Questions Asked on
March 1, 2015

Trigonometry
Sarah used her calculator to find sin125 degree. She wrote down sin125 degrees = .57. How could Sarah recognize that her answer is incorrect?
asked by O 
Statistics
Suppose that the distance of fly balls hit to the outfield (in baseball)is normally distributed with a mean of 250 feet and a standard deviation of50 feet. a. If X = distance in feet for a fly ball, then X ~ _____(_____,_____) b. If one fly ball is
asked by Gail 
physics
A car has a uniform velocity of 108km/h. How far does it travel in 1/2 min
asked by Godspower 
physics
Grant accelerates a 1kg ball 5.0m/s2 horizontally. The vertical acceleration of the ball is zero. The force of gravity is the only external force acting on the ball other than the forces Grant exerts on it. aHow large is the horizontal force grant exerts
asked by aaron 
Impulse and Momentum
A bullet of mass m is fired at speed v0 into a wooden block of mass M. The bullet instantaneously comes to rest in the block. The block with the embedded bullet slides along a horizontal surface with a coefficient of kinetic friction . What is the
asked by Jennifer 
Calculus
Find out the partial derivative w.r.t 'x' and 'y' of f (x,y) = log(y) x Now, log(y) x = ln x / ln y Partial Diff w.r.t 'x' = 1/ x ln y so can you find out what will be the partial derivatives w.r.t 'y'
asked by Akki 
Algebra
James has a board that is 3/4 foot long he wants to cut the board into pieces that are each 1/8 foot long how many pieces can James cut from the board
asked by Juvia 
Simultaneous equations
3x14y=O and x4y+1=0
asked by Lee 
chemistry
The standard enthalpy of formation at 298k for ccl4,h2o,co2,hcl are 22.5,57.8,94.1 and22.1 kcal/mol.calculate ▲rH FOR reaction ccl4+2h2o→co2+HCL
asked by rakesh dhakal 
Physics
There is an 8 meter tall hill with a circular radius of 20 meters. What is yhe minimum speed a car needs to momentarily lose contact with the road?
asked by Valerie 
physics
a jeepney from rest accelerates unit fromly covers the time 3.25s. and covers in 15m. Determine the acxeleration of jeepney
asked by azihr 
statistics
In a test of the effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garic in a processed tablet form. Cholesorol levels were measured before and after the treament. the changes in their levels of LDL cholestorol (in mg/dL have
asked by slomomo 
Math
A student scores 74 out of 100 on a test,If the maximum score is 100. What score does the student need at least an average of 80?
asked by Angie 
geography
social, political, and economic changes made under the tokugawa shogunate
asked by rosie 
soc 120
Which of the following examples best demonstrates to most people that ethical progress has taken place over the past 200 years? (Points : 1) Laws that prohibit discrimination based on race Laws that have increased speed limits Laws that prevented women
asked by Anonymous 
Science
One light bulb in a string of lights goes out this causes all other lights in string to go out. This is example of A. Resistor B. parallel circuit C. Closed circuit***** D. Series circuit When a switch is turned from the off to the on position it is
asked by BUBBLES 
math
A retailer planned to buy some computers form a wholesaler for a total of Shillings 1,800,000. Before the retailer could buy the computers the price per unit was reduced by shillings 4,000. This reduction in price enabled the retailer to buy five more
asked by OJ 
math
if you 99 lines on a piece of paper so that no two lines are parallel to each other and mo three lines pass through the same point,how many times will they intersect?
asked by tebatso 
Quick chemistry help
Please help with these two problems! 1. 566g of C12H22O11=______ C atoms 2. 12 molecules chlorine gas= ________ atoms of Cl
asked by Anonymous 
Chemistry
You have 23.0g of water initially at 46°C. How much energy in joules is required to heat the ice to 0°C? c ice = 2.1 J/g°C. I thought joules was calculated by grams*change in temperature*specific heat. The answer I get from 23*46*2.1 is 2221.8, but web
asked by Harrison 
Chemistry
A standard KHP solution is made by dissolving 2.12 grams of KHP in 100.00 mL of water. The KHP solution is then titrated with NaOH solution. It takes 23.12 mL of NaOH to reach the endpoint. What is the concentration of the NaOH?
asked by Anonymous 
Chemistry
Procedure 0) The sodium phosphate, Na3PO4 solution has NPFA ratings of 1 (out of 4) for health, 0 for fire, and 0 for reactivity. Cobalt (II) nitrate has 2 for health, 0 fire, and 0 for reactivity. 1) Carefully label (1‐6) and weigh 6 small test
asked by Chem 
chem
Write the equilibrium expression for the following: 2NOCl (g) ==== 2 NO + Cl2 (g)
asked by Steph 
chemisty
The initial concentration of NO2 in a closed container is 0.750M. At equilibrium the concentration of O2 is 0.125M. What are the concentrations of NO2 and NO at equilibrium? 2NO2 (aq) ==== 2NO (aq) + O2 (aq)
asked by S 
math
Solve 6k^217k3=0
asked by Lizzy 
Statistic
A quiz consists of 10 multiplechoice questions. Each question has 5 possible answers and only one of them is correct. A student has not studied for the quiz and will pick his answers randomly. 1)Define the random variable x that will be used for problem,
asked by Amriajasmine 
chemistry
CH4+2O2CO2+2h2O Use this balanced equation to calculate the mass of water formed when 32g of methane burns
asked by Victoria 
Life Orientation
By means of a pratical example, describe the conflict that exists between the SHOULD and the WANT as discussed in the source above?
asked by Codesa 
Chemistry Need Help
How many grams of baking soda, NaHCO3, are needed to react with 125 mL of stomach acid having an HCl concentration of 0.05984 M? The reaction is NaHCO3(aq) + HCl(aq) → NaCl(aq) + CO2(g) + H2O(l). Do I need to chenage mL to L first? I'm really stuck with
asked by christine 
ELA
in the article " Letter From Jackie Robinson on Civil Rights " for short response 1 I cant find what African americans want to recive and the details that support it. and for short response 2 I cant find how president Eisenhower unknowingly crush the
asked by Megan 
funfamental concepts
Robby uses his knowledge of how many marbles fit in a scoop to predict how many marbles will fill a jar. This concept is known as A. chunking. B. counting on. C. guessing. D. seriation. my answer is I think d.
asked by lauren 
science
what is the balanced chemical equation for (NH4)2SO4 + CuSO4.5H2O?
asked by Bonga 
Chemistry
The rate constant for the decomposition of gaseous azomethane, C2 H6 N2 (g) > N2 (g) + C2 H6 (g) Is 40.8 min1 at 425OC. Find the number of moles azomethane and the number of moles of nitrogen 0.0500 minutes after 2.00 g of azomethane is introduced. Assume
asked by Mahnoor 
soc. 120
Which statement represents a utilitarian viewpoint about the legality of !@#$%^&ography? (Points : 1) !@#$%^&ography harms people who participate in it. !@#$%^&ography demonstrates the virtue of sex. !@#$%^&ography serves to enhance the enjoyment of a
asked by Anonymous 
math
A couple can afford to make a monthly mortgage payment of $850. If the mortgage rate is 2% and the couple intends to secure a 30year mortgage, how much can they borrow? (Round your answer to the nearest cent.)
asked by amanda 
math
If r = 7 m then d = what c = what
asked by jj 
English
What is an example of a sentence using the following pair of antonyms. 1, deficiency and surplus 2. replenished and emptied 3. alleviate and increase
asked by Hayley 
Impulse and Momentum
In the game of billiards, all the balls have approximately the same mass, about 0.20 kg. The cue ball moving west with a speed of 4.5m/s strikes another ball at rest. After the collision the cue ball moves at an angle of 55degree north of west and the
asked by Jennifer 
statistics
Fewer young people are driving. In 1983, 87 percent of 19 yearolds had a driver's license. Twentyfive years later that percentage had dropped to 75 percent (University of Michigan Transportation Research Institute website, April 7, 2012). Suppose these
asked by soni 
AP Calc
Find the volume of the solid generated by rotating the region bounded by the graph of y=x^2, y=0, x=1, and x=3 about the line parallel to the xaxis and one unit below it. Please help I have no idea how to solve this problem.
asked by anonymous 
applying fundamental concepts
Robby uses his knowledge of how many marbles fit in a scoop to predict how many marbles will fill a jar. This concept is known as A. chunking. B. counting on. C. guessing. D. seriation. my answer is b.
asked by lauren 
algebra
I an taking a pre test and I can't figure this question out at all 56x^7+21x^4+63^3
asked by Debbie 
math
a object that is 3.9 feet tall cast a shadow that is a 11.7 feet long. how long in feet would the shadow be in feet if the object is 16.5 feet tall
asked by tameka 
please help me guys physical sciences
1.an engine develops 65kW over a period of 20minutes. The engine uses 5kg of petrol. Calculate the following: A. The heat gegenerated B. The power generated by the petrol C. The efficiency Of the engine 2.A square steel plate with sides of 12cm long, is
asked by Bettina 
algebra
Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed,
asked by dumb boy 
AP Calc
find the area in the first quadrant bounded above by y=sinx, below by the xaxis, and to the right by x=pi/2 is divided into two equal parts by the line x=a. Find a.
asked by Josh 
Calc
Find the area in the first quadrant bounded by the curve y=(9x)^1/2 and the x and yaxis.
asked by Max 
AP Calc
The curve y=x^3 intersects the line y=7x6 at three points, (3,27), (1,1), and (2,8). Find the total area bounded by y=x^3 and y=7x6.
asked by Isaac 
Math
The curves y=sinx and y=cosx intersects twice on the interval (0,2pi). Find the area of the region bounded by the two curves between the points of intersection.
asked by Ian 
physics
a block of ice slides down a 45degree inclined plane in twice the time it takes to slide down a 45degree frictionless inclined plane. what is the coefficient of kinetic friction between the ice block and the plane?
asked by Anonymous 
physics
a block of ice slides down a 45degree inclined plane in twice the time it takes to slide down a 45degree frictionless inclined plane. what is the coefficient of kinetic friction between the ice block and the plane?
asked by ogba 
Physics
A group of soldiers hid at the bottom and against the wall of a 100 m. high cliff. Unknown to them, the Evil rebels have positioned a cannon on top of the cliff; 8,000 m. from the edge. If the cannon has a muzzle speed of 320 m/sec, how close to the bottom
asked by akocciara 
Maths
calculate the difference between the compound interest and the simple interest on R2000000 at 6% p.a. after 3 years
asked by nonopa Athi 
math
Adam wants to compare the fraction 3/12, 1/6, and 1/3 he wants to order them from least to greatest and rewrite them so they all have the same denominator
asked by Anonymous 
physics
A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. awhat is his horizontal
asked by aaron 
Math
Find the volume of the solid generated by rotating the area bounded by y=x^2 and x=y^2 about the xaxis.
asked by Jacob 
math
The gradient of the tangent to the curve y= ax^3 + bx at the point ( 1, 1) is 5. Calculate the values of a and b
asked by kudu 
maths lit,civil technology,egd,physical science
Can i possibly be accepted for land surveyor if am doing these subject
asked by neliswa 
Math
A Kenyan businessman bought goods from Japan worth 2, 950 000 Japanese yen. On arrival in Kenya custom duty of 20% was charged on the value of the goods. If the exchange rates were as follows: 1 US dollar = 118 Japanese Yen 1 US dollar = 76 Kenya shillings
asked by OJ 
math
How can I solve the diagonal of a cube with a formula of s square root of 3, if the given is csc x = 2 ? how will i solve for the side of the cube to get its diagonal?
asked by Ammiel 
Physics
The brakes of a truck cause it to slow down by applying a retarding force of 7760 N to the truck over a distance of 870 m. What is the work done by this force on the truck?
asked by Chris 
Physics
A 24.8g bullet is fired from a rifle. It takes 2.15 × 103 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 778 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted
asked by Chris 
math
Option A $5.75 for each visit Option B Yearly membership for $99, plus $.50 for each visit write an inequality that can be used to determine the minimum number of times a person would need to visit the gym in a year in order for option B to be less
asked by jill 
math
The longest side of a triangle is six more units that the shortest side. The third side is twice the length of the shortest side. If the perimeter of the triangle is 25 units, write and solve an equation to find the length of all three sides of the
asked by Valdo 
math
vani scores 90% in 5 subjects and veena score 80% in 4 subjects who scores more?
asked by arnav 
Physics
A worker pushes horizontally on a 25 kg crate resting on ground level. The coefficients of static and kinetic friction are 0.4 and 0.3.? a) How much force must he apply to start the crate moving? b) After the crate has stereo moving, how much force must he
asked by Ashley 
Chemistry
If I have 50.0 mL of HA at a concentration of 1.20M and 50.0 mL of NH4OH at a concentration of 0.92M, how many moles of the limiting reactant are there? I guess I should start with a balanced equation, but I have no idea where to start..
asked by Sara 
Algebra II
From 19901994 the mail order sales of health products can be modeled by S= 10t^3+115t^2+25t+2505 where S is the sales (in millions) and t the number of years since 1990. In what year were about $3885 million health products sold.
asked by . 
Physics
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 80 cm and is wound around the top at a spot where its radius is 2.0 cm. The thickness of the string is negligible.
asked by Cass 
Physics
A 7.5 kg box is on a table. What is the normal force acting on the box in each of the following situations? a) You leave the box alone. b) You push down on the box with a force if 20 N. c) You pull up on the box with a force of 20 N.
asked by Ashley 
business math
Workers who manufacture shirts are sometimes paid based on the number of shirts they produce. Compute Lyle's gross pay if she made 380 shirts. The rate per shirt is given by the differential piecework schedule below: Pay Level Items Produced Rate per Item
asked by trieu 
math
Two people start from the same point. One walks east at 4 mi/h and the other walks northeast at 3 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to three decimal places.)
asked by Noah 
Chemistry combined gas law
Can someone tell me if I did this combined gas law problem correctly? What would happen to the volume of a container whose initial volume is 21.5 L at STP (standard pressure) and is introduced to conditions of 93.2 kPa and 333 K? Formula: P1 x V1 / T1 = P2
asked by Theresa Kwnt 
math
A spring is attached to the ceiling and pulled 12 cm down from equilibrium and released. The amplitude decreases by 17% each second. The spring oscillates 16 times each second. Find an equation for the distance, D the end of the spring is below equilibrium
asked by jeff 
Criminal Justice/Probation & Parole
The defendant's rap sheet: A. cannot contain any abbreviations. B. is the arrest record of the defendant. C. always includes the disposition of any arrests. D. typically describes each offense and whether it is a felony or misdemeanor. I think it's B, but
asked by Pat 
Criminal Justice/Probation & Parole
The PSI: A. is based on the concept of parens patriae. B. is required in all felony cases. C. reflects classical school interest in the offender. D. None of the above I don't see A,B,C, in my textbook, so I am assuming it's D. Am I right?
asked by Pat 
Calculus
Find the area of the bounded region by the graph of x=2y3 and x=y^22y in two ways (i) using x axis as refrence y axis (ii) using y axis as refrence x axis
asked by Akki 
U.S. HISTORY
besides, financial and foreign affairs...what problems did the U.S. face after the war of 1812?
asked by laura 
Chemistry
How much milk at 10.00°C needs to be added to a small 150.0 ml cup of coffee at 95.00 °C to drop the temperature to 90.00°C? Assume coffee and milk have the same specific heat capacity as water: 4.186 J/g °C or 1 cal/ g °C, and they also have the same
asked by Phil 
Business
How much influence do stock holders likely to have over a management of the conglomerate or one of its company?
asked by Chervon 
science
Na2 SO4 + Ca Cl> Ca SO4 +Na Cl
asked by tyler 
biology
Hello, I got this question wrong on a homework assignment and I still can't find the correct answer. The reduction of the chromosome number during meiosis is most important for: 1: keeping the amount of DNA in the cell at a minimum level. 2: allowing the
asked by Tony 
chem
The solution of known concentration to use to evaluate Z was prepared as follows: 2.00mL of 0.00201 M KSCN and 18.0 ml 0.200 M Fe (NO3)3. Assume that all of the SCN has been converted to Fe(SCN)2t in this solution. Fe3+ SCN ==== Fe Fe(SCN)2+ I don't
asked by Steph 
chemistry
The equilibrium concentration of NOCl = {0.0610}, NO = [0.0151, and Cl= [0.0142, what is the value of the equilibrium constant? Don't really get how to figure this out..anyone know? Thanks!!
asked by S 
Math
x^3x^236x+36=0
asked by Lizzy 
Chemistry
Question 2: Use your balanced equation to calculate the volume of 0.12 M Na3PO4 to stoichiometrically react with the 3.0 mL of Co (NO3)2. Show your work. 3) Discuss how your supernatant color in the 6 different test tubes supports your calculated result in
asked by Question 
chemistry
1. Outline how you would use a calorimeter to determine the enthalpy of fusion of ice. 2. Suppose the enthalpy of fusion of ice determined from your experiment is lower than the accepted value. List three possible causes of the difference in value. Explain
asked by Morgan 
chemistry
To interpret and compare heats of reaction (Hrxn), standard states must be used. What are the standard states for a gas, an aqueous solution, and a pure substance? Why are they important?
asked by Morgan 
Chemistry
Calculate the heat of reaction (ΔHrxn) for the following reactions, using heats of formation (ΔHf). Show your work. Refer to a table of heats of formation in your textbook as needed. 5O2(g) + 4NH3(g) → 6H2O(g) + 4NO(g)
asked by Morgan 
LIFE OR
COMPARE FIVE THE WAYS THE SIMILARITIES AND THE DIFFERENCES BTWEEN NFSAS AND OTHER STUDENT IOAN
asked by MARVIN 
Life Orientation
Show the link between intrapersonal conflict and initiating relationship?
asked by Anonymous 
algebra
Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed,
asked by please help me 
Math
Evelyn rolled two 16 cubes 72 times. How many times should she predict she will roll a sum of 5?
asked by Anonymous 
Social Studies
10.Which Piece Of Evidence Supports a Loosening of Islamic Tradition In saudi Arabia? A)The Hijab B) Five Pillars C)Women Politicians D)Prayer Outside The home I Say B) Five pillars
asked by Valerie 
English
1. Which word is antonym of incessant? failing, brief or filthy brief
asked by Hayley 
math
Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed,
asked by Kid with help fast 
soc.
Justice Potter Stewart would most agree with which claim about obscenity
asked by Anonymous 
soc.
The paradox of tolerance leads to which difficulty
asked by Anonymous 
english
The story of a disabled athlete who became well known :narrative story
asked by jacqueline 
soc
Which statement represents a utilitarian viewpoint about the legality of !@#$%^&ography
asked by Anonymous 
Chem
Using the Absorbance (0.455) of your Unknown SCN solution and the slope (3163.9) from your Calibration Curve, calculate the concentration of SCN in the solution created from 5.0 mL 0.200 M Fe(NO3)3, 40.0 mL H2O and 5.0 mL SCN. How would I calculate?
asked by Mark 
physics
A projectile is launched with 30m/s at an angle of 60degree with d horizontal (a) find d position of the projectile,and d magnitude and direction of its velocity at t=2s (b) find d time when d ball reaches the highest point (c) find d horizontal range
asked by tolu 
Accounting
Beginning work in process inventory 17,000 40%. Transferred in from the prior department 72,000. Ending work in process inventory 18,000 30% According to the company records the conversion cost in the beginning work in process inventory was $63.104 at the
asked by Bella 
English
1. Write sentence using obscured and revealed. 2. Sentence using compulsory and optional. 1. Heavy brush had totally obscured the entrance until someone cut away the branches and the entrance was revealed. 2. If your child hasn't met the compulsory
asked by Hayley 
english
A disabled athlete who became well known
asked by jacqueline 
Chemistry combined gas law
Can someone tell me if I did this combined gas law problem correctly? What would happen to the volume of a container whose initial volume is 21.5 L at STP (standard pressure) and is introduced to conditions of 93.2 kPa and 333 K? Formula: P1 x V1 / T1 = P2
asked by Theresa Kwnt 
Phoenix
b(t7)=
asked by Walker 
Life orientation
1.distinguish between interpersonal and intrapersonal conflict? What are six symptoms of inrapersonal conflic?what are the link between intrapersonal conflict and initiating?clarify how intrapersonal conflict can lead to emotional stress?to what extent can
asked by Dimpho 
english
Disabled athlete .I mean their names and what they do
asked by jacqueline 
sociology 120
Justice Potter Stewart would most agree with which claim about obscenity? (Points : 1) It is easy to concretely determine what obscenity is. People can intuitively understand what obscenity is. Obscenity ought to be allowed so long as no one is harmed.
asked by stan 
Algebra
(16x^5*y^10/81xy^2)^(3/4) please explain how to do this, I am at a complete loss
asked by Jake 
History
What does Truman mean when he claims, "Should we fail to aid Greece and Turkey in this fatal hour, the effect will be far reaching to the West, as well as t the East"?
asked by Molly 
Social Studies
What is the Indian Ocean Basin? Is it just a trade route name like the silk roads? Thank you
asked by Deyves 
physics(urgent answer pls)
A projectile is launched with 30m/s at an angle of 60degree with d horizontal (a) find d position of the projectile,and d magnitude and direction of its velocity at t=2s (b) find d time when d ball reaches the highest point (c) find d horizontal range
asked by ben 
science
A sandbag falls from a hot air balloon that is rising with a constant velocity of 15m.s 1)What is the acceleration of the bag the moment it fell from the hot air balloon? 2)What is the acceleration of the hot air balloon the moment the sandbag fell from
asked by PHYSICS 
Math Calculus (ALEVEL)
Find the equation of the tangents to the curve x^2+3x2y^2=4 at the points where the curve crosses the x axis
asked by Anonymous 
Criminal Justice/Probation & Parole
In New York, residential burglary during the day is a/an __________ even in the absence of the possession of a weapon or an encounter with an occupant. A. "instant" offense B. "nonviolent" offense C. "adjudication" offense D. "violent" offense I think
asked by Pat 
mohale
Can you please help me with mathematics I have couple of question that I can't answer and I tried them still cat get the answer can you help?
asked by wisdom 
Chemistry
Answer these questions about NaCl also known as table salt: 1. What is the name of the compound? 2.Are there any other names that it is known by? If yes, then please list them. 3.What is the chemical formula of the compound? Is it an ionic or covalent
asked by Rea 
chemistry
You have 14.0mL of a 0.12M NaOH solution. How many moles of HCl will it take to neutralize this solution?
asked by Savannah 
Math
Hi! Can someone help me with this? Thanks! Directions: Solve this equation by doing it twice; one time using the substitution method and one time using the graphing method. x + 2y = 1 5x – 4y = 23
asked by Lori 
physics
A particle moves half distance by 20 m/s and stay half distance moves by 30 m/s. Average speed of total journey should be?
asked by Pradeep 
physics
A seesaw has a mass of 30 kg, a length of 3.0 m, and fulcrum beneath its midpoint. It is balanced when a 50kg person sits on one end and a 65kg person sits on the other end.Locate the center of mass of the seesaw (a distance from the 50kg person)
asked by clay 
mohale
Kwaito enrolled at university of johannesburg, his family gives him a pocket money that doesn't last for a month. So he decided to work at Ramodumo car wash next to his campus to make extra cash. A car wash agrees to pay him R55.00 per day and extra R10.00
asked by wisdom 
math
write an equation where the perimeter is 64 and the length is 4 less than twice the width
asked by GAA 
Physics
A baseball pitcher delivers a fastball that crosses the plate with an angle of 7.89 degrees relative to the horizontal and a speed of 87.5 mph. The ball (mass 0.145 kg) is hit back over the head of the pitcher at an angle of 38.03 degrees with respect to
asked by Kathy 
english
Guys your source was good can you give another Web to search about Natalie Du toit
asked by jacqueline 
science
a particle 100g attach with a horizontal spring moving s.h.m.with amplitude 5cm .when this particle is passes through mid point a small particle placed on it then both moving s.h.m.with amplitude 4cm.find the mass of small particle .
asked by Jamal 
Math
When adding the square root of 16 and 8 which type of number is the sum? A. Integer B. Irrational number C. Radical D. Whole number
asked by urgent please help 
Math
Pick any single digit number. Multipy it by 12,345,679. Then multiply the result by 9. What happens? Explain why this works.
asked by Erika 
Physical Sciences
A diagram shows a rope and pulley arrangement of a device being used to lift an 800 N object.Assume that the roped are light and inextensible and also that the pulley is light and frictionless.
asked by Simphiwe Nanto 
calculus
Plot three points with first coordinate equal to (2.8) and join them
asked by hadasha 
Chemistry
What is the magnitude of the orbital velocity of the earth when the radius of the earth's orbit around the sun is 150000000?
asked by Flora 
math
A cow is tethered by a piece of rope 50 meters long to the side of a rectangular barn. The rope is fastened to a hook (on the barn) that is located 20 meters from the corner along the longest side of the barn which measures 70 meters by 20 meters. Over how
asked by Zunie 
modern physics
a hunter on the ground fires a bullet in the northeast direction which strikes a deer 0.25 metre away from him, the bullet travel with a speed of 1800m/hr.at the instant an airplane is directly over the hunter at an altitude of one metre and is traveling
asked by martin 
Physics 1
In recent years, scientists have discovered hundreds of planets orbiting other stars. Some of these planets are in orbits that are similar to that of earth, which orbits the sun (Msun = 1.99 × 10^(30) kg) at a distance of 1.50 × 10^(11) m, called 1
asked by Skyler 
math
the flour power bakery makes 200 cherry cheesecakes at a cost of $2.55 each. if a spoilage rate of 3% is anticipated, at what price should the cakes be sold to achieve a 35% markup based on cost?
asked by stephanie 
algebra
A store sold 60 DVDs. Some of these were on sale and sold for $4.95 each, while the rest priced at $5.95 each. If the sales receipts for DVDs at the end of the day totaled $317.00, how many of each type were sold?
asked by emily 
Physics
An unstable nucleus with a mass of 18.0 ✕ 1027 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.1 ✕ 1027 kg, moves along the positive yaxis with a speed of 8.0 ✕ 106 m/s. Another particle, of mass 7.7 ✕
asked by Betty 
Math
Find the first five terms: a sub n = 2^n  5 3, 1, 3, 11, 27?
asked by Anonymous 
Math
find the area in the first quadrant bounded above by y=sinx, below by the xaxis, and to the right by x=pi/2 is divided into two equal parts by the line x=a. Find a.
asked by Jacob 
Math
Find the first 5 terms. a sub 1 = 4 and a sub n = 0.5a (sub n  1) + 1 1.5, 2, 2.5, 3, 3.5
asked by Anonymous 
Calc
Find the area in the first quadrant bounded by the curve y=(9x)^1/2 and the x and yaxis.
asked by Max 
AP Calc
The curve y=x^3 intersects the line y=7x6 at three points, (3,27), (1,1), and (2,8). Find the total area bounded by y=x^3 and y=7x6.
asked by Isaac 
Math
The curves y=sinx and y=cosx intersects twice on the interval (0,2pi). Find the area of the region bounded by the two curves between the points of intersection.
asked by Luke 
Math
Find the volume of the solid generated by rotating the area bounded by y=x^2 and x=y^2 about the xaxis.
asked by Jake 
Algebra 2 Honors
Hi, I'd like some help with one of the questions on my math homework. It has to do with a right triangle. I'm not sure how to set it up or if I should use the pythagorean theorem. This is the question: Vista county is setting aside a large parcel of land
asked by Spectrum 
math
A town N is 340 km due west of town G and town K is west of town N. A helicopter Zebra left G for K at 9.00 a.m. Another helicopter Buffalo left N for K at 11.00 a.m. Helicopter Buffalo traveled at an average speed of 20 km/h faster than Zebra. If both
asked by kudu 
Math
Joe has to coins in his pocket that total $.55 one corn is not a nickel what are the coins
asked by Anonymous 
chemistry
Given the following balanced chemical equation, if 15.4 g AgNO3 are reacted, how many moles of AgCl are produced? 2 AgNO3 + BaCl2 → 2 AgCl + Ba(NO3)2
asked by anna 
Trigonometry
5. A backpacker notes that from a certain point on level ground, the angle of elevation to a point at the top of a tree is 34o. After walking 50 closer to the tree, the backpacker notes that the angle of elevation is 54o. Find the height of the tree.
asked by Marla 
Writing Skills Part 3
1.Under the Library of Congress system,where would you begin to search for books on the legal system of Greece? A.E B.k C.U [D.G] 2.If a source is reasonable,we know A.The information offered uptodate,factual detailed,and precise. [B.We can trust and
asked by Samantha 
Writing  APA
For writing in APA and your table goes on two pages, do you just repeat the table header rows? I already titled the table on the first page.
asked by MJ 
math
Give that x is angle in the first quadrant such that 8sin 2x + 2cosx – 5 = 0 Find: cosx tanx
asked by kudu 
math
a traffic sign casts a shadow 6ft long while a mailbox next to it casts a shadow 3ft long. if the traffic sin is 7 ft high how tall is the mailbox
asked by Jill 
law/521
doing paper on breach of data from target I don't understand the legal concepts that applied within a business managerial setting I know about the target part but not the rest
asked by A 
Chemistry
Use your balanced equation to calculate the volume of 0.12 M Na3PO4 to stoichiometrically react with the 3.0 mL of Co (NO3)2. Show your work.
asked by Chem 
Impulse and Momentum
A 1400kg car traveling east at 25m/s collides with a 1800kg car traveling at a speed of 20m/s in a direction that makes angle of 40degree south of west. The cars stick together after the collision. What is the magnitude and direction of the velocity of
asked by Jennifer 
Math
Winona needs to average 5.8 points from 14 judges to win the competition. The mean score of 13 judges was 5.9. What is the lowest score she can receive from the fourteenth judge and still win? I have no idea. Please help. Thanks
asked by Alexandria 
Chemistry
Discuss how your supernatant color in the 6 different test tubes supports your calculated result in #2. For example, if you used less than the volume of sodium phosphate calculated in #2, what would be the limiting reactant and does the observed
asked by Chem 
Statistics
How many different 9 letter code words can be made using the symbols %%%% &&& ++
asked by Anonymous 
math
solve (1+x)^2d^y/dx^2+(1+x)dy/dx+y=4cosh(x+1)
asked by assma 
Math
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 125 and a variance of 25. The material is considered defective if the breaking strength is less than 113.5 pounds. What is the probability that a single,
asked by Denise 
algebra
Jorge is painting a rectangular mural. Its length is 2 ft less than twice its width. Its area is 264 ft2. Find the dimensions of the mural.
asked by someone 
Physics
A model helicopter and its load have a combined mass of 3.5 kg. Find the upward average force, in Newtons, exerted by the air if the helicopter is originally moving downward at 10 m/s and is brought to rest with constant acceleration in a distance of 50 m.
asked by wayne 
physics
A bug starts walking away from the top of a spherical ball of ice and will start to slip when the normal force exerted on it drops to 1/2 of its weight. If the ice ball has a diameter of 34 cm, how far can the bug walk before it begins to slip?
asked by wayne 
English
Did I do this correctly for realism in A Raisin in the Sun? 1. Walter : "A job. (Looks at her) Mama, a job? I open and close doors all day long. I drive a man around in his limousine and I say "Yes, sir; no sir ; very good sir; shall I take the Drive, sir
asked by Notafanofschool 
chemistry
What is the ph of 0.25 M tartaric acid? Ka=2.5*10^5M
asked by brad 
CHemistry
What is the pH of the resulting solution when 0.20 mole of NaF and 0.05 mole HCl are added to 100 mL water? The Ka for HF is 3.95x10^4M
asked by Mike 
gen chem
What is the ph of a soulution made by adding 0.20 mole NH3(aq) to 0.30 mole NH4Cl and 0.10 mole KOH to 100ml of water? Kb for NH3 (aq)=1.8x10^5M
asked by nick 
math
there are 3 numbers, a,b and c. the sum of a and b is 15.31 , the sum of b and c is 9.54,and the sum of a and c is 5.15. find the sum of a,b and c.
asked by vic 
international business
If a country only exported products/services, would this be a good or bad thing?and vice versa?
asked by rimsha 
statistics
The life spans of three randomly selected tires are 28,100 miles, 37,900 miles, and 33,000 miles. Using the empirical rule, find the percentile that corresponds to each life span.
asked by Anonymous 
Geometry
Write the equation of a circle given the following: Diameter measures 15 units and the center is at the intersection of y =x + 7 and y= 2x5
asked by Frank 
Organic Chemistry
How to find the crude percent, percent recovery, and percent composition of benzoic acid and acetanilide if 2 grams of a mixture of benzoic acid and acetanilide was separated through separatory funnel and recrystallize and purified, but only 0.7g of
asked by Siannah 
physics
Why do you think the wave aspect of light was discovered earlier than its particle aspect?
asked by Channing 
health
true or false. B cells and H cells are two important cells in the immune system that help fight infection i thinks its false The three lines of defense your body has against disease include all except A. physical and chemical defense B. inflammation C.
asked by anonymous 
Business
Human Resource Essay?
asked by selokela monyeki 
statistics
Suppose for the same 3000 women, we also measured their weight. Suppose the data were again normally distributed. The average weight is 143 lbs., and the standard deviation is 30 lbs. Suppose the correlation between height and weight is r = +.69. What is
asked by marie 
math
P (5,) and Q (1, 2) are points on a straight line. Find the equation of the perpendicular bisector of PQ: y = mx+c
asked by kudu 
english
What are the values (negative) being taught in this advertisement? The advertisement is trying to sell a military style watch. In the advertisement there are two armed soldiers in the background and appear to be situated in a war zone area. I am able to
asked by Marcus 
English
What are the values (negative) being taught in this advertisement? The advertisement is trying to sell a military style watch. In the advertisement there are two armed soldiers in the background and appear to be situated in a war zone area. I am able to
asked by Marcus 
life orientation
To what the extent can inttrapesonal conflict affect communication in arelationship, choice of career and job performance when employed
asked by kgeko 
Calculus
(1/sqrt(1(3x/4)^2) * 3/4
asked by Sandra 
math
16000000=10rr^2. Calculate the maximum value of r.
asked by vizzy 
Statistics/check answer
If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are selected? Show all work. standard error of the mean = 0/sqrt(n) = 18.2/sqrt(25) = 18.2/5 =3.64 Answer 3.64
asked by slomomo 
Mathematics
An isosceles triangles, such that the vertical angle is 4times the size of the base angle.what is the size of the base angle with illustration
asked by Tina 
accounting
Shastri Bicycle of Bombay, India, produces an inexpensive, yet rugged, bicycle for use on the city’s crowded streets that it sells for 767 rupees. (Indian currency is denominated in rupees, denoted by R.) Selected data for the company’s operations last
asked by Anonymous 
Life orientation.
What extent can intrapersonal conflict affect choice of a career.
asked by Koketso 
chemistry
What volume of ammonia gas at STP is required to neutralize 40 cubic centimetres of 2 Molar sulphuric acid?
asked by Czar 
Chemistry
When 50.00 mL of an acid with a concentration of 0.214 M (for which pKa = 4.87) is titrated with 0.100 M NaOH, what is the pH at the equivalence point?
asked by Anonymous 
Geometry
A survey showed that 23 % of college students read newspapers on a regular basis and that 82 % of college students regularly watch the news on TV. The survey also showed that 21 % of college students both follow TV news regularly and read newspapers
asked by Anonymous 
tablun elementary school
the side of a square is 7x  8y cm. what isthe area?
asked by althea 
Physics
What is the final temperature reached by the addition of 11.4 grams of steam at 100C to 681 grams water at 25C in an aluminum calorimeter having a mass of 781 grams? C of water=1 cal/gc C of aluminum= 0.22 cal/gc L steam= 540cal/g My Attempt Qloss=Qgain
asked by Help2 
math
If you 99 lines on a piece of paper so that no two lines are parallel to each other and no three lines pass through the same point, how many times will they intersect?. Show all your calculations leading to the answer
asked by thabang 
Math
A Major League Baseball team has won 15 of its first 27 games. The team will play 162 games. At its current rate of winning, how many games will the team win?
asked by Sonic 
Health
health status of the Philippines??
asked by Anonymous