Questions Asked on
March 15, 2015

Physics
You have a solution that contains Ca2+ ions and another that contains Na+ ions. How would adding a solution that contains CO23 ions enable you to tell which is which?
asked by Channing 
physics
A 55 grams copper calorimeter contains an unknown mass of water at 18 degrees celcius. When 755 grams of alloy at 100 degrees celcius is dropped into the calorimeter ,the resulting temperature is 20.4 degrees celcius. Determine the mass of water.
asked by john ralph 
Algebra
Solve for x: (xa)/b +(xb)/a = b/(xa) +a/(xb)
asked by Fred Rand 
Calculus
A conical tank has a height that is always 3 times its radius. If water is leaving the tank at the rate of 50 cubic feet per minute, how fast if the water level falling in feet per minute when the water is 3 feet high? Volume of a cone is V=1/3(pi)r^2h A.
asked by Anonymous 
Chemistry
Ammonium nitrate (NH4NO3) is an important agricultural industrial chemical as it provides readily available nitrogen for plant growth, and one can buy 50. pounds of ammonium nitrate for $38. Urea (CO(NH2)2) is an attractive alternative, and, not being a
asked by Val22 
biology
Hello, I am having trouble with a question on my homework. Even after reading through my notes and textbook I am still not sure what the answer is. I think the answer is the new paramecium is able to reproduce sexually and asexually.Here is the question:
asked by Jordan 
Physcis
You are traeling back and forth on a 10m straight lane. You go forth in 10 sec and back in 4 seconds,forwards again in 5 s and back again in 1 seconds. what is ur displacement. and what is your average speed
asked by Yes 
math
A farmer has 100metres of fencing from which to build a rectangular chicken run. He intends to use two adjancent walls for two sides of the rectangular enclosure. Determine a formular for the enclosed area in terms of X?
asked by Anonymous 
computer studies
Explain modelling molecules..please?
asked by shane 
science
What is the mass of air in a room meauring 30 cubic meters if the density of air is 1.3kg per cubic meter?
asked by shane 
GEOMETRY
Two circles with radii a and b touch each other externally . Let c be the radius of a circle which touches these two circles as well as their common tangent to the two circles . Then relate a,b and c through an equation
asked by PRANAV 
Algebra
Please check my answer and let me know if it is right or not. 25+.32m(800)=281 28+.30(400)=148 70+40+2(30+.29)=830 +.29m
asked by Jennifer 
PHYSICS
The gravitational forces of the Earth and the Moon are attractive, so there must be a point on a line joining their centers where the gravitational forces on an object cancel. How far is this distance from the Earth's center?
asked by Physics 
Social study
how can we find place on a map
asked by Noor 
chemistry
CaSiO3(s) +6 HF (g)> CaF2(aq) + SiF4 (g) + 3 H2O(l) If a 65.6 g sample of CaSiO3 is reacted in an inert 83 L container at 25.5°C with HF at 1.00 atm pressure find the following. a. the mass of water, and CaF2 produced in the reaction and the mass of HF
asked by Val22 
History
What is the difference between little p Progressivism and big P progressivism?
asked by TayB 
physics 10
1.) 100 kJ of heat is added to 600g of zinc at 20 C and 75g of it melts. If the specific heat of zinc is 0.385 kJ/kgC and it melts at 420 C. What is its heat of fusion? 2.) If all the heat lost by 1kg of water at 0 C when it turns into ice at 0 C could be
asked by ella 
Maths
In a class of 39 pupils, 1/4 of the girls wear spectacles and 2/3 of the boys wear spectacles. A total of 16 pupils in the class wear spectacles. How many girls do not wear spectacles? Answer preferably in model method please.
asked by Vincent 
english
'to claim exemption' means? I think it means to ask for or to claim for privilege Am i right?
asked by zoha 
Calculus
If the limit as x approaches infinity (6x^2/2004xkx^2)=1/2, then k= A. 3 B. 3 C. 12 D. 12 E. 3
asked by Anonymous 
Calculus
If y=3x7, x is greater than 0, what is the minimum product of x^2y? A. 5.646 B. 0 C. 1.556 D. 2.813 E. 4.841
asked by Anonymous 
math
In a class of 30 students,18 study Geography 3 take neither a) Display this information in a venn Diagram?
asked by Larivita John 
Account
Howie Stars produces starts for elementary teachers to reward their students. Howie Stars' trial balance on June 1 follows "HOWIE STARS Trial Balance June 1, 2012" Balance Account Title Debit Credit Cash $14,000 Accounts receivable 155,000 Inventories:
asked by Shraddhya Dubey 
Maths
There are 50 students in a class of which 40 are boys and the rest are girls the average weight of the class is 44kg and the averageweight of the girls us 40kg. find the average wieght of the boys
asked by priya 
Science
A dicot seed is preferred over a monocot seed to observe seed structure because? a.Distinct embryonic axis or b.Proper sepration of cotyldeons
asked by Mona 
math
If the point (a,0) and (0,b) and (1,1) lie on the same line, prove that 1/a + 1/b=1
asked by saurav 
physics
The system is frictionless and the trolley accelerates to the left at 3m/s squared. (a) calculate the unknown mass M. (b) calculate the magnitude of the forces in each string.
asked by kulani 
Physics
Two horizontal forces Upper F1 Baseline and F2 act on a 3.6 kg disk that slides over frictionless ice, on which an xy coordinate system is laid out. Force F1 is in the positive x direction and has a magnitude of 7.1 N. Force F2 has a magnitude of 9.3 N.
asked by patrick 
math
p and q are two points on the line x  y + 1 = 0 such that each of them is 5 units far from the origin. Find the coordinates of the points
asked by saurav 
Calculus
Given the function f(x)= sqrtx a) Let M= f´´(50) and N=f''(49). Argue on that f´´(x) lies between M og N if x =]49,50[ (Tip: show that f´´(x) is increasing function, that is look at f´´´(x)). b) Use the numbers from parta a) and define K as the
asked by Calculus 
History
What is the difference between little p Progressivism and big P progressivism?
asked by Tay B 
maths
an equilateral triangle is inscribed in a circle of radius 40cm. what is the length of the sides of the triangle
asked by neevetha 
Math  Equations
Just learned equations and want to know if i am doing write.. 4y= 2x2 2y=2x6 ans (7,4) x+2y=7 3x2y= 11
asked by Marie 
Calculus
The integral of sqrt(x)(sqrt(x)+1) dx A. 2(x^3/2+x)+c B. x^2/2+x+c C. 1/2(sqrt(x)+1)^2+c D. x^2/2+2x^3/2/3+c E. x+2sqrt(x)+c
asked by Anonymous 
MATH EQUATIONS
Just learned equations and want to know if i am doing right 4 problems. 4y= 2x2 2y=2x6 ans (7,4) x+2y=7 3x2y= 11 ans (1,4) 4x3y= 20 5x7y= 64 ans (4,12) 2x5y=1 3x+2y=8 ans (2,1)
asked by Marie 
Calculus
If f(x) is a continuous function with f"(x)=5x^2(2x1)^2(3x+1)^3 , find the set of values for x for which f(x) has an inflection point. A. {0,1/3,1/2} B. {1/3,1/2} C. {1/3} D. {1/2} E. No inflection points
asked by Anonymous 
Calculus check
Find the equation of the line tangent to y=tan2x at x=pi/8 A. y1=sqrt(2)(xpi/8) B. y1=1/2(xpi/8) C. y1=1/4(xpi/8) D. y1=2(xpi/8) E. y1=4(xpi/8) I got A
asked by Sarah 
Chem
Silver nitrate and aluminum chloride react with each other by exchanging anions as shown below. 3 AgNO3 (aq)+ AlCl3 (aq) → Al(NO3)3 (aq) + 3 AgCl (s) How many moles of AgCl is produced when 1 mol of AgNO3 reacts with 1 mol of AlCl3?
asked by Anonymous 
12th Grade
What career can I study if I am doing this subject: Mathamatical literacy ,Accounting , Economics And Business studies anyone who can help?
asked by matshidiso 
science
Describe what happens to the electricity produced at 25kV by a power station when its transmitted to a house at 230 V many miles away.
asked by sabrina 
World history
"It was a town of red brick, or of brick that would have been red if the smoke and ashes had allowed it; but as matters stood, it was a town of unnatural red and black like the painted face of a savage. It was a town of machinery and tall chimneys, out of
asked by Anonymous 
physics
A 450 kg car traveling north at 30 m/s collides with a 560 kg car traveling west at 35 m/s. If after the collision they become entangled and move off together, (a) what is magnitude of the final momentum of the cars? (b) What is their final speed of the
asked by John 
English help
In Star Wars: a new hope when did a fatherson(uncle) experience separation?
asked by Anonymous 
math
The concentration (in milligrams per liter) of an antibiotic in the blood is given by the geometric series A + Aekt + Ae2kt + + Ae(n − 1)kt where A is the number of milligrams in one dose of the antibiotic, n is the number of doses, t is the time between
asked by Alexis 
Probation and Parole
2) According to psychoanalytic theory: A. behavior is the result of operant conditioning. B. crime is the result of positive reinforcement. C. conscious behavior is the result of unconscious thought. D. all of the above I'm stuck and need help!!! I believe
asked by breeamberr 
Science Help
A projectile is launched at 15 degrees and it's landing height is the same as the launch position. If this is true, then at what other angle can the projectile be launch to achieve the same horizontal displacement?
asked by Steffi 
chemistry
CaSiO3(s) +6 HF (g)> CaF2(aq) + SiF4 (g) + 3 H2O(l) If a 65.6 g sample of CaSiO3 is reacted in an inert 83 L container at 25.5°C with HF at 1.00 atm pressure find the following. a. the mass of water, and CaF2 produced in the reaction and the mass of HF
asked by joe 
math
from the top of a light house 40 m above the water the angle of depression of a small boat is 60 degree .find how far the boat is from the base of the light house
asked by shaikha 
math
area of a sector of a circle of radius 36 cm is 54 pie cm square . find the length of the corresponding arc of the sector
asked by shaikha 
Please check my Calculus
f(x)=x^n , where n is a positive integer greater or equal to 2. The graph of f(x) will have an inflection point when n is A. Even B. Odd C. Divisible by 3 D. For all values E. For no values I got B.
asked by Anonymous 
Chemistry
What will happen to the number of moles of SO3 in equilibrium with SO2 and O2 in the following reaction in each of the following cases? 2 SO3(g) equilibrium reaction arrow 2 SO2(g) + O2(g) ΔH° = 197 kJ (a) Oxygen gas is removed. increase decrease stay
asked by Sally 
Biuret & Lowry Method
Hello I want to ask several questions about Lowry and Biuret method. 1. Lowry Reagent C are prepared freshly. Why? 2. Why Folin Reagent kept in dark bottle? 3. Order of addition of reagent is important for preparing Lowry Reagent C. Why? 4. We prepare
asked by Angora 
algebra
if x =3x then evaluate 8x squared +4x
asked by tlhompo 
physics electromagnetism
Two long parallel vertical wires 0.3m apart are. ' placed eastwest of one another. The current in the westerly wire is 30A and on the other 20A. The horizontal component of the earths magnetic flux density is 2*10^5. Find the force per unit length on
asked by pascal 
Calculus
If f'(x)=sinx and f(pi)=3, then f(x)= A. Cosx+4 B. Cosx+3 C. cosx+2 D. cosx2 E. cosx+4
asked by Anonymous 
calculus
What is the limit, as x approaches 1, of (sqrt(x)  1)/(x  1)? I need to show work, but I know the answer is 3/2, because I confirmed with a TI89.
asked by John 
Calculus check
The limit as x approaches 1 (x^31)/(x^21) is I got 3/2
asked by Sarah 
physics/chem
Okay so I want to solve for refractive index. I'm given the dielectric constant and the permeability M. From what I understand the refractive index is frequency dependent. I'm just unsure what equation to use. n=(Er)^1/2 does not work because the
asked by Zed 
English Literature
I read William G Mcloughlin's essay "Pietism and the American Character" and I didn t understand anything I need a brief summary of the main ideas
asked by John 
Calculus
Let f be a function such that the limit as h approaches 0 [(f(5+h)f(5))/h]=4. Which of the following must be true? I. f(5)=4 II. f'(5)=4 III. f is continuous at x=5 A. I only B. II only C. III only D. I and II only E. II and III only
asked by Anonymous 
Calculus check
The smallest slope of f(x)=6x^2x^3 for 0 is less than or equal to x is less than or equal to 6 occurs at x= A. 0 B. 2 C. 3 D. 4 E. 6 I got E
asked by Sarah 
biochem
How would I calculate blood glucose levels if using standard curve ...and I have three samples and their absorbence at 420 nm.
asked by em 
Language arts
What's third person point of view?
asked by My name :) 
Calculus check
An equation of the line tangent to y=sinx+2cosx at (pi/2, 1) is A. 2xy=pi1 B. 2x+y=pi+1 C. 2x2y=2pi D. 4x+2y=2pi I got A
asked by Sarah 
science
air masses that form over land are moist true or false
asked by rezene 
Calculus
For f(x)=x^2/3(x^24) on [2,2] the "c" value that satisfies the Rolle's Theorem is A. 0 B. 2 C. +or2 D. There is no value for c because f(0) does not exist E. There is no value for c because f(x) is not differentiable on (2,2)
asked by Anonymous 
calculus
The graph of the function y=x^5x^2+sinx has a point of inflection at x= a. 0.324 b. 0.499 c. 0.506 d. 0.611 e. 0.704 Thanks.
asked by John 
math
Two cylindrical containers are similar. The larger one has internal cross section area of 45cm^2 and can hold 0.945 litres of liquid when full. The smaller container has internal cross section area of 20cm^2. (a) Calculate the capacity of the smaller
asked by kudu 
AP CALC
1. Let f be a twicedifferentiable function such that f (2) = 8 and f (4) = 5. Which of the following must be true for the function f on the interval 2 ≤ x ≤ 4. I. The average value of f is 6.5 II. The average rate of change of f is 1.5 III. The
asked by Rachel 
Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 108 M. What is the pH at the equivalence point? I used the HH formula and got pH=7.52+log(.222)=6.87, but its not right.
asked by JUNDY 
chemistry
An aqueous solution contains 64g of ethanol( C2H5OH) in 122 grams of solution. The mole fraction of ethanol is:
asked by anon 
Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 108 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.
asked by JUNDY 
math
A cord AB of length 4cm divides a circle of radius 3.3cm into two segments.find the area of each segment.
asked by michelle 
Calculus check
Given f(x)=x^4(2x^215). On what interval(s) is the graph of f concave upwards? A. (0, sqrt(3)) B. (sqrt(3), 0) C. (sqrt(3), 0) and (0, sqrt(3)) D. (sqrt(3), sqrt(3)) E. (Negative infinity, sqrt(3)) and (sqrt(3), infinity) I got E
asked by Sarah 
math
An arc AB of length 5cm is marked an a circle of radius 3cm. Find the area of the sector bounded by this arc and the radii from A and B.
asked by michelle 
Please check my calculus
If x^2+xyy=2, find dy/dx My answer: (2x+y)/(1x)
asked by Anonymous 
math
Asha, Nangila and Cherop contributed shilling 60,000,shilling 85,000 and shilling 105 000 respectively. They agreed to put 25% of the profit back into business each year. They also agreed to put aside 40% of the remaining profit to cater for taxes and
asked by kudu 
math
A square brass plate is 2 mm thick and has a mass of 1.05 kg. The density of the brass is 8.4 g/cm3. Calculate the length of the plate in centimeters.
asked by kudu 
accounting
A compound transaction was recorded as follows: debit Equipment, $5,000; debit Cash, $1500; credit Accounts Payable, $3,500. This error would cause __________. A. assets to be overstated B. assets to be understated C. liabilities to be overstated D.
asked by Josh 
Math
If the standard error of measurement is 3, and a person scores 125, Standard error of measurement with one standard deviation would put the score at ____?
asked by Bill 
Financial
If a corporation pays a dividend, which group receives priority in receiving the dividend? bond holders holders of common stock holders of preferred stock dividends are evenly divided by holders of common and preferred stock
asked by Saline 
Physics
An F18 with a weight of 22500 lbs lands on a carrier with a speed of 120 mph. If the runout of the arresting cable is 160 ft, what is the planes acceleration in feet per second squared?
asked by Jim 
precal
demoivre theorem (2sqrt3+2i)^5 r=(2sqrt3+2)^2
asked by LK 
physics
At the beginning of a new school term, a student moves a box of books by attaching a rope to the box and pulling with a force of F = 88.9 N at an angle of 56◦ , as shown in the figure. The acceleration of gravity is 9.8 m/s 2 . The box of books has a
asked by Liz 
Calculus check
Let f(x) be a polynomial function such that f(3)=3, f'(3)=0 and f"(3)=3. What is the point (3,3) on the graph y=f(x)? A. Relative maximum B. Relative minimum C. Intercept D. Inflection point E. None of these I got C
asked by Sarah 
chemistry
H2(g)+ o2(g)> H20(l) (delta)Hf(h20(l)=286 kj/mol the total volume of hydrogen needed fill the hindenberg was 2.3 x 15^5 m^3. what is the theoretical yield of heat (that which could have been evolved) when the hindenberg exploded, assuming all the
asked by Jack 
chemistry
Suppose a reaction has the equilibrium constant K = 2.3 107 at a particular temperature. Will there be a large or small amount of unreacted starting material present when this reaction reaches equilibrium? a)There will be a small amount of unreacted
asked by andy 
Math
Which of the following is true about a trend line for data? A. The minimum data point always lies on the trend line. B. Every data point must lie on the trend line. C. The trend line describes the pattern in the data if one exits. D. The trend line
asked by Anonymous 
precal
sqrt2/2^2
asked by LK 
math
A cell phone company charges by the minute (and partial minute) for a phone call. Arionna’s plan includes 300 minutes in the $20 base cost. If she uses more than 300 minutes, there is a $5 overage fee and an additional charge of $0.25 per minute. Which
asked by Anonymous 
FINANCE
Below is a list of account balances for Currie Hospital as of December 31, 2013. Prepare a balance sheet as of December 31, 2013, in proper form. (Hint: You will need to compute the net assets account. Assume that all net assets at the beginning of the
asked by JON 
Math Geometry  Please check my answers!
There's a line graph with 3 dolphins (it's the same dolphin at different spot of the jump) jumping out of the water and landing (they formed a parabola). The Yaxis represents Height in feet and the Xaxis represents Time in Seconds. The points are (10,0),
asked by Lilly 
chem
Calculate glucose levels using standard curve when you have absorbence for sample
asked by em 
SPanish
In the spaces provided, write the vocabulary expression that could replace the underlined words in each sentence without significantly changing the meaning of the sentence. Do not use any of the underlined words again. ¿Viste el artículo en el periódico
asked by Ciaria 
chemistry
a) calculate the concentration of your unknown (Gatorade) using correct units Note if you did not run the Gatorade use absorbance =0.205 abs units in order to calculate the concentration of the dye in the Gatorade b) calculate of % T for an absorbance of
asked by mathew 
precal
demoivre theorem (22i)^8
asked by LK 
Physic
1. Evaluate dF/dr when r=10,000, given that F= GmM/(r^2) and that F decreases by 3N/m when r=20,000. 2. The lowest point of a 5 meter long ladder is pulled away from a wall at 0.3 meters/sec. Find the rate at which the angle between the ladder and the wall
asked by Anonymous 
Calc
Find the derivative of: 1. Xlog base e (log base e X) 2. log base x 7 3. (sinh x)^2  (cosh x)^2
asked by Anonymous 
math
Two cylindrical containers are similar. The larger one has internal cross section area of 45cm^2 and can hold 0.945 litres of liquid when full. The smaller container has internal cross section area of 20cm^2. (a) Calculate the capacity of the smaller
asked by kudu 
calculus
1.) Find the derivative of ((x + 3)/e^x) ^ (Log e X) 2.) T/F (log e X)' = (log e x)' 3.) T/F (Log e 7x)' = (log e x)' 4.) Find the derivative of e^(log e 7x)
asked by Alex 
math
How do I write one equations in slopeintercept form, and three other lines in slopeintercept form that are perpendicular to the first line ?? Please Help, Thank you =)
asked by may 
Algebra
If an angle, x, is in standard position, and P(3, 4) is a point on the terminal side of the angle, what is the value of sin x?
asked by Jack 
calculus check
If siny=cosx, then find dy/dx at the point (pi/2, pi) A. 1 B. 0 C. 1 D. pi/2 E. None of these I got C
asked by Sarah 
algebra
Yoko runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 20 minutes?
asked by kay 
Please check my calculus
A conical tank has a height that is always 3 times its radius. If water is leaving the tank at the rate of 50 cubic feet per minute, how fast if the water level falling in feet per minute when the water is 3 feet high? Volume of a cone is V=1/3(pi)r^2h A.
asked by Anonymous 
physics/chemistry
Okay so I want to solve for refractive index. I'm given the dielectric constant and the permeability M. From what I understand the refractive index is frequency dependent. I'm just unsure what equation to use. n=(Er)^1/2 does not work because the
asked by Zed 
math
18 students in the class play baseball.17 students play basketball. 30 students play either or both. select the venn diagram that shows the number who play baseball and basketball?
asked by karia 
Programming in Java
Write a program to calculate adjacent and opposite of a triangle. My code can calculate hypotenuse but won't calculate opposite and adjacent.
asked by Excel 
math
A straight line passes through the point (1,2) and its distance from the origin is 1 unit. Find the equation
asked by saurav 
Algebra
Name the property of real numbers illustrated by the equation. 4(x + 3) = 4x  12 A. Associative Property of Multiplication B. Associative Property of Addition C. Distributive Property D. Commutative Property of Addition B or A ? I think its B
asked by Ciaria 
Calculus check
A function f(x) is continuous for all x and has a local minimum at (1,8). Which must be true? A. f'(1)=0 B. f' exists at x=1 C. The graph is concave up at x=1 D. f'(x) is less than 0 if x is less than 1, f'(x) is greater than 0 if x is greater than 1 E.
asked by Anonymous 
english
how to unscramble letters to find name of country : 1. NLCIGSAD 2. NNSHOADE
asked by danesh 
Calculus
For how many values of x will the tangent lines to y=4sinx and y=x^2/2 be parallel? A. 0 B. 1 C. 3 D. 4 E. Infinite Thanks.
asked by Anonymous 
physics
Calculate the gauge pressure inside a soap bubble 0.0002m in radius using the surface tension for soapy water
asked by Boyd 
English
1. There were 40 seats for older children in the front and benches for little children at the back. 2. There were 40 seats for older children at the front and benches for little children in the back.  Which preposition
asked by rfvv 
English
1. I'm very happy because I can go to school and study now. 2. I'm very happy that I can go to school and study now. 3. I'm very happy I can go to school and study now.  Are both the same in meaning? Which one is popular, 'because' or 'that'?
asked by rfvv 
Algebra
Is the inequality below sometimes, always, or never true? 2(2x + 9) > 4x + 9 A. always B. sometimes C. never C ?
asked by Ciaria 
Calculus 2 Trigonometric Substitution
I'm working this problem: ∫ [1tan^2 (x)] / [sec^2 (x)] dx ∫(1/secx)[(sin^2x/cos^2x)/(1/cosx) ∫cosxsinx(sinx/cosx) ∫cosx∫sin^2(x)/cosx sinx∫(1cos^2(x))/cosx sinx∫(1/cosx)cosx sinx∫secx∫cosx sinxsinx∫secx =ln secxtanx+C Can
asked by Janice 
MATH
Suppose that 3% of all adults suffer from diabetes and that 29% of all adults are obese. Suppose also that 2% of all adults both are obese and suffer from diabetes. (a)Find the probability that a randomly chosen adult is obese, given that he or she suffers
asked by Anonymous 
math
Two towns P and Q are 400 km apart. A bus left for P and Q. It stopped at Q for one hour and then started the return to P. one hour after the departure of the bus from P, a trail also heading for Q left P. the trailer met the returning bus ¾ of the way
asked by kudu 
Algebra
the perimeter of a rectangle is 62 m. The length is four more than two times the width. What is the length?
asked by Nicko 
chemistry
hi I have a hard time understanding the following question: The
asked by juju 
Chemistry
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 70 mL of the concentrated HCl, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the
asked by JUNDY 
math
In the year 2003, the population of a certain district was 1.8 million. Thirty percent of the population was in the age group 1540 years. In the same year, 120,000 people in the district the Voluntary Counseling and Testing (VCT) contra for an HIV test.
asked by kudu 
Early Childhood Education
Lesson Plan for 3 year olds: See If I am doing it correctly. Goal: To teach how to recognize the first and last letter of their names. Objective: The children will identify and name the first and last letter of their names. Standards Include: Georgia Early
asked by Barbara 
math
David bought a new car for shilling 800,000. After 5 years, he sold it through a secondhand car dealer. The dealer charged a commission of 4% for the sale of the car. If David received shilling 480,000, calculate the annual rate of depreciation of the
asked by kudu 
Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 108 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.
asked by JUNDY 
Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 108 M. What is the pH at the equivalence point? I used the HH formula and got pH=7.52+log(.222)=6.87, but its not right.
asked by JUNDY 
Algebra
1. Solve log(4/x) (x^2  6) = 2. (note: the (4/x) is underscored) 2. Show that loga [(x + {sqrtx^25}) / 5] = loga (x  (sqrtx^25))
asked by Lily 
precal
how do you use demoivre theorem for (1+i)^7
asked by LK 
Math
Name all the quadrilaterals that have two pairs of parallel sides and all angles congruent
asked by Darion 
1 History Question
How did the War Production Board play a role in coordinating American war efforts during World War II? It was the government agency that worked with corporations to produce what the military needed. It was the agency that determined when and where troops
asked by Lia 
trig
A gear with a radius of 32 centimeters is turning at pi/9 radians/sec. What is the linear speed (velocity) at a point on the outer edge of the gear?
asked by Chris 
math
The apocalypse started in NY where 100 people were infected. From there the zombie apocalypse continued to spread. After 17 minutes the number of people infected 200 people.assume that no human have figured out how to kill the zombie or stop it from
asked by tony 
Statistics
in 2000, the averages change of tax preparation was $95. Assuming a normal distribution and a standard deviation of $10. What proportion of tax preparation fees were more than $95.
asked by Leo Elvis 
LAST history question
Why did the US government require rationing of some goods during World War 2? A. to provide food and supplies to war refugees in Europe B. to increase the demand for certain items to increase the profit made by selling them around the world C. to decrease
asked by Lia 
Statistics
the age of costumers for a particular retail store follows a normal distribution with a mean of 37.5 years and a standard deviation of 7.6 years. what is the probability that the next costumer who enters the store will be less than 42 years old?
asked by Leo Elvis 
math
write an equation of a circle with the given center and radius. center (–7 –3) and radius 13
asked by jay 
Dynamics
an 800 lb cannon fires a 5 lb cannonball in a horizontal direction. the cannon sits on a skid; the kinetic coefficient of friction between the skid and the horizontal surface is .25. if the cannonball has a speed of 650 ft/s when it leaves the cannon,
asked by Matt 
business math 2
If the demand equation for a particular commodity is y=285x, where y is the unit price in pesos and x is the quantity in units, find the total revenue function and marginal revenue function.
asked by zela 
chemistry
The power of the equation ΔG° = –RT ln(K) is that K can be determined from tabulated values of ΔG°f. Use the tabulated values of the Gibb's energy to determine K for the reaction, 2AB(l) ↔ 2A(g) + B2(g), at 298K. (R=8.314 J/K mol or R=0.008314 kJ/K
asked by Carl 
business math
marylin was supposed to pay $1460 to Bernice by March 2. Some time later Marylin paid Bernice an equivalent of $1552.84, allowing for a time value of money of 3.9% compounded monthly. When did marylin make the payment?
asked by Ify 
chemistry
Calculate how many grams of O2(g) can be produced from heating 31.8 grams of KClO3(s).
asked by 7 
algebra
Evaluate the expression for the given value of the variable(s). x2  4x; x = –3 A. –17 B. 11 C. –1 D. 3 d ?
asked by Ciaria 
life orientation
compare in five ways the similaritie and differences between nfsas and other student loans.
asked by nicholl 
algebra
Insert , or = to make the sentence true. SQR3 SQR7 A. > B. < C. = C?
asked by Ciaria 
Statistics
The time it takes a technician to fix a computer problem is exponentially distributed with a mean of 15 minutes. what is the probability that a). it will take a technician less than 10 minutes to fix a computer problem? b) it will take a technician between
asked by Leo Elvis 
algbera
What is the corresponding temp in 77 degrees Fahrenheit to degrees celsio us
asked by Anonymous 
life orientation
compare in five ways the similaritie and differences between nfsas and other loans.
asked by nicholl 
math
Samantha has five objects weighing 1kg,2kg,3kg,4kg and 5kg. If she weighs them two at a time, how many different weighs can she get?
asked by karen 
life orientatiton
three disadvantages for student to student to study at the institution of higher education through nfsas
asked by nicholl 
life orientation
the similarities and differences between funza lushaka and nfsas
asked by nicholl