Questions Asked on
April 19, 2012

maths
1 + 1/4 + (1.3)/(4.8) + (1.3.5)/(4.8.12)+...... = _____
asked by its urgent!!!!!!!!!! 
Chemistry
Which atom has the smallest valence p atomic orbital? Carbon Nitrogen Sulfur Why? A. That atom has the highest electronegativity. B. That atom has the fewest number of electrons. C. That atom does not have electrons in p orbitals. D. The valence
asked by Pooya 
Physics
On a frictionless, horizontal air track, a glider oscillates at the end of an ideal spring of force constant 2.30 N/cm. The graph in the figure shows the acceleration of the glider as a function of time. Find the mass of the glider. Find the maximum
asked by Joe 
political science
When membership in an organization allows for a reductions in the price of museum tickets, it is called a a) purposive benefit b) bribe c) promotion offer d) material benefit e) solidary benefit
asked by tina 
physics
If 1g of steam is mixed wid 1g of ice, then what will be the resultant temperature of the mixture?
asked by its urgent!!!!!!!! 
Physics
an electron in a mercury atom jumps from level a to level g by absorbing a single photon. determine the energy of the photon in joules.
asked by Marty 
physics
The coefficient of friction between the block of mass m1 = 3.00 kg and the surface in the figure below is ìk = 0.365. The system starts from rest. What is the speed of the ball of mass m2 = 5.00 kg when it has fallen a distance h = 1.90 m?
asked by zamdirhy 
Trig
sin^4tcos^4t/sin^2t cos^2t= sec^2tcsc^2t i have =(sin^2t+cos^2t)(sin^2t+cos^2t)/sin^2tcos^2t then do i go =(sin^2t+cos^2t)/sin^2tcos^2t stumped
asked by Josh 
physics
In periods of peak demand, power companies lower their voltage. This saves them power (and saves you money!). To see the effect, consider a 1200 W coffeemaker that draws 10 A when connected to 120 V. Suppose the voltage is lowered by 13 % to 104
asked by Kristie 
PreCalc Help!!!!!!!!
1+sin2x/sin2x=1+1/2(secx)(cscx)
asked by Amanda 
physics
A piece of metal at 80 degrees celsius is placed in 1.2 L of water at 72 degrees celsius. The system is thermally isolated and reaches a final temperature of 75 degrees celsius. Estimate the approximate change in entrophy for this process.
asked by William 
math
Area A sequence of smaller squares is formed by connecting the midpoints of the sides of a larger square. (a) If the area of the largest square is 1 square unit, determine the first five terms of a sequence that describes the area of each successive
asked by nick 
physics
An open container holds ice of mass 0.540 kg at a temperature of 18.7 c The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 790 J/minute. The specific heat of ice to is 2100 J/kg . K and the heat of fusion
asked by I 
PreCalc Help!!!!!!!!
cos(2tan^1(15/8))
asked by Amanda 
Chemistry
Deriving Chem Beer's Law's Equation By comparing the absorbance of each trial solution, Aeq, to the absorbance of the standard solution, Astd, [FeNCS2+]eq can be determined. Two Beer’s Law equations can be written, one for the trial (Aeq =
asked by Raskin 
science
Which of the following statements is not correct about reference frames?
asked by pachi 
math
tom had 8 pieces of pizza, tom ate one. How much is left
asked by bob 
5th grade math
A group of students went to their favorite restaurant after the football game one Friday night. They all ordered from the menu and forgot to tell the server to give them separate checks. The bill totaled $27, including the tip. They decided to split the
asked by Leann 
math
The total hang time T in seconds, is given by T(h)=^h/2. Where h is the maximum height. If a person jumps 6 ft off the ground, determine for how many seconds the person is in the air.
asked by angel 
Statistics
12. The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 94% of students now own a cell phone. Twenty five students are to be selected
asked by Rodney 
Mathematics
water is poured into a cylindrical bucket with the base area of 300cm squared if 4.8 leters of water is poured into the bucket what is the height if the water in the bucket
asked by Kalene 
History
European immigration in the 19th century was lower in South Carolina than it was in many other areas because the state what ?
asked by Asia 
A level, Mechanics
An object of mass 100 kg is suspended by two identical cables. The tension in cable one is (400i + 300j)N, where i and j are horizontal and vertical unit vectors respectively. The tension in cable two is (pi + qj)N. If the object remain at rest, find p and
asked by Tony 
Grade 12 life orientation
Hiv/Aids describe the life style disease/behaviour and explain 5 factors that contribute to the disease
asked by Tebogo 
Math
A pizza is cut into 10 equal slices. What is the measure of each central angle (the part first eaten)?
asked by This Guy 
Accounting
Please prepare the following journal entries. Indicate which account should be debited and which account should be credited along with the dollar amount of the debit and credit. a) Investors invested $100,000 in exchange for 10,000 shares of common stock.
asked by Anne 
political science
when paid staff conduct most of the daily business of a group, that group is best described as a a) PAC b) freerider group c) 527 committee d) staff organization e) lobbyist
asked by tina 
physis
A parallel plate condenser with oil between the plates( dielectric const. of oil K=2) has a capacitance C . if the oil is removed then what will be the capacitance of the capacitor?
asked by its urgent!!!!!!!! 
history
How was the civil rights movement of the 1950s and 1960s a continuation of the Reconstructionera struggle for blacks to achieve equality?
asked by Brittney 
3 grade english ms sue
ADJECTIVES AND ARTICALES DIRECTIONS CIRCLE EACH ARTICAL. UNDERLINE EACH ADJECTIVE 1PEOPLE HAVE WORN MANY DIFFERENT STYLES THROUGHOUT THE YEARS. MY SON CIRCLE THE WORD (THE) AND UNDERLINE THE WORD IS (different) 2When Aunt Rose was a teacher,she wore
asked by dw 
Physics
A reversible engine converts 1/6 of the heat input into work. When the temperature of the sink is reduced by 62C, the efficiency of the engine is doubled.What are the temperarure of the source and sink?
asked by Tulika 
chemistry
What is the percent yield if 23.5 of ethyl chloride is actually formed?
asked by Anonymous 
science
An aluminum bar is 2m long at a temperature of 20 degrees C What will be the length of the bar at a temperature of 100 degrees C
asked by jack 
Chemistry(Please respond)
Step 1:H2O2 + I^^ = H2O + OI^^ step 2: H2O2 + OI^^ = H2O + O2 + I^^ What is the equation for the overall reaction? I am not sure how to do this since there are two equations. Complete the rate law for the overall reaction. I know how to do this one but
asked by Hannah 
Grade 12 life orientation
Hiv/Aids describe the life style disease/behaviour and explain 5 factors that contribute to the disease
asked by Tebogo 
physics
A wire of diameter 0.65mm and length 6.0m stretches 10mm when 5.5kg is hung from it. What is the Young's modulus for the wire and what is the effective spring constant for the stretching wire
asked by Kirk 
Physics
Sodium has bcc packing. If a distance between two nearest atoms is 3.7 A* then what is the lattice parameter?
asked by Tulika 
Algebra
A jacket priced at $65 is on sale at %20 off the original price. The sale price is then marked down another %30 off. What is the price of the jacket?
asked by Ashly 
Maths
what is the equation for the tangent to the curve 6y=7x^3 at (1,1)?
asked by its urgent!!!!!!!!!! 
math
Is each question biased or faired? 6. Will you vote for the young inexperienced candidate, Mr. Soong, or the experienced candidate, Ms. Lopez? (1 point) biased fair 7. Will you vote for Mr. Soong or Ms. Lopez? (1 point) biased fair
asked by jman 
math
Shop A sold a notebook for $1200. This was 125% of the price of a similar notebook sold in Shop B. Find the price of the notebook in Shop B. During a sale, both shops gave the same percentage of discount. Dennis bought the notebook from Shop B and found
asked by Al 
Algebra
What are variables ?
asked by Ashly 
physics
both chloroplasts and mitochondria are like in that they both have_______ membranes and their own _____.
asked by chita 
GRAMMAR
WHAT IS THE ADJECTIVE AND NOUN IN THE SENTENCE: THREE GUESTS BRING GUITARS. Thank you Daniel
asked by DANIEL 
math
A jar consists of 21 sweets, 12 are green and 9 are blue. William picked 2 sweets at random. Find the probability that both sweets are blue.
asked by jenny 
chem
How many molecules are in 1.60 g of SO2? Answer in units of molec
asked by luke 
chemistry
Benzene has the empirical formula CH and an experimental molar mass of 78 g/mol. What is its molecular formula? Explain how you got your answer.
asked by Brittney 
history
Describe President Reagan’s foreign policy goals and summarize several of the major, specific actions he took to meet those goals.
asked by Brittney 
chemistry
(1) How many grams of copper, cu are there in 2.55 mol of cu? (2) Determine the percent composition of each of the following (a) ethylalcohol CH3CH2OH. (b) vitamin C, ascorbic acid C6H8O6. (c) Coteine, C18H21NO3. (3) A 27.5g sample of a compound containing
asked by frank fred 
history
How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism?
asked by Brittney 
Mathematics
a bus travelled at at average speed of 54km/hour from lape town to cape town calculate in km the distance from lape to cape town
asked by Sam 
science
what are the different methods of helping people to hear again if they have something wrong with the cochlea, eardrum and ear canal.
asked by Anonymous 
Math
10a^3b, 8a^2 b^2, and 22ab^3 can someone please help me with this my kid needs help and i don't know how to do it
asked by Abby 
Trig/Precalc
solve 6=e^0.2t Round your answer to the nearest hundredth Someone please help me  I don't understand this problem at all!
asked by tabby 
math
For the number 385,4012, and 856 first round each number to the nearest hundred. Then add the rounded numbers
asked by keshia 
science
what is the word for high energy body on outer edge of space
asked by Kandy 
Maths
1 + 1/4 + (1.3)/(4.8) + (1.3.5.) + .... = _________
asked by Tulika 
grammar
can you check these for me ? circle the action word that tells more. 1. Lee grabbed a bucket of paint options: got or grabbed 2.The paint slipped . options: slipped or fell 3. It dripped on Lee's coat, options: went or dripped 4. It sprayed on Lee's pants.
asked by kevin 
microbiology
what is sugar fermentation
asked by denis 
Maths
watz the value of (sin 5A)/(sin A)?
asked by Tulika 
biology
how could you set up an experiment to show that the oxygen is coming from the plant and not from the water???
asked by chantelle 
Math Help Please!!!!
find the balance after 15 years of a $2500 investment earning 5.5% interest compounded continuously
asked by Urgent!!!! 
life orientation
in line 1015 critically discuss 5 ways in which the human or environmental problem impacts on the community
asked by tebogo 
Calculus
find the region enclosed by the given curves: 4x+y^2=9, x=2y
asked by Michael 
math plzzzzzzz help
593 cm = to how many metres? and plzzz show how u gound or got the answer
asked by smileyface 
science
do you know the word galaxy shaped like a wheel whithout cured arms
asked by Kandy 
chemistry
What is the theoretical yield of ethyl chloride in the reaction of 20.2 of ethylene with 53 of hydrogen chloride?
asked by Anonymous 
Finance
Comparing Future Value. Calculate the future value of a retirement account on which you deposit $2000.00 a year for 30 years with an annual interest rate of 7%.
asked by Valarie 
chemistry
What is the theoretical yield of ethyl chloride in the reaction of 20.2 of ethylene with 53 of hydrogen chloride? (For ethylene, 28 amu; for hydrogen chloride,36.5amu ; for ethyl chloride, 64.5 amu.) What is the percent yield if 23.5 of ethyl chloride is
asked by Anonymous 
English
Writeacher, I really hope you can have a look at my last examples. I need to know which are wrong. I still have a few doubts on the use of to/at/in after have been. Thank you for helping me. 1) I haven't gone out for a walk. I have already been to school
asked by Matthew 
physics
a gun shoots a potato from a height of 6 feet. how long does it take to hit the ground.
asked by armando 
Finance/ MAth
find the balance after 15 years of a $2500 investment earning 5.5% interest compounded continuously Someone show me how to do this, please?!
asked by tabby 
statistics
Children below the 30th percent are in need of special assistance assistance what raw score makes the cut off score for these children?
asked by Brittany 
african american history
what is the argument of the book arc of justice?
asked by brea 
Chem
calculate the volume in ml of 0.250 M silver nitrate solution required to react completely with a 5.00 g piece of copper
asked by No 
calculus
Solve for x on the interval (0, 2pi] (sin2x + cos2x)^2 = 1
asked by Adc 
chemistry
Hello, I have data here: tube # Contents Initial color (after 2 drops of universal indicator) Color after adding HCl Color after adding NaOH (after the HCl had been poured) 1 CO32/HCO3 Dark purple Purple Purple 2 CO32/HCO3 Dark purple   3 HCH3CO2/C
asked by Confused 
Chemistry
Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to
asked by Mima 
Algebra 2
√3x4=2√x5 Solve this equation, if there is more then one answer separate with a comma
asked by Nancy 
Biology
A plant's cell wall is made of cellulose fibers. What is the purpose of a plant's cell wall?
asked by Daija 
Physics
A capacitor is connected with a battery and stores energy U. After removing the battery,its connected with another similar capacitor in parallel. What will be the new stored energy in each capacitor?
asked by Tulika 
Chemistry
Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to
asked by Mima 
math
Maria drives 69 mph and Ming drives 60 mph. How far apart will they be in 3 hours?
asked by Sue 
English
I left out a sentence. Thank you very much, Writeacher. I haven't had my chess lesson yet. I haven't done my chess lesson (is a mistake). Can you suggest a site with exercises on the use of modals to express degrees of probabilities?
asked by Matthew 
Chemistry(Please check)
.50  x / x = 3.20e1 I need to solve for x. I was going to do .50 X 3.20e1 and then take the square root but this is not correct. I am not sure what to do. Thank you for your help. Math(Please help)  Reiny, Tuesday, April 17, 2012 at 3:18pm You probably
asked by Hannah 
chemistry
Assuming that the temperature and quantity of a gas sample remain constant, what will be the final pressure of 1.6 L sample of gas originally at 330K and 4.84 atm, when the volume is reduced to 840 mL?
asked by sam 
dressmakeing exam 04202100
the most appropriate fabric for a pregnant women's only coat would be (a) black and ehite plaid (b) solid navy blue (c red and gray stripes (d) multicolored floral, when a dainty slip has along the top edge, the shoulder straps should be attached by (a)
asked by karen 
Algebra
I am not understanding these kinds of problems: I cannot simplify with understanding. 7 times the 4th root of m^3 plus 9 times the 4th root of 256m^3.
asked by Taurus 
Social Studies
Why were Hoosiers divided over the issues of slavery and loyalty before the Civil War?
asked by Alex 
math
Find the principal in Donna's account at the end of the second quarter if she invested $300 at 7% and the interest is compounded quarterly
asked by Anonymous 
SS7R  HW Question Help!
In my other post I wrote "I'm have other 3 that I want you to check to see if they are correct. BTW  I have one more question I have trouble with." Here it is: Why did the Louisiana Purchase important to the US? Please help! btw  I'm a little curious
asked by Laruen 
Chem
calculate the volume in ml of 0.250 M silver nitrate solution required to react completely with a 5.00 g piece of copper
asked by No 
chem
A sample of hydrogen gas occupies 16.8 L at STP. How many moles of the gas are present? Answer in units of mol
asked by luke 
maths
PT bisects QR perpendicularly.P is a point on the yaxis.if Q(1;8) and R(6;1). Find the equation of PT
asked by oarabile mpane 
calculus
A swimming pool is a rectangular solid 15 ft wide, 40 ft long, and at most 4 ft deep. Water is being added to the pool at the rate of 25 cubic ft per minute. How fast is the water rising when there is 1800 cubic ft of water in the pool?
asked by Jasmine 
chem
At 119 degrees C, the pressure of a sample of nitrogen is 1.94 atm. What will the pressure be at 282 degrees C, assuming constant volume? Answer in units of atm
asked by luke 
physics
an ideal fluid in a pipe of diameter 14cm is moving at 6.0m/s. If the incompressible fluid density is 1.05grams/cc, what is the flow rate in kg/s and what is the speed of flow if the pipe narrows to 4.0cm radius?
asked by Kirk 
Algebra
Simplify: 5(cube root of 16) + 2(cube root of 54) 5 times the cube root of 16 plus 2 times the cube root of 54. I do not know how to type in the radical signs. Sorry.
asked by Taurus 
math
Sasa had some 20cent and 50cent coins. 7/8 of the coins were 20cent coins and the rest were 50cent coins.After Sasa had spent $72.50 worth of 50cent coins and 5/7 of the 20cent coins, she had 2/7 of the coins left. Find the total amount of money Sasa
asked by Al 
physics
A 70g steel bullet moves at 200m/s just before imbedding itself into a thick anchored wood post. If 70% of the initial kinetic energy goes into heating the bullet (steel c = 460 J/kgC)...how hot does the bullet become if it initially is at 26 degrees
asked by Kirk 
Physics
What is the logic behind logic NOR gate?
asked by Tulika 
math
suppose a board is 9 meters long how many centimeters long is it
asked by Anonymous 
Math question
rosie umbrella shop is selling umbrella for $4.00 off the usua price of $15.00. What is the cost of buying 3 sale umbrellas?
asked by Anonymous 
Algebra
Mr.clarks cell phone bill went from $44.00 in april to $55.00 in may. What was the percent of increase in hiss bill?
asked by Ashly 
math
Robots are being used with increasing frequency on production lines to perform manotonous task. To determine whether a robot welder should replace human welders in producing automobiles, an experiment was performed. The time for the robot to complete a
asked by ct 
Algebra(please and thanks you ) :)
What is 0.375 as a fraction in lowest terms ?
asked by Ashly 
economy
a) Minimizing Losses: Whether a firm suffering losses decides to produce or not to produce in the short run depends on the benefits and costs of continuing production. Explain.
asked by ct 
physics
A small cork with an excess charge of +5.0 ¦ÌC is placed 0.14 m from another cork, which carries a charge of −3.2 ¦ÌC. What is the magnitude of the electric force between the corks? The Coulomb constant is 8.98755 ¡Á 109 N ¡¤ m2/C2. Answer in
asked by jenny 
physics
Two electrostatic point charges of +54.0 ¦ÌC and +47.0 ¦ÌC exert a repulsive force on each other of 189 N. What is the distance between the two charges? The value of the Coulomb constant is 8.98755 ¡Á 109 N ¡¤ m2/C2. Answer in units of m
asked by jenny 
English
ms. sue you please help me with story questions? if you have time then this be story Field of Broken Dreams by Sharon Butala My memories of drives in the country when I was a child in the 1940s and early 1950s, after the devastation of the 1930s, are of
asked by Mohammad 
physics
Three point charges, +6.5 ¦ÌC, +1.4 ¦ÌC, and −3.9 ¦ÌC, lie along the xaxis at 0 cm, 1.8 cm, and 5.3 cm, respectively. What is the force exerted on q1 by the other two charges? (To the right is positive.) The Coulomb constant is 8.99 ¡Á 109 N
asked by jenny 
physics
One gram of tungsten has 3.28 × 1021 atoms, and each tungsten atom has 74 electrons. How many electrons are contained in 9.00 g of tungsten? Answer in units of electrons
asked by jenny 
Math
A farmer had a fence that encloses a square plot with an area of 36 meters squared. If the garnet uses this fence to enclose a circular flower garden, what will the area of the garden be?
asked by Deanna 
Honors Chemistry
1. What is the pH of a solution whose [H3O+] is 1 X 10^ 5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^3 M? 4. What is the pH of a solution with a [H3O+]
asked by Kelly 
math
colin is buying dirt to fill a garden bed that is a 9 foot by 16 foot rectangle. if he wants to fill it to a depth of 4 inches, how many cubic yards of dirt does he need? if dirt costs $25 per yard, how much will the project cost?
asked by christian 
statistics
I need to find the class midpoint, boundaries and class with for the following problem Tar Cigarette Filter Frequency 25 2 69 2 1013 6 1417 15 I did the midpoint and boundaries 3.5 5.5 7.5 9.5 11.5 13.5 15.5 17.5 But for the width I got an answer of
asked by ALFREDA 
History/Global Affairs
Hi beautiful people! I'm working on an assignment talking about Australia's changing national identity in the EYES OF THE WORLD. I need to look at a particular event and or events as a way to highlight this change. The problem is that I was thinking the
asked by Em 
statistics
Statistical Abstracts (117th edition) provides information aboutthe number of registered automobiles, including taxis, by state. The number ofregistered automobiles per 1,000 residents follows an approximately normaldistribution with mean ì = 514.6 and
asked by Anonymous 
URGENT!! Chemistry HELP!!
Use standard enthalpies to calculate Triangle H for: 2C2H5OH (I) + O2 (g) > 2CH3CHO (g) + 2H2O (I)
asked by Blair 
SS7R
Why was Toussaint L' Ouverture important to Haiti? Answer  He was a leader of the slave revolt in Haiti. am i correct????? if im incorrect plzzzzz help me
asked by Laruen 
life orientation
five ways in which you critically discuss how cancer disfase behaviour impact on the teenager
asked by betty 
Plz help me... one science Q!
18. A pebble drops straight down into a tub of water, setting off ____________________ waves that travel at the boundary between the water and air. (1 point)
asked by Ms. Simpsonizer 
Biology
can anyone help me by defining what is holophytic? please
asked by sandra 
Physics
A 30m radius automobile tire rotates
asked by Lott 
Life orientation
Name two institutions organizations that are involved in supporting or giving redress to these disasters
asked by Leo 
biology
please help me by answering these questions: 1)how many salivary glands are present in our body? 2)what are the names of those salivary glands?
asked by sandra 
life orientation
critically discuss 8 way in which the environmental problem impact on the within your community or any other community within south africa or globally
asked by precious 
Algebra
What property justifies this equation : 565 + 263 = 263 + 565 Identity property Comunitive property of addition Associative property of addition Distributive property
asked by Ashly 
English
What are some adverbs that show condition? All I can find are adverb clauses that show condition.
asked by Li 
earth
1.What's the heat trapping action of gases in the atmosphere?
asked by misa 
Chemistry
Methane, butane, propane and octane are all simple hydrocarbons. Why are these hydrocarbons used differently? I believe they are used differently because of their carbon chains. They are commonly used for different fuels since large amounts of energy are
asked by Anonymous 
chem
A hydrofluoric acid buffer solution has the following concentrations: [HF]=0.43M [F]=0.45M If 40 mL of 0.1M NaOH is added to 500 mL of the buffer, what is the resultant pH?
asked by Jess 
Physics
Question A deflecting force is experienced by a charged particle entering a magnetic field. The deflecting force is always______ A. parallel to the magnetic field lines B. parallel to the motion of the charged particle C. perpendicular to both the motion
asked by James Mesch 
Percalc Helppppp
keep in mind answers should be pi radians or if necessary 3 dec. csc^22=0 all angles 4cos^2x4cosx+1=0 all angles and name 8 angles 7sin^2x22sinx+3=0 all angles and name 8 angles 2cos^2x7cosx=3 all angles sinx(2sinx+1)=0 all angles
asked by Amanda 
physics
27. A communications satellite transmits a radio wave at a frequency of 5 • 109 Hz. What is the signal’s wavelength? Assume the wave travels in a vacuum. Show your work. (3 points) I at least need the formula and how to solve it... not the answer.
asked by Ms. Simpsonizer 
Percalc Helppppp
find: tanx=3 one period and all angles 3csc^2x=4 one period and all angles sin2x+cosx0 one period
asked by Amanda 
Math
Let f(x)= 2x^2, g(x)= 5x6, and m(x)= 3x. Find and simplify the composite function g(m(f(x))).
asked by Ariel 
PreClac
The height in inches about the ground of the tip of the hour hand is a function, h(t), of the time (t), in hours. The hour hand is 6 inches long and the middle of the clock face is 68 inches about the ground. Identify the period, midline, and amplitude of
asked by I need help 
Algebra 2
(x^2+8xy+16y^2)^(1/3)*(x+4y)^(1/3)
asked by Chelsea:) 
Life Orientation
Identify and describe one environmental problem that causes crises,ill health,and disasters in South Africa?
asked by Natalie 
to ms.sue
do you know a website that gives you reviews of tests. im looking for harcourt trophies story:the gold rush
asked by Celest 
Math
Meg flipped a penny 2 times. What is the probability she get 2 heads?
asked by Jim 
chemistry
Calculate the mass of barium chloride you need to make a 0.200 m barium chloride solution with 100.0 g of water.
asked by hereyago 
chemistry
A potassium iodide solution is made by mixing 0.520 g of potassium iodide with 120.0 mL of water. Calculate the molality of potassium iodide. Assume that the density of water is 1.000 g/mL
asked by hereyago 
PreCalc Help
Evaluate the expression under the given conditions. (show work please) sin(AB); tan A=12/5, A in quadrant 3, sinB=3sqrt(10)/10, B in quadrant 4.
asked by Daniel 
chemistry
Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression constant of water is 1.86°C·kg/mol and that the freezing point of water is 0.00°C
asked by hereyago 
chemistry
The procedure described in this experiment was used to determine the molar mass of unknown liquid (nonelectrolyte). The solution was made by mixing 0.961 g of the unknown with 100.0 g of water. The freezing point depression of the solution was −3.7°C.
asked by hereyago 
math
5/72/3=
asked by paul 
Algebra
Norman traveled 261 miles on a trip to bates. The trip took 4 1/2 hours. If he then drives for 1 1/2 hours to leighsville, which is another 81 miles farther, what its his average rate of travel for the entire trip?
asked by Shaylin 
English
I still have a few doubts on sentences you checked yesterday. 1) I did/had/went for an interview. (Is "do" possible?) 2) I've just taken (done is a mistake) a grammar test. 3) I've just been tested orally in English. 4) I haven't taken an oral English test
asked by Matthew 
physics
A physics student drops a book into a shaft 250m deep,where the average mine temperature is 5 degrees celsius.Show that the sound of the book striking the bottom is heard after 7.82 seconds
asked by musuma 
Dynamics
Okay so I have a 1/2 in thick ellipsoidal steel plate where (p=493 lb/ft^3) and it has a major axis diameter of 4ft and a minor of 2ft. the plate rolls w/out slipping (friction=0.15) and in a vertical position has an angular velocity of of w=4 rad/s(i.e.
asked by Micheal 
Inttroduction To Business
1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated.
asked by Sherri Mcgovern 
statistics
From a random sample of 500 males interviewed, 125 indicated that they watch professional football on Monday night television. Does this evidence indicate that more than 20% of the male TV viewers watch professional football on Monday evenings? Use the
asked by lola 
chemistry
give at least 3 atoms with its isotopes and its application?
asked by ANNA 
Physics
Suppose an electron was bound to a proton as in the hydrogen atom, but by the gravitational force rather than by the electric force. What would be the radius and energy of the first Bohr orbit?
asked by Katie 
English
Writeacher, I downloaded a few details about modals expressing possiblity/probabity but I'm still doubtful about their use. My questions to you are numbers 12. Using modals to talk about the present: 1)Will / won't We use will and won’t when we are very
asked by Matthew 
Science
A bear is an omnivore.Which of the following would be an example of items a bear could eat that would prove the bear is an omnivore? A.nuts and berries B.fish and berries C.fish and meat D.berries and honey B?
asked by Jerald 
math
A jar consists of 21 sweets, 12 are green and 9 are blue. William picked 2 sweets at random. Find the probability that both sweets are blue.
asked by jenny 
Integral calculus
Hello, this is the last question from my homework that I get stuck at: ∫ (5^3/x  (x^8 + 9)^1/3 ) / 3x^2 will u, for sub. be = x^8 + 9? Then du is = 8x^7 dx x^7 dx = 1/8 du from there I'm stuck. Thank you
asked by Tommy 
maths
A triangle has side lengths in the ratio 3:4:5. I the perimeter of the triangle is 84 cm, what is the length of the shortest side?
asked by Kylie 
Music Physic
The trombone's low B flat 2 is played with the slide in first position. What is its effective length, that is the length of an idealized closed tube with the same second mode frequency? Estimate how far the slide should be moved to reach second position in
asked by AAA 
Science
Which of the following is a star? Earth Sun Moon a Comet? Sun?
asked by Jerald 
Math
Evaluate the integral from 0 to 4 of (x+1)/(16+x^2) dx the answers are log(sqrt2) + pi/16 Could you please take me through how to get to that answer please, thank you very much!
asked by Candice 
Integral calculus 2
This is also one I can't figure out: ∫ x^3 (2x^2 + 1)^1/2 dx u is obviously = 2x^2 + 1 du = 4x dx x dx = 1/4 du 1/4 ∫ x^3 u^1/2 from here I know I can't integrate because I can't have more than 1 variable. Thank you
asked by Tommy 
Math
The region above the curve y = sin^1(x), (0 greater than or equal to y greater than or equal to pi/4), is rotated about the yaxis through a complete revolution to form a solid. Evaluate the volume. Thanks!
asked by Candice 
math
Karen put 60% of paycheck into her savings account. If Karen put $120 into her savings account, what was the amount of her entire paycheck
asked by keshia 
chemistry
what are the applications of the silicon atom with its isotopes of 28,29,and 30?
asked by ANNA 
Math
Evaluate the integral from 0 to sqrt3 cot^1(x) dx. Thanks :)
asked by Candice 
statistics
The mean of math SAT scores is 500 and the standard deviation is 100. A random sample of 64 students from Leeds H.S. received an average of 480. Conduct a hypothesis test to determine if the population mean SAT score for Leeds H.S. is less than 500 with
asked by lola 
physics
You have exactly 1 L of ethyl alcohol at room temperature 23 C. You put it in a refrigerator at 4 C.What's its new volume?
asked by I 
physics
A certain refrigerator is rated as being 39% as efficient as a Carnot refrigerator. To remove 102 J of heat from the interior at 0 °C and eject it to the outside at 23 °C, how much work must the refrigerator motor do?
asked by zuhra 
pharmacy
suggest a technique , other than tlc, to confirm the purity of the samples
asked by pavan 
science of sound
a violin string’s length from nut to bridge is 33 cm, and on the open string A=440 Hz is played. What is the wavelength of the sound?
asked by Anonymous 
Economics
"The government decides to increase tax (ceteris parabis)". > what is the effect of this in an economy?
asked by CrissyXD 
math
The water in fish tank has evaporated so it was 5/8 inch below the level it should be they added water and the water level went up 3/4 inch did the water level end up above or below where it should be
asked by john 
calculus
what is the linear approximation of f(x)=x^3x at x=2
asked by jess 
5th grade math
the points that amelia scored for each game are shown 325, 198, 262, 301, 275, 229 after her seventh ga, the range of her points was 129 points how many points did she score in the seventh game
asked by christian 
English
i still be working on metaphor assignment for the fruits, i write that if tree bear fruits that represents achievement/success for writing ive written. do that make any sense?
asked by Mohammad 
Science
Trees will most likely compete with one another for A.carbon dioxide B.soil C.water D.oxygen I know trees take in carbon dioxide and release oxygen. But im not sure which is the answer. Is it C?
asked by Jerald 
Statistics
A large television repair service claims that its average repair charge is $124. Suspecting that the average charge is higher, a consumer group randomly choose a sample of 35 statements for tv repairs done by the repair service and found the mean was
asked by lola 
Math
The tail of a giant kangaroo is attached by a giant rubber band to a stake in the ground. A flea is sitting on top of the stake eyeing the kangaroo (hungrily). The kangaroo sees the flea leaps into the air and lands one mile from the stake (with its tail
asked by Confused! 
English
Sorry, for asking you the same thing again, but I really don't know if I have to leave these two sentences as they are. 1. I have already been at school today. 2. I have already been to school today. (Is there a difference between them?) 3.I haven't been
asked by Matthew 
to ms.sue
what do miners do in order to start mining. a go to a boom town b build flumess cstake a claim d find a grubstake i think its c.
asked by Celest 
chem
At STP, what is the volume of 8.38 mol of nitrogen gas? Answer in units of L
asked by luke 
Science
Which of the following objects can reflect light? A.camera B.telescope C.tinted window D.eyeglasses C?
asked by Jerald 
programming
Write a simple ATM program. Ask the user to enter their account number, and then print their beginning balance. (Just make one up). Then ask them if they want to make a deposit or a withdrawal. Depending on their selection, call a function to perform the
asked by Tammie 
memorial
Peter and Ashley each drew a triangle with an angle of 59 degrees. Under which condition would the triangles be similar?
asked by Taylor 
math
find equivalent fractions with a common denominator and order from least to greatest.1/2 4/9 4/18
asked by kaitlen 
Social Studies 10 Oregon Territory
1. Compare and contrast American and British attitudes toward the Oregon Territory: 2. Which attitude do you think would be more effective in gaining control of the Oregon Territory. 3. How might the Americans and British have attempted to undermine each
asked by Ryan 
Physics
Is the speed of light constant as it passes through transparent materials?
asked by James Mesch 
Commerce
Provide recommendations on how to address the topic that you identified in the previous question
asked by N.k 
math
If three identical cubes have 3x^2+18x^2+36x+24 find a possible length of one side of one of the cubes
asked by Anonymous 
math
find function values f(x)=9x^2+10x8
asked by angel 
Commerce
Name two institutions that are involved in supporting these disasters.explain how these organizatins are involved in providing a safe and healthy environment
asked by N.k 
physics
what is the wavelength of light of frequency 100Hz?
asked by its urgent!!!!!!!! 
Cardiovascular Respirtory
Which one of the following words means "the surgical repair of the larynx? A.Laryngectomy B.laryngostomy C.Larynoplasty D. Laryngostenosis My answer is (A) can someone check my answer
asked by Brenna 
political science
A _______________ is the best example of an informational benefit provided by many interest groups. a) travel discount b) free Tshirt c) health insurance program d) newsletter e) consciousnessraising workshop
asked by tina 
physics
Heat is added to an ideal gas at 20 degrees Celsius. If the internal energy of the gas increases by a factor of three during this process, what is the final temperature?
asked by William 
Math
Maria is playing a game of chance at the Hibiscus festival, costing $1 for each game. In the game two fair dice are rolled and the sum of the numbers that turn up is found. If the sum is seven, then Maria wins $5. Otherwise Maria loses her money. a)
asked by Koia 
Algebra
Please help solve Problem of the Week Waiting in line... The week before the big concert, five friends Alan, Ben, Cameron, Derryck, and Garrett, stood in line to buy tickets. There were other people there, but the five friends were in the line in the order
asked by Linda 
physics
Explain how the specific heats of materials are measured using the technique of calorimetry.
asked by William 
Ä·Ä«mija
Savienojuma reakcija ?
asked by Ingus 
math
There are 24 counters. How many counters could you add without having to regroup? Why?
asked by Eric Rosado 
to ms.sue
so it's d?
asked by Celest 
math
Biologist have have found that the weight W of a bird and the length L of it’s wing span are related by L=kW1/3, where k is a constant. The following list L and W for one species of bird. What is the value of k? W kilograms0.1 0.4 0.8 1.1 L meters 0.399
asked by angel 
GEOMETRY
A PERSON STANDING 30 FEET FROM A FLAGPOLE CAN SEE THE TOP OF THE POLE AT A 35 DEGREE ANGLE OF ELEVATION. THE PERSON'S EYE LEVEL IS 5 FEET FROM THE GROUND. FIND THE HEIGHT OF THE FLAGPOLE TO THE NEAREST FOOT.
asked by Dempsey 
Physics Question. About cubes Mass
If a solid cube has a density of 9kg/m3 and a volume of 27 cubic meters, what is the mass of the cube? A 81kg B 3kg C 9kg D 243kg
asked by James Mesch 
Physics Question. About cubes Mass
If a solid cube has a density of 9kg/m3 and a volume of 27 cubic meters, what is the mass of the cube? A 81kg B 3kg C 9kg D 243kg
asked by James Mesch 
chemistry
You need to make a solution containing 150 g of potassium chloride in 300 g of water. What temperature is required?
asked by Anonymous 
physics
A cylinder with height 5.0 m is made by mixing materials with different indexes of refraction. The mixture is prepared such that the index of refraction is 1.0 on one end, 2.6 on the other end and varies linearly in between. How long does it take light to
asked by sand 
Please can you help me (Probability)
Maria is playing a game of chance at the Hibiscus festival, costing $1 for each game. In the game two fair dice are rolled and the sum of the numbers that turn up is found. If the sum is seven, then Maria wins $5. Otherwise Maria loses her money. a) Please
asked by Fakaapo. Suetusi 
Health Science
What is the pulse deficit if an apical pulse is 112 and the radial pulse is 88?
asked by Ally 
Calculus
Find the area of the region enclosed by the given curves: 4x+y^2=9, x=2y
asked by Michael 
Math 10 Linear Equations
Kevin opened a bank account and plans to deposit $200 each month. Each time he makes a deposit, his parents have agreed to add 50% of the amount the family collects for returning cans and bottles. a) Write an equation that will show his monthly amount when
asked by Emily 
physics
Which of the following is forward biased? (i canna draw so plz manage wid dis) (0V)pn(2V) (4V)pn(3V) (2V)pn(2V) (3V)pn(5V)
asked by its urgent!!!!!!!!!! 
Economics
Which of these products or services is likley to have an inelastic supply on a short run? A. Cargo Ships B. Haircuts C. Staples I said D am I rights?
asked by Anonymous 
chemistry
The molal boiling point constant (Kb) for water is ).51oC/m and the molal freezing point constant (Kf) for water is 1.86oC/m. Given this information here is the question... If I pour 25 mL of 0.035 M NaOH into 975 mL of water, what is the new concentration
asked by Sarah 
physics
When an electron jumps from the 4th orbit to the 2nd orbit which series line does it get?
asked by its urgent!!!!!!!!!! 
Economics
A large increase in gas prices creates a demand for cars with good gas mileage. It takes months for car companys to make these cars. How do you describe this market for cars? A. Inelastic B. Static I said A.Inelastic because, its a short run and the firm
asked by Anonymous 
Math
Roger wants to carpet a rectangular room with the length of 8 ¾ feet and a width of 9 1/3 feet. If he has 85 square feet of carpet, how many square feet of carpet will be left after he covers the floor of the room?
asked by Fred 
Economics
How does a persons perception of a good as a neccessity or a luxury effect his or her purchase of it? A. people who have alot of money will buy goods even if they think they are a luxury. B. a good that is perceived as expencive will no longer be
asked by Anonymous 
math
In 2000 the population of a state was 5 million and growing continuously at a rate of 3.4% per year. a) Write a function that models the state’s population in millions x years after 200. b) Graph f in 0,10,1 by 4,7,1 c) Estimate the state’s population
asked by angel 
chem
What is the volume of 2.8 × 10^6 molecules He? Answer in units of L
asked by luke 
English
I have an test on these and I do not want to fall the test. Please tell me a ways I can study, online tests etc so that I can pass it. Thank you and I appreciate for your help! They are: They will be fill in the blanks, multiply choices. (1)Petroleum (2)
asked by Amanda 
Commerce
Provide recommendations on how to address environmental factors
asked by N.k 
math
The population P in 1995 for a state is given along with r, its annual percentage3 rate of a continuous growth. P=16 millions, r=1.2% Write the formula f(x) =Pe^yx, where r is in a decimal notation, that models the population in millions x years in 1995.
asked by angel 
Algebra 1
2) A family of 2 adults and 3 children go to the county fair that sells raffle tickets for 75¢ each. Admission price is $5 per child and $8 per adult. Let n be the number of raffle tickets bought. 2a) Write a function in the form of C(n) to describe the
asked by Diane 
French
I need an accurate translation for this: "Two accusation people make of Americans is that we are lazy and spoiled. This is an unfair accusation, for we are all different." in french Thank you for all the help given.
asked by Evaline 
life orintation
identify and describe one environmental problem that causes ill health,accidents,crises,and disasters within your community or any other community within South Africa or globally
asked by zodwa 
Math
How do you evaluate these expressions? 13 + (29) or (32) 44
asked by Kam 
science
Define the main goals and strategies of green intelligence. Do you think marketbased approaches could save the planet? Why or why not?
asked by Anonymous 
English
Writeacher, I downloaded a few details about modals expressing possibility/probability but I'm still doubtful about their use. My questions to you are numbers 12. Using modals to talk about the present: 1)Will / won't We use will and won’t when we are
asked by Matthew 
Alg2/Trig
Write the log as a single function: logx + 2logy  logz
asked by Alayna 
Pre calculus
finding equations for the hyperbola whose graph is F(0,13) and F(0,13)
asked by Ariel 
Economics
In a market supply, what factor would cause a decrease in meals served? A. lifting of excise taxes B. government farm subsidies C. high global demand for fuel My grandmother says A. but i say B. whos right me or her? Someone help please!!
asked by Anonymous 
chemistry
Calculate the theoretical yield of the precipitate formed when a solution containing 1.02 grams of lithium phosphate is mixed with a solution containing 2.72 grams of strontium nitrate
asked by Rayna 
math
why is it hard to find the mass of the statue of librty
asked by witshell 
English
I still have a few doubts on the use of to/at/in after have been. Thank you for helping me. 1) I haven't gone out for a walk. I have already been to school (or at school) today. I haven't been to the cinema yet today. 2) I've already gone shopping online.
asked by Matthew 
physics 101
A solid uniform disk of mass 21kg and radius 85cm is at rest flat on a frictionless surface. A string is wrapped around the rim of the disk and constant force of 35N is applied to the string, which does not slip on the rim, in the positive x direction. (a)
asked by Artin 
Music Physics
Given that the oboe's lowest note is B flat 3 and its length approximately 64 cm, what length would you expect for the bassoon, whose lowest note is B flat 1? What length for the contrabassoon, lowest note b flat 0?
asked by AAA 
Music Physics
The clarinet's lowest note is D3, 147 Hz. What is its effective length, that is, the length of an idealized closed pipe that has this frequency for its first mode? Explain why this is less than the actual length of the instrument?
asked by AAA 
SS7R HELP!
I have a worksheet for which is due tomorrow and my teacher is grading it. I'm having trouble with 3 questions (it have 7 questions) please help me. 1. Why did the western farmers oppose Spanish and French control of New Orleans? 2. Why was Toussaint L'
asked by Laruen 
SS7R  3 HW Question Check
4. What were Jefferson's concerns in purchasing Louisiana? Answer  Jefferson's concern in purchasing Louisiana is that he had always insisted that the federal government had only those powers spelled out in the constitution. 5. Jefferson sent Lewis and
asked by Laruen 
math
eighteen railroad ties, each 2.9meters long, are laid end to end. find the total length in meters, of the eighteen ties
asked by keshia 
PreCalc Help!!!!!!!!
Evaluate the expression under the given conditions. sin (A+B); tan A= 12/5, A in quadrant 3, sin B= 3sqrt(10)/10, B in quadrant 4.
asked by Amanda 
English
Writeacher, what does "blasè" mean? Example: I was getting a bit blasè by the time I had my last interview. I still need to check a sentence. Thank you very much. 1) Speaker 2 believes that appearance is important when going for an interview. For this
asked by Matthew 
chemistry
What are the various uses of radioactivity in healthcare? What are the future trends in healthcare with respect to the use of radioactivity?
asked by Anonymous 
English
1. One question at a time. 2. Ask one question at a time. 3. Ask me one question at a time. 4. Ask one question of me at a time. 5. Ask one question at a time of me. (Are they all the same? Can we use all the expressions?)
asked by rfvv 
Physical Science
The conversion of water to ice is considered a physical change, whereas the conversion of iron to rust is considered a chemical change. Why?
asked by Jess 
math
Ellen drove 220 miles in 3.5hours. To the nearest tenth, find Ellen's average speed in miles per hours
asked by keshia 
Science
A group of trees are on a hillside The trees will most likely compete with one another for A.carbon dioxide B.soil C.water D.oxygen I think it's C I know that plants take in carbon dioxide and give out oxygen
asked by Jerald 
math
wat is the value of (2/3)to the 2power?
asked by keshia 
MATH
WHAT IS THE MEAN
asked by AITA 
Trig?Precalc
write the rectangular equation x^2+y^2=6 in polar form. I do not want people to just post the answer! Please, show your work so that I can understand how to do these kinds of problems myself! Thank you and God Bless!
asked by tabby 
ECO/372
What are online and text based resources?
asked by at 
English
Yes, it does make sense. Blasè means uninterested. Could you please check if everything is OK as I made a few changes? Thank you very much! 1) Mr. Otis buys Canterville Chase from Lord Canterville. After that, Mr. Otis drives with his family to
asked by Matthew