 2011 at 5:34pm Ksp = (Mg^2+)(CO3^2-) Substitute 0.25M for CO3^2- and ...
November 12, 2011

Chemistry
Name 3 buffers that exist in the human body? Include the conjugate and acid base pairs
November 11, 2011

Chemistry
For the reaction 2 N2O <===>O2 + 2 N2 what happens to the equilibrium position if the pressure is increased
November 11, 2011

Chemistry
Second thought I just don't understand what to do. pH= pKa + log [NH3]/[NH4NO3] pH= -l log ? + log (0.005/?) pH= ? pH= ?
November 11, 2011

Chemistry
Don't think I know how to calculate the M of NH4NO3
November 11, 2011

Chemistry
So is it a problem if the conch of NH4NO3 was not given to me. Or do I just assume it's the same as the NH3
November 11, 2011

Chemistry
Calculate the pH buffer made by combing 50.0 mL of 1.00M ammonia and 50.0mL of ammonium nitrate. Can I use the same formula? If so do I do anything with the mL
November 11, 2011

chemistry
DrBob I want to thank you SOOOOO much for all the help you give. I had never heard of the H H equation. And I also appreciate you patience
November 11, 2011

chemistry
This what I did log(1.76 x 10-5) +log(0.150/0.200) = 4.879
November 11, 2011

chemistry
No I'm sorry I just used this as the example of the H H equation
November 11, 2011

chemistry
pH = pKa + log ([A-]/[HA]) pH = pKa + log ([C2H3O2-] / [HC2H3O2]) pH = -log (1.8 x 10-5) + log (0.50 M / 0.20 M) pH = -log (1.8 x 10-5) + log (2.5) pH = 4.7 + 0.40 pH = 5.1 I used this example And I still got it wrong it should have been 4.75 + 0.12 = 4.87 or do I use just 4.7...
November 11, 2011

chemistry
Ok DrBob I think I got it after all the plugging in my final answer is 5.45 I hope
November 11, 2011

chemistry
calculate the pH of a buffer solution containing 0.200M acetic acid, HC2H3O2, plus 0.150M sodium acetate. The dissociation constant for HC2H3O2 is 1.76 x 10-5 I dont think our instructor gave enough notes on these things Im kind of winging it from the book. Could you please ...
November 11, 2011

chemistry
I'm stuck Ka=1.84 x 10-4= x x/ 0.125 (1.84 x 10-4)[0.125] 2.3 x 10-5= x = [H30] lost which way do I go
November 11, 2011

chemistry
DrBob is the HCOOH---->H^++HCOO^ the HCHO2
November 11, 2011

chemistry
calculate the hydronium ion concentration in 0.125M formic acid, HCHO2 Ka= 1.8 x 10-4 can you show me the steps pls
November 11, 2011

Chemistry
What happens to the equilibrium constant when a catalyst is added to the reaction mixture. A. Increase B. Decrease C. Does not change D. Varies E. None of the above I chose c
November 11, 2011

Chemistry
What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32-
November 11, 2011

Chemistry
For the reaction Ag2S <====> 2Ag + S2 what happens to the equilibrium position if aqueous ammonium sulfide is added A. Shift left B. Shifts right C. Does nothing D. Doubles E. Halves
November 11, 2011

Chemistry
Identify the equation for which Keq= [Cu+]2[S2-]
November 11, 2011

chemistry
I got - log (0.0045) = 4.75
November 11, 2011

chemistry
what is the ph of a solution that has [H] = 0.0045 can you show steps pls
November 11, 2011

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