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July 29, 2015

Posts by Kim


Total # Posts: 2,302

pre algebra
solve and check the following equation: 6(g-6)=5g-2-g
June 9, 2009

pre algebra
solve and check the following equation:I have no idea as to how to answer this. 69g-60=5g-2-g
June 9, 2009

histidine basic/nonbasic nitrogens
For the amino acid histidine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded nitrogen as well.. so ...
June 6, 2009

amino acids
sorry i was referring to hisidine
June 6, 2009

amino acids
For the amino acid Lysine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded nitrogen as well.. so ...
June 6, 2009

math
1/4^n then change from positive to negative alternatively. then sequence shown goes to n=5.. therefore the next value at n=6 should be -1/4^6 = -1/1024
June 5, 2009

alanine r or s configuration?
is alanines configuration S?
June 5, 2009

Lysine Basic/Nonbasic Hydrogens
For the amino acid Lysine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded nitrogen as well.. so ...
June 5, 2009

chemistry
a. neither b. products/reactants <1 therefore there is more reactants, so the reaction will try to proceed forward to increase products in order to get to equilibrium. c. opposite of b
June 5, 2009

Algebra
Sorry about that! here it is again! 1/x+2 + 4/x^2-4
June 3, 2009

Algebra
Please Simplify: 1 4 --- + --- x+2 x^2-4
June 3, 2009

7th grade
I need to find out the missing variable. 10 x n - 55 = 155 n=
June 2, 2009

English
ya so I have to write this essay and I'm completly lost Were reading the story The Stranger which I have already finished about a week ago I remember this guy who meets this one guy and a dog and the main charecter dosent' care if he gets maried to this girl who want ...
May 31, 2009

Algebra 2
thank you so much for the help earlier can you tell me if I did this one right 2/(cuberroot16)= (2cuberoot16)/16 it seems to simple
May 31, 2009

Algebra 2
could you walk me thorugh these problems simplfy square root 18 - 3 times sqaure root of 50 plus 5 times the square root of 80 - 2 times the square root of 125 I'm having troubles with the square root of 80 all of the other radicals can be simplfified with a 2 in the ...
May 31, 2009

Physics
I'm haivng troulbe proving the deriviation of this formula on my own... could you please help me derive the proof of the formula or maybe show me one thansk... I need to prove this formula period of a mass spring system in simple harmonic motion T = 2 pi square root of (m/...
May 30, 2009

General
I do not know what subject to put this uh ok how do I put this into one cell into microsoft excell into one cell - .49 m when i put "-" it thinks I'm entering a formula which is not what I'm tyring to do i want negetive .49 m m being meters into one cell and ...
May 30, 2009

Math
How do I transform this into simple radical form... I have no idea how to do this could you please tell me the logic behind how you do this and step by step thanks (5^(1/2)-3^(1/2))^2 thanks again Also can you tell me how to transform this one into radical form also 18^(1/2)-3...
May 28, 2009

6th grade genetics
I think that would be called heredity.
May 26, 2009

Statistics
Suppose 52 of the students in class have a calculator and 14 have a computer. It is known that 4 do not have either a computer or calc and there are 64 students in the class. Find the probability that a randomly chosen student has a computer AND a calculator. I know this is an...
May 26, 2009

Statistics
You have heard the commercial for the restaurant that lets you pick any 3 appetizers, any of the 6 entree items and then a dessert. You have been told there are 72 different meal options. How many desserts are available? I don't understand how to calculate this. I know how...
May 26, 2009

Pre-Algebra[URGENT]
-5w(2w^2-w-9)
May 26, 2009

7th Grade Life Science
An exoskeleton.
May 22, 2009

English
I remember i was in English Honors in the 9th grade and we would have stupid words like that on our vocab list. Just goes to show how retarded the school system is and how little they expect of us.
May 21, 2009

chemistry help
Describe how you would prepare 250.0 mL of a 0.500 M solution of NaCl by using apparatus found in a chemistry lab.
May 20, 2009

grammar
I have to identify each word in the following sentence with a "part of speech"..... "The Southwest is a section of the country rich in natrual wonders". What is "The" and "A"?
May 19, 2009

algebra
solve 0.07-0.003x+0.2=1.02
April 30, 2009

algebra
need help asap please??!!
April 29, 2009

algebra
solve 0.07-0.003x+0.2=1.02
April 29, 2009

chemistry
Explain why a suspension is considered a heterogeneous mixture?
April 28, 2009

Trig Proofs
Please solve this proof Tan(pi/4 +x)+ Tan(pi/4+x)= 2Sec2x
April 27, 2009

Trig Proofs
Thanks so much for the help=)
April 27, 2009

Trig Proofs
Please Help: please solve this proof: cosx- cosy = -2sin(x+y/2)sin(x-y/2)
April 27, 2009

algebra
-2x7= -3 +t+24 -14= =3+t+24 -11= t+24 -35= t
April 27, 2009

Algebra
Can someone please check my work for me. Q: Plot the graph of the equations 2x - 3y = 5 and 4x - 6y = 21 and interpret the result. A: 6(2x ¨C 3y = 5) = 12x ¨C 18y = 30 3(4x - 6y = 21) = 12x - 18y = 63 12x ¨C 18y = 30 + 12x - 18y = 63 0 ¡Ù 93
April 26, 2009

Algebra
would it be correct to say that the equations are not independent therefore they have an infinite solution set.
April 25, 2009

Algebra
so can you tell me if this is correct.... 4x – 5y = 14 -12x + 15y = -42 15(4x – 5y = 14) = 60x – 75y = 210 5(-12x +15y = -42) = -60x + 75y = -210 60x – 75y = 210 + -60x + 75y = -210 = 0 The equations are not independent therefore they have an infinite ...
April 25, 2009

Algebra
with the first one was i suppose to multiply it by -3? i multiplied the first equiation by 15 and the second by -5. does it matter?
April 25, 2009

Algebra
what about this one? I'm having a tough time with this one as well... Solve by substitution or elimination method: -2x + 6y = 19 10x – 30y = -15
April 25, 2009

Algebra
Solve by substitution or elimination method: 4x – 5y = 14 -12x + 15y = -42 when i try this solution i end up cancelling out the whole problem. can someone please help me!
April 25, 2009

Trigonometry
A painter needs to cover a triangular region 62 meters by 68 meters by 70 meters. A can of paint covers 70 square meters. How many cans will be needed?
April 24, 2009

math (ruler)
I need help finding the mesurment in a ruler the little bitty mark could you pull up a ruler for me with all the marks .
April 22, 2009

math
would it be 30
April 22, 2009

math
round to the nearest ten dollars, then estimate the answer/ $73.88=---dollars +29.04----dollars ------------------ Total-----dollars
April 22, 2009

math
how would you create an equation for sec(2x) using both sec(x) and csc(x)? the steps i have so far are 1/(cos^2(x)-sin^2(x)) = 1/(1-1)/(sec^2(x)-csc^2(x)) but then i do not know what to do after this.
April 19, 2009

math
how would you determine a formula for cot(2x) using only cot(x)? Thenhow would you determine a formula for sec(2x) using only sec(x)?
April 19, 2009

math
when you are determining a formula for cot(2x) using only tan(x) would the formula be...(1-tan^2(x))/(2tan(x))?
April 19, 2009

math
when 2 lines intersect and form an acute angle A and both lines have a positive x-intercepts but the y-intercepts are on opposite sides of the origin. How would you write an equation showing the relationship between A and the angles that the normals make with the positive x-axis?
April 18, 2009

Science
If the density of ice is 0.92 g/cm^3, what percent of an ice cube’s (or iceberg’s) mass is above water.
April 15, 2009

physical science
An object in the shape of a cube has a mass of 375 grams and a side that measure 5.0 cm. Will this object float in water? Prove your answer by comparing the density of the cube to that of water.
April 15, 2009

math
if you have the triangle ABC with the points A(47,100) B(-1273,203) and C(971,-732) how would you find the center point and the radius of the incircle of triangle ABC?
April 15, 2009

math
if you have the triangle ABC with the points A(47,100) B(-1273,203) and C(971,-732) how would you find the center and the radius of the incircle of triangle ABC?
April 13, 2009

sociology
the gradual transition from monarchy topolitical democracy during the last half of the second millennium stimulated a corresponding transition from imperial rule by the power of the sword to imperial rule by the pwoer of money.
April 13, 2009

math
how would you factor (5(x+2)^4)+(3x(x+2)^3)-(2x(x+2)^2). I have so far gotten it down to 2(3x^4+25x^3+74x^2+92x+40) but i'm not sure that i am doing this right.
April 5, 2009

Algebra
Ella is twice Bella's age, and Stella is three times Bella's age. The difference between Stella's and Bella's ages is 8 yrs. How old is each girl?
April 5, 2009

Algebra
THANKS!
April 3, 2009

Algebra
So no 1 goes above that? as in 1 ------- 2^2*7^8?
April 3, 2009

Algebra
Simplify (2^-1∙7^-4)^-2 Is it 1/2^2*7^8 OR simply just 2^2*7^8
April 3, 2009

Algebra
Thanks for your help :)
April 3, 2009

Algebra
Is it the same thing? I don't know, but my first choice was A. I still do not understand how (p-4+m p2m)-4 / (p-4)-m = (p-4+3m)-4 / p4m = p^16-12m / p^4m where does the 12 fit in? and how does the answer end up as A? = p16-16m
April 3, 2009

Algebra
Ok but the answer is typed incorectly choice A is p^-16+16 not = p^16-16m
April 3, 2009

Algebra
Where did you get 3m from? The problem reads Simplify (p^-4+m p^2m)^-4 ---------------- (p^-4)^-m Theses are the choices A) p-16m + 16 B) p-8m – 4 C) p-11m – 4 D) p-3m + 16 I say its A or B
April 3, 2009

Algebra
Thank you for all your help! :)
April 3, 2009

Algebra
What about breaking the fractions a part like this? 5x -2 - 3y -1 = 5 - 3 ----------------- x -1 + y -1 ------- x^2 y --------------------- 1 + 1 ------------ x y = 5y+3x^2 * x^2 y -------- x+y x^2 y(5y+3x) = 5xy^2 + 3x^2 y
April 3, 2009

math
how would you find an equation to a line that is parallel and 3 units away from the line x-5y+10=0?
April 3, 2009

science
what are three fresh water resources and what are three ocean water resources?
April 2, 2009

Environmental Science
What are three fresh water resources and three ocean water resources
April 2, 2009

Algebra
Why would it be this because a*a is 2a? I thought at first it is a^2? Can you please explain, thanks!
April 2, 2009

Algebra
a*a = a^2? yes? No? Or is it (m + 4) (2a – 2)
April 2, 2009

Algebra
Factor (m + 4) (a – 5) + (m + 4) (a + 3) I am pretty sure its this but want to double check! Thanks! (m + 4) (a^2 – 2)
April 2, 2009

Algebra
There is no division necessary here? So the final answer is what is @ the bottom? (5x^-1)-3 (-2+1=-1, and -1+1=0)
April 2, 2009

medical information management and office practice
Explain the difference between qualitative and quantitative medical record analysis.
March 31, 2009

math
how would you prove that (cos^2x-sin^2x)(1-cos^2xsin^2x)= (cos^6-sin^6)?
March 30, 2009

math/slope-intercept form
2x+y=5
March 28, 2009

Pre-Cal
Perform the operation and write the result in standard form. (2-3i)(5i) over 2+3i Please help!! I do not understand this.
March 25, 2009

Pre-Cal
Perform the addition or subtraction and write the result in standard form. (8+sqrt -18) - (4+3sqrt2i) I know that you have to subtract 8 from 4 but I do not know what to do after this.
March 25, 2009

7th grade reading
I know this was already answered,but the child would be possessive if she does not share her toys. It is the synomem for "overprotective"
March 24, 2009

3rd grade reading/spelling
What does it mean to adjust and monitor reading speed?
March 24, 2009

math
from a base elevation of 8500 ft, a mountain peak in colorado rises to a summit elevation of 14595 ft over a horizontal distance of 15842 ft. find the grade of the peak.
March 22, 2009

Physics
As the distance between an object and the center of the Earth is increased 1)the object's mass decreases and its weight remains the same. 2)both the object's mass and its weight remain the same 3)both the object's mass and its weight decreases. 4)the object's ...
March 19, 2009

grammar
Suboridiante clauses: What is the subordinate clause in the sentence: May the dreams you dream today be tomorrow's dreams come true.
March 19, 2009

Marine Science
What happens to the majority of water at the poles and at the equator? My answer was that at the poles the water gets cold and at the equator the water gets hot but my teacher said this was wrong. Please help!
March 18, 2009

ethics
that president of mix race will save your dumb butt you probably voted for bush didnt you that why america is in the shape it is in now because of people like you get a clue
March 16, 2009

ethics
i dont understand what they mean when they said my i dont understand i got everything except the ast question.
March 16, 2009

ethics
I need help i just dont understand it can someone PLEASE help me!!!!!!!!!
March 16, 2009

ethics
Write a 200-300 word summary that answers the following questions: what information about race and ethnicity in the united states has helped you better understand or relate to specific minority groups?, Have you learned something new about your own cutural history?, trends in...
March 16, 2009

statics
16. The Roper Organization conducted identical surveys in 1990 and 2000. One question asked women was, “Are most men basically kind, gentle, and thoughtful?” The 1990 survey revealed that, of the 3,000 women surveyed, 2,010 said that they were. In 2000, 1,530 of the ...
March 15, 2009

Physics
Jessica's weight is 540 newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 newtons that acts in the opposite direction. However, if Jessica stumbles while rollerblading, she will ...
March 15, 2009

discrete math
what is the link between matricies and graph theory
March 14, 2009

Parametric curves and area
1.The curve of x=49-t^2 and y=t^3-1*t makes a loop which lies along the x-axis. What is the total area inside the loop? 2.Find the area of the region enclosed by the parametric equation: x=t^3-7*t and y=4*t^2.
March 10, 2009

Calculus-Modeling Equations
An unknown radioactive element decays into non-radioactive substances. In 420 days the radioactivity of a sample decreases by 39 percent. 1.What is the half-life of the element? 2.How long will it take for a sample of 100 mg to decay to 46 mg?
March 6, 2009

Chemistry
How many moles of KMn)4 are required to reach with the moles of Na2C2O4 in the last problem? and also, if the KmnO4 of the last problem is in 30.30mL of solution what is the molarity (M) of the KmnO4 solution?
March 3, 2009

Chemistry
how many moles of Na2C2O4 are there in 25.00 mL of a .7654 M solution of sodium oxalate?
March 3, 2009

Chemistry
thank you. so what did you get as a final answer for this problem then? and what did u do after doing 2.2=2PHN3 and after subsituting the partial pressure?? Thanks
March 2, 2009

Chemistry
How do you solve this: Consider the decomposition of ammonium chloride at a cerain temperature NH4Cl(s) <- NH3(g) + HCl(g) -> Calculate the equilibrium constant Kp if the total pressure is 2.2 atm at that temperature.
March 2, 2009

geometry
how do you do linear measure and precision
February 26, 2009

4th grade english
Earlier this year, our class ______ a greenhouse. (visit) Would the correct form be has visited
February 22, 2009

Accounting
Hello, I am taking an accounting class and the questions states "post to the accounts and keep a running bakance for each account" the question gives a page number to refer to but it does not provide any guidance. What does these means?? Thanks
February 22, 2009

Math
Determine whether the function is one-to-one. If it is, find itd inverse. f(x)= 3x+4 over 5
February 19, 2009

Math
Use a graphing utility to approximate (to two-decimal-place accuracy) any relative minimum or maximum values of the function. y=x^3 - 6x^2 + 15 My answer was (4,12) for min and(0,-12) for max.
February 18, 2009

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