Sunday
April 20, 2014

Posts by kim


Total # Posts: 1,974

chemistry
Explain why a suspension is considered a heterogeneous mixture?

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

Trig Proofs
Thanks so much for the help=)

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

algebra
-2x7= -3 +t+24 -14= =3+t+24 -11= t+24 -35= t

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

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

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 solut...

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?

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

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!

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?

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 .

math
would it be 30

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

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.

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)?

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

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?

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.

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.

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?

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?

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.

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.

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?

Algebra
THANKS!

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

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

Algebra
Thanks for your help :)

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

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

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

Algebra
Thank you for all your help! :)

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

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

science
what are three fresh water resources and what are three ocean water resources?

Environmental Science
What are three fresh water resources and three ocean water resources

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

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

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)

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)

medical information management and office practice
Explain the difference between qualitative and quantitative medical record analysis.

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

math/slope-intercept form
2x+y=5

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.

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.

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"

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

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.

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 m...

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

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!

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

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

ethics
I need help i just dont understand it can someone PLEASE help me!!!!!!!!!

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...

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 ...

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 fal...

discrete math
what is the link between matricies and graph theory

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.

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?

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?

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

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

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.

geometry
how do you do linear measure and precision

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

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

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

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.

Math
5x-6(-5x + 2) = 16

mechanics
An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon?

Algebra
input =9 output = 2 what is the function. input = 27 output = 8 what is the function. input = 42 output = 13 what is the function input = 3 output = 0 what is the function.

Algebra
input function output 9

Algebra
Can someone help me with this one? Find all numbers for which the rational expression is undefined. 6/4w+5 Thanks

6th grade_Science/Math
Thank you Francis! I didn't get it. :)

Is this imagery?
Is this a metaphor or imagery? "The ground is wet, and smells of smoke; it feels soft and spongy to his touch."

Is this imagery?
He hooks an arm around his son's neck and is at once caught in a fierce embrace. He smooths the dark head wedged against his shoulder, brushes the hair aside at the back of his neck to touch bare skin.

Algerbra
Thank you for your help, it is width. So i take the 2and times it by the 27. With that answer figure out the difference between the 2 times 27 and minus from 100 then divid by 2. Is this the way to figure out the problem?

Algerbra
Can anyone help me on these two problems also. I am getting so confused and tired. The length of a rectangle is fixed at 27cm. What lengths will make the perimeter greater than 100cm? also this problem Trians A and B are traveling in the same direction on parellel tracks. Tria...

Algerbra
I have a couple of problems that i am stuck on. They are word problem. 1 Soybean meal is 12% protien; cornmeal is 6% protien. How many pounds of each should be mixed together on order tyo get 280 pounds of mixture that is 11% protien? How many pounds of the cornmeal should be ...

math
Mr. Cline needs 36 ice cubes for the science experiment. Eack ice tray makes 12 ice cubes. If he makes 4 ice trays, does he have enough ice cubes? Can you use an estimate to solve? Explain.

College math
A planehas 7 hrs. to reach a target and come back to base. it flies out to the target at 480 miles per hr. and returns on the same route at 640 miles per hour. how many miles from the base is the target?

8th Grade Algebra: Answer Check #2
can u hlep me

8th Grade Algebra: Answer Check #2
y=x2+-24

Algerbra
One day a store sold 35 sweatshirts. White ones cost $9.95 and yellow cost $12.50. In all, $389.05 worth of sweatshirts were sold. How many of each color were sold? How many white sweatshirt were sold? How many yellow sweatshirt were sold? I can not figure out how to do this p...

Algebra
The base of a triangle is 8cm greater than the height. The area is 42cm^2. Find the height and length of the base.

4th grade
what volume of helium would be in a balloon the size of a 2liter soft drink?

spelling
thro?

Math
josh that is the right answer by kimberly and I think you go to my school write back josh

Math
math is kinded of hard for me but I try my best in math and please solve my math problem and see if its right sinccer kim and 1 think can you spell sinccer please thank you very much anybody and sue

Math
5*5*5*5*5<40 than you do 5*14<70+4<74 5^2< 7

math
livly tempo kimberly

healthcare
what ethical issues might arise by relying more and more on technology in Health Care or Human Service? As you answer,consider ethical issues from a consumer’s perspective and from a Health Care or Human Service worker’s perspective.

public health
Review this artile: Hutt, J. & Wallis, LA. (2004). Injuries caused by airbags: a review. Trauma, 6, 271-278 and answer following: How did the researchers use the literature to explain a public health phenomena? How was the literature used to show the necessity for the research...

adult education
Review this artile Hutt, J. & Wallis, LA. (2004). Injuries caused by airbags: a review. Trauma, 6, 271-278 and answer. • How did the researchers use the literature to explain a public health phenomena? • How was the literature used to show the necessity for the resea...

Math
let f(x)= x+3/x-11 and let the domain of the function be the set of all intergres except 11. Find the function values f(9)=

Math
Write the first five terms of the sequence whose nth term is -7n-4.

MATH FOR TEACHERS
Would you please explain further I am lost?

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