Posts by caroline
Total # Posts: 368

English
hey, I have to write an essay about ''challenges posed by differing concepts of health held by healthcare professionals and the general public'' I don't really know what to talk about. I started by explaining what health is but what challenges might be there? 
Biology
what does this mean: the rate of blood flow to an organ is related to resistance to flow in the small arteries and arterioles 
Learning
exactly, it seems very confusing. Well the question states : write a few paragraphs highlighting changes (both positive and negative) that enhance learning  i missed that day at school but i was told the question is referring to the skills and i just don't know what to ... 
Learning
I have to write a few paragraphs on the changes in the skills (both positive and negative) that enhance learning. Now, I wrote a good bit on the positive changes such as improvement in the IT skills, communication, time management etc but what could be the examples of negative... 
math
what is one fourth of eight 
English language
what could be an example of something that is urgent but is not important? and something that is important but not urgent? these questions refer to daily actions or well any actions, i have absolutely no idea how to answer that. Sure doesn't urgent and important meant ... 
english
A. a desk stocked with supplies. B. a relaxing area such as your bedroom. C. ample amounts of natural light. D. comfortable and balanced temperature 
Math
Prove these identites I really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2cos^2 sin^2 sec^2 +sin^2=tan^2+sin^2 
Calculus
I meant the same final answer, because now I get 28/3 and 100/3 
Calculus
I get the same answer... 
Calculus
I know I posted this problem earlier but I don't think it will be seen anymore since it's almost at the end of the page: Find the total mass of the triangular region with coordinates (1,0),(0,4),and (1,0). All lengths are in centimeters, and the density of the region ... 
Calculus
What I did was: INT (1,0) (4x+4)(5+x) dx INT 4x^+36x+20 I integrated and got (4/3)x^3+18x^2+20x and evaluated from 1 to 0 and got 10/3 g and then from 0 to 1 and got 118/3 grams added and got 128/3 g and that's not the answer. What am I doing wrong? 
Calculus
Find the total mass of the triangular region with coordinates (1,0),(0,4),and (1,0). All lengths are in centimeters, and the density of the region is (x)=5+x grams/c^m2. I know that to get the total mass i have to do density* lenght and ingegrate, but I don't know how to ... 
calculus
The given curve is rotated about the yaxis. Find the area of the resulting surface. y = 1/4x^2 − 1/2ln x, 4 ≤ x ≤ 5 The answer is supposed to be 64/3*pi 
Calculus
A steady wind blows a kite due west. The kite's height above ground from horizontal position x = 0 to x = 60 ft is given by y = 150 − 1/40(x − 50)^2. Find the distance traveled by the kite. (Round your answer to one decimal place.) THe answer is supposed to be ... 
Physics
Supercapacitors, with capacitance of 1.00F or more, are made with plates that have a spongelike structure with a very large surface area. Determine the surface area of a supercapacitor that has capacitance of 1.0F and an effective separation between the plates of d=1.0 mm So ... 
Science
because if you were talking it would be hard to understand when you are talking to peaople 
life orientation
2 institutions that redress teenage pregnancy 
geometry
if ac=7x+5 and bd=14x2,what is the value for ac? 
spanish
Que estuduias 
Good Reads? 6th and 7th grade
the outsiders// more 7th stargirl// good for both holes// both hope this helps a bit!! 
MAth
I see what you are saying, but how do I work this problem using the percent increase/decrease formula ? 
MAth
I am working a percent change word problem 340 employees total and 56 laid off.? percent of decrease in employees. 34056= 284 284 divided by 340 = 0.835 = 83% the book has an answer of 16% what am I missing or is the book incorrect? 
MAth
what is the difference between 16/1 and 1/16 as fractions ? 
MAth
5(2x  10)/2 + 14 = 19 Tried working this, need helpplease 5x50/2 or 10x  50/2 
MAth
50=3(s = 16) 2(s  2) I tried 3s+2s  484 = 50 5s  44 44 = 50  44 am I on the right track ??? 
MAth
a concrete area measures 20ft on each side. the concrete slab will be 8 inches deep. how many cubic feet of concrete will be needed? my set up is 20 x 20 + 32 ???? 
MAth
I don't know how to begin this onehelp Janie bought 2 pairs of identical jeans at a sale.she paid regular price for the 1st pair and paid half price forthe 2nd pair.if the the total cost was $45.00,what was the regular price of the jeans? 2x1/2x=45 ?? 
MAth
got it, thanks 
MAth
4x divided by 4 = x 40 divided by 4 =10 
MAth
so x + 6+3x =46 4x + 66 = 46  6 4x/4 = 40/4 x = 10 ???? it should be 36 what am I missing? 
MAth
jerry is 6 more than 3 times as old as his son.together they are 46 yrs old. how old is jerry. ans 36 I set up problem 6+3x=46 to start? 
MAth
I set this problem up as 5002X=3,400 Marys monthly salary is $500 less than twice her daughter's salary. Together they earn $3,400 each month. How much is the daughter's salary. ans1,300 5005002x=3,400500 2x=3,100 2x/2=3,100/2 what am I missing 
MATH
I am trying to figure out how to work this problem and need help. Q How many 2X6 pieces of 16 ft x 5 1/2 ins. for a porch that measures 16ft x 14ft? I changed the mixed number to an improper fraction (11/2) and found the area (224). 11/2 x 224/1 
Math
If there is 31days in Janurary, and the first day begin on Thursday. How do I determine four weeks and seven days. Do I count the first three days as week one. Followed with the remaining three weeks. 
quantitative
how long will it take a sum of money to tripple itself at 16%p.a simple interest 
math, Please Helppp!!!!!!!! Lost paper!
I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is the "did you hear about the farmer who fed his cows birdseed.." page) What are the math problems for it?!? 
Math
I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is the "did you hear about the farmer who gave birdseed to his cows..." page) What are the math problems for it? 
Math
If M(t)=29.9t^2+3892, where t=0 represents 1990. How would I describe the transformation of the common function f(t)=t^2. How can I rewrite the function so that t=0 represents 2000. 
literature...
i know that its used to show us how we are connected to him and that we are all one living in the same universe. BUT can you please explain it in a more elaborated way .. thanks 
literature...
Can you tell me the relation between I and You in the first section of Song of Myself... 
literature ...
thank you, i appreciate your answer 
literature ...
i am sorry ... thx for the advice 
english...
can someone please tell me if these answers are right? 
literature ...
1) c 2) c 
literature ...
1) In song of myself number 33 whitman a. refuses ti help the skipper b. is repulsed by the suffering he describes c. take on the suffering of the victims d. ponders matters of life and death 2) Whe the speaker in song of myself, number 33, writes that agonies are "change... 
literature
D. Porphyro's and Madeline's fathers were enemies. 
3rd grade Shurley English
Please help classify each word in the following sentence: Put some cheese slices and bread on your plate. Thanks! 
3rd grade
How do you classify this sentence? (Shurley English) Did Clint's son change the damaged tire on their car? 
Shurley English
I am having a difficult time classifying this sentence: Did Clint's son change the damaged tire on their car? Please help! Thanks! 
1st grade
2+2 4+0 3+1 there is your answer 
Biology HW HELP
why isnt anyone answering??? its not that hard . \wh 
PLEASE HELP. physics
A .25 kg skeet is fired at an angle of 30 degrees to the horizon with a speed of 30 m/s, When it reaches the maximum height, a 15 g pellet hits it from below. Before the collision, the pellet was traveling vertically upward at a speed of 200 m/s Embedded in the skeet, the two ... 
math
The result of reflecting across the line y=x and then rotating 330 degrees counterclockwise around the origin is an isometry T. Represent T by a 2x2 matrix. Could someone explain how to do this? 
8th grade
find the nth term A1=6, d3, n=10 
math
A circular sector of central angle theta and 9 cm radius can be fashioned into a paper cone with volume 100 cm^3. Find all possible values of theta. 
physics. please help!
A 2.5 kg block is pulled to the right by a horizontal string. The coefficient of static friction between the block and the floor is 0.30 and the coefficient of kinetic friction is 0.20. What value of force applied by the string will start the block moving? 
physics
Two cubic blocks are in contact, resting on a frictionless horizontal surface. The block on the left has a mass of mL = 6.70 kg, and the block on the right has a mass of mR = 18.4 kg. A force of magnitude 112 N is applied to the left face of the left block, toward the right ... 
physics!
When empty, a particular helicopter of mass 3770 kg can accelerate straight upward at a maximum acceleration of 1.34 m/s2. A careless crewman overloads the helicopter so that it is just unable to lift off. What is the mass of the cargo? 
chemistry
How much heat is released when a mixture containing 12.6 g CS2 and 12.6 g Cl2 reacts by the following equation? CS2(g) + 3 Cl2(g) → S2Cl2(g) + CCl4(g) ΔH° = −230. kJ 
chemistry
How many grams of oxygen gas are required to produce 7.46 kJ of heat when hydrogen gas burns at constant pressure to produce gaseous water? 2 H2(g) + O2(g) → 2 H2O(g) ΔH = −484 kJ Liquid water has a heat of vaporization of 44.0 kJ per mole at 25°C. 
chemistry
Calculate the heat released when 4.260 L Cl2 with a density of 2.46 g/L at 25°C reacts with an excess of sodium metal to form solid sodium chloride at 25°C. 
chemistry
Ethylene glycol, HOCH2CH2OH, is used as antifreeze. It is produced from ethylene oxide, C2H4O, by the following reaction. C2H4O(g) + H2O(l) → HOCH2CH2OH(l) Use Hess's law to obtain the enthalpy change for this reaction from the following enthalpy changes. 2 C2H4O(g... 
chemistry
A 19.5g sample of a metal was heated to 61.67°C. When the metal was placed into 26.5 g of water in a calorimeter, the temperature of the water increased from 25.00°C to 30.00°C. What is the specific heat of the metal? 
chemistry
thanks :) 
chemistry
Suppose you mix 20.1 g of water at 66.2°C with 44.6 g of water at 35.7°C in an insulated cup. What is the maximum temperature of the solution after mixing? 
chemistry
Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product smells vile. Carbon disulfide is used in the manufacture of rayon and cellophane. The liquid burns as follows. CS2(l) + 3 O2(g) → CO2(g) + 2 SO2(g) Calculate the standard... 
CALC HARD...
2x+2y=430 (x being the diameter and a side; y being another side) That would be your starting equation. I think :) 
chemistry
Hydrogen cyanide is a highly poisonous, volatile liquid. It can be prepared by the following reaction. CH4(g) + NH3(g) → HCN(g) + 3 H2(g) What is the heat of reaction at constant pressure? Use the following thermochemical equations. N2(g) + 3 H2(g) → 2 NH3(g) Δ... 
physics
A person pulls with a force of 40 N on two boxes at rest. The top box is 3.0 kg and the bottom box is 6.0 kg. The coefficient of kinetic friction between the floor and the larger box is .20 and the angle is 30 degrees. a) if the smaller box doesn't slide on top of the ... 
physics
A person pulls with a force of 40 N on two boxes at rest. The top box is 3.0 kg and the bottom box is 6.0 kg. The coefficient of kinetic friction between the floor and the larger box is .20 and the angle is 30 degrees. a) if the smaller box doesn't slide on top of the ... 
physics
A 1.5 kg chunk of ice slides down a roof sloped at a 60 degree angle with the horizontal. If there is no friction, determine the acceleration of the ice. Show that the amount of mass doesn't matter in part a. 
physics
so i won't have a numerical answer? 
physics
sorry, what's mg? 
physics
A water slide can be thought of as being frictionless. Let's say a slider starts from rest and goes down a slide that is 30 m long and is set at a 25 degree incline. a) Determine the speed of the slider at the bottom of the slide. b) Explain why you don't need to know ... 
chemistry
A mixture contained zinc sulfide, ZnS, and lead sulfide, PbS. A sample of the mixture weighing 6.12 g was reacted with an excess of hydrochloric acid. The reactions are given below. ZnS(s) + 2 HCl(aq) → ZnCl2(aq) + H2S(g) PbS(s) + 2 HCl(aq) → PbCl2(aq) + H2S(g) If ... 
chemistry
I keep getting d=0.00441. I'm not sure what I'm doing wrong. My equation with the numbers substituted in looks like this: (0.98421)(0.10853)=d(0.08206)(295.15) 
chemistry
A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0% oxygen, O2 (by mass). What is the density of this mixture at 22°C and 748 mmHg? 
chemistry
what equation would you have to use here? 
chemistry
Raoul Pictet, the Swiss physicist who first liquefied oxygen, attempted to liquefy hydrogen. He heated potassium formate, KCHO2, with KOH in a closed 2.50 L vessel. KCHO2(s) + KOH(s) → K2CO3(s) + H2(g) If 50.1 g of potassium formate reacts in a 2.50L vessel, which was ... 
chemistry
At what temperature does the rms speed of Cl2 molecules equal 401 m/s? 
Economics!
if a business firm operates indefinitely without covering any of its sunk costs,what happens to these costs? A.they continue unpaid for as long as the firm fails to make a profit large enough to cover them B.nothing happens to them;they have cease to exist C.they reduce the ... 
Physics
A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 28.0 m/s. A net is positioned a horizontal distance of 51.0 m from the cannon. At what height above the cannon should the net be placed in order to catch the daredevil? 
chemistry
I got the grams of NO, but how do you do the limiting reagent problem? 
chemistry
Hydrogen cyanide, HCN, can be made by a twostep process. First, ammonia is reacted with O2 to give nitric oxide, NO. 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) Then nitric oxide is reacted with methane, CH4. 2 NO(g) + 2 CH4(g) → 2 HCN(g) + 2 H2O(g) + H2(g) When 25.6 ... 
chemistry
Aluminum metal reacts with iron(III) oxide to produce aluminum oxide and iron metal. (a) How many moles of Fe2O3 are required to completely react with 55 g Al? mol (b) How many moles of Fe are produced by the reaction of 3.00 mol Fe2O3 and 97.7 g Al? mol (c) How many atoms of ... 
chemistry
A 2.9L sample of paint that has a density of 4.65 g/mL is found to contain 26.7 g Pb3N2(s). How many grams of lead were in the paint sample? 
chemistry
I need help with this problem, and it's due tomorrow. 
chemistry
Hydrogen cyanide, HCN, can be made by a twostep process. First, ammonia is reacted with O2 to give nitric oxide, NO. 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) Then nitric oxide is reacted with methane, CH4. 2 NO(g) + 2 CH4(g) → 2 HCN(g) + 2 H2O(g) + H2(g) When 25.6 ... 
science
heat transferses from the sun to the soil in something called radiation.. :) 
english
aww i like it thanks sooo soo soo muchhh!! <3 
english
i need help finding a titale for my essay. it is a personal narrative about my family.. the theme is laughter.. i really need help 
english
JL.. don't be too harsh.. he probably new that :) 
english
hii it should read.. In case you were wondering if I got lost, I reached my destination safely. i hope it works! 
algebra
yupp looks good! 
algebra
samee!!.. but im also taking geometry.. and im studying to become an engineer 
9th grade (Algerbra)
hahaha that's cutee 
Geography
Am in need of writing this research project .So please Help me . 
math
spacial area.I don't get it!!!! 
world history
Why was the Parthenon, Theater of Dionysus, The Temple of Delphi, The Agora, and the Marble Shop important to Ancient Greeks in Athens?