Questions Asked on
February 23, 2012

Stats
a coin is tossed twice, or until the first "tails" appears, whichever comes first. which of the following is the sample space for this random experiment? A, !@#$%^&) B. S=(T, HT, HH) C. S=(T, TT)
asked by Justin 
micro
hi, i need some help with my econ homework. i know what the law is, basically that more isn't always better. i just need to know how to tell if it applies to a labor equation. my problem goes like this. !@#$%^&,L) = K + 10L, write expressions for marginal
asked by saya 
Geometr
Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,9)c(1,5)ana(2,3)
asked by Mathes 
Geometr
Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,9)c(1,5)ana(2,3)
asked by Mathes 
geometry
Find the lateral area of a right triangular prism with an equilateralbase length of 5cm and height of 10cm.
asked by Piggy 
geometry
The base of a pyramid is a square. The perimeter of the base is 20ft, and the surface area of the pyramid is 65ft^2. Find the slant height of the pyramid.
asked by Piggy 
geometry
Find the ratio of surface area to volume for a cube with a volume of 64 in^3.
asked by Piggy 
RecheckEssay
By studying in the USA, I believe that I am not only getting an internationally recognized education, but also a thrifty one. My decision to study here will help me become independent. In addition, the money I save by studying here will eventually help me
asked by Hero 
Physics
A 0.168kg hockey puck slides at 11.4m/s. what is the work needed to stop the puck?
asked by Sheetal 
physics
A 50 gram ball enters a a pendulum with mass 200 g. The pair then swings up to a height of 10 cm. Find the velocity at which the pair move immediately after the collision. Your answer is incorrect. 1.4 m/s Find the initial velocity of the ball before the
asked by brett 
physics
A spring S of force constant k=100 N/m. is fixed to the base of a 30 degree incline.A mass m=50g. is held against the free end of the spring,so that the spring is compressed by 0.1 metre.If the mass is now released,calculate the distance travelled by the
asked by anil jha 
math
i have 30 coins made up of 5c and 20c pieces that total $3.45. how many of each do i have?????
asked by maria 
english
One of your aliens looks down and becomes very confused, so you tell him that there is a game going on
asked by luke 
english
Critical thinking: alien tour guide
asked by luke 
physics
A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.
asked by anurag 
physics
A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.
asked by anurag 
physics
A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.How far will a body move in 2 seconds
asked by anurag 
physics
A force of a 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.How far will the body move in 2 seconds ?
asked by Anurag 
calculus
Evaluate the integral S x/(sqrt(3x1))dx Use USubstitution method.
asked by John 
science
balance H3PO4 plus KOH produce K2HPO4 plus H20 and give the name of it
asked by roxie 
chemistry
A hydrocarbon,in volume of 25 L at 400K and a pressure of 3.40 atm reacts in an excess of oxygen to give 47.4G and 231.6g CO2.Determine the molecular formula for the compound?
asked by Silvester 
computer science
Class scores: Write a program that calculates the total grade for N classroom exercises as a percentage. The user should input the value for N followed by each of the N scores and totals. Calculate the overall percentage (sum of the total points earned
asked by Abby 
programming
Ancient square root algorithm. The Babylonian algorithm to compute the square root of a number n is as follows: 1. Make a guess at the answer (you can pick n/2 as your initial guess). 2. Compute r = n / guess 3. Set guess =
asked by aymee 
writting a program
Speed of Sound. Sound travels through air as a result of collisions between the molecules in the air. The temperature of the air affects the speed of the molecules, which in turn affects the speed of sound. The velocity of sound in dry air can be
asked by sarah 
math
The ratio of zinc and copper in an alloy is 7:9. if the weight of copper in the alloy is 11.7 kg, find the weight of zinc in alloy?
asked by swagnik 
math
find x in each of the followig. 1)12:x= x:48 2)12:21::8:x Q2)find the mean proportional between: 1)12 and 27 2) 5 and 45 3) 4 and 9
asked by swagnik 
Bio II AP
Do you guys know of any online study guides about joints that I could print out? Thanks
asked by Rebekah 
math
construct an equilateral triangle ABC in which altitude drawn from opposite vertex is 3.5 cm.Also construct a triangle APR similar to a triangle such that each side of the triangle APR is 1.5 times that of the corresponding side of triangle ABC.
asked by upasna 
Math solid mensurations
rhombus ABCD has diagonals that intersect at E. DF is drawn perpendicular to DC and AD at D. With AB = 10cm,
asked by Anonymous 
physics
A speeder traveling at 38 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.03 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?
asked by Anonymous 
algebra
The sum of an uncirculated 'Mint65 '1950 jefferson nickkle mintedd in Denver is 4/3 the value of a 1945 nickle minted in philadephia in similar condition. Togather the total of two coinsis$35. What is the value of each coin?
asked by debbie 
physics
A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?
asked by Anonymous 
american goverment
One function that both the House and Senate share is to? . Somebody can tell me where can I found this?? Thanks
asked by lalt 
Maths
Karen took 1hour 45mins to drive from Town A to Town B. She took another 25 mins drive from Town B to Town C. After that, she drove back to Town A. The journey from Town A to Town C and then back to Town A took 3h and 3mins. Find the percentage of time she
asked by billygoatman 
physics
A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?
asked by Anonymous 
Psychology
Sally is driving her car and talking on her cell phone. Statistically this behavior has been shown to be quite dangerous and contributes to many automobile accidents. In performing these two tasks simultaneously, Sally uses: a. conscious cognitive
asked by Oronde 
psychology
Henry is an avid animal lover. He always takes in strays and donates his local animal shelter. One night he goes to an Atlanta Braves baseball game where hundreds of people are walking past the hotdog vendors. Henry sees a young, pregnant homeless,
asked by Oronde 
american goverment
The system of checks and balances allows the Supreme Court to A. veto legislation passed in Congress. B. nominate candidates for congressional seats. C. declare acts of the president unconstitutional. D. select judges to serve in the federal court system.
asked by lalt 
psychology
A worker who recently switched from day to swing shift has become less efficient and more irritable. He is also making more mistakes than he did on the day shift. The cause of this worker's problem is likely to be: a. sleep disorders due to change in shift
asked by Terry 
psychology
Activationsynthesis dream theory purports that dreams rersult from the brain's effort to make sense of: a. the day's activities and experiences b. problems the person has not yet tresolved c. our external world d. spontaneously firing neurons during REM
asked by Terry 
math
I need help solve the equation by fractions 8/(21y) = 12/(y+19) I think the answer is y = 5, i just need to know how to do work out. i done some solution like this first multiply by(21y)(y+19)(assuming that y = 21 and y = 19: (21y)(y+19)8/(21y) =
asked by Anonymous 
maths
the radius of a circle is 8cm and the length of one of its chords is 12cm. find the distance of the chord from the centre
asked by sushma 
accounting
Your review of the general ledger of Home Interior Improvements and Designs Company reveals a beginning capital balance of $25,000. You also review the general journal for the accounting period and find the closing entries shown on the next page.Prepare a
asked by Colleen 
accounting
Wilson Reed, the bookkeeper for Home Interior Improvements and Designs Company, has just finished posting the closing entries for the year to the ledger. He is concerned about the following balances: Capital account balance in the general ledger: $ 48,550
asked by Colleen 
trig
sin(x) = 8/17 and 90 degrees < x < 180 degrees then find cos2(x)
asked by Harley 
life orientation
substance abuse of both legal and illegal drugs among the youth
asked by ntshembo 
chemistry
What mass of potassium nitrate would you have to heat in order to produce 1.00dm of oxygen at rtp?
asked by Nicole 
Chemistry
When 3.2 moles of Al react with excess HNO3 at STP, How many liters of H2 are formed
asked by Amber 
English LitCheck pleasethank you
We're reading "The World is Too Much with Us by Wordsworth. We have some questions to interpretI understand about Wordsworth and his relationship and philosophy concerning nature but I'm just not sure after further research the answer to these two
asked by Thomas S. 
Geology
I don't really understand this queston...Why Al ore producing and Al metal producing countries are often not the same?... thanks..
asked by Rose 
Maths
Dear Genius, Good day! The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of
asked by Surya 
physicsplease help
When only the front wheels of an automobile are on a platform scale, the scale balances at 7.8 kN; when only the rear wheels are on the scale, it balances at 5.5 kN. What is the weight of the automobile? How far is its center of mass behind the front axle?
asked by sara 
Maths
The Sentosa High School's telephone number is an eight digit number. The sum of the two numbers formed from the first three digits and the last five digits respectively 66558. The sum of two numbers formed from the first five digits and the last three
asked by Surya 
English Comp
I need help on how to write a compare and contrast essay on the topic of preschool
asked by Anonymous 
physics
An object that has kinetic energy must have which of the following?A) momentumB)acceleration c all of these d none of these
asked by britches 
Calculus
find f'(x) if f(x)=x^2e^(x(3x1)^3
asked by Johnathan 
Calculus
find f'(x) if f(x)= (cosx)^sinx
asked by angie 
Macroeconomic
Suppose we establish a $10,000 fine for water pollution. Would some companies still find that pollution was economical? Under what conditions?
asked by Karen 
math
Which set of dimensions would produce a right triangle?
asked by megna 
maths
multiply out (2x3) squared eg small 2
asked by sarah 
trig
does sec(x)tan(x)*tan(x)=[sec(x)(tan^2)x]
asked by Drew 
English Comp
Compare and Contrast Essay for Preschool Preschool (PreK) and Kindergarten, on an equal level; when it comes to the educational standards of teaching. Preschool allows student an opportunity for additional educational preparations, so that the first
asked by Anonymous 
chemistry
i need to prepare 25.00 mL of a solution of a certain vitamin at a concentration of 2.00 mg/ml. how do i find the weight of the vitamin needed in the solution
asked by marla 
Math
Create a graph from this research In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading.
asked by Linda 
Physical Education
1. Aerobic activities can be done for an extended period of time and supply oxygen to your muscles. Such activities help develop _______________________. 2. You can change your _______________________ by exercising regularly and eating healthfully. 3. The
asked by Maddie 
Physical Science: PLEASE HELP!!!!!
A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft itself has a mass of 600 kg, how many 65kg people could it support?
asked by Kendra 
Chemistry
An atmospheric scientist interested in how NO is converted into NO2 in urban atmospheres carries out two experiments to measure the rate of this reaction. The data are tabulated below. A: [NO]0 = 9.63 × 103 M, [O2]0 = 4.1 × 104 M t(s)
asked by help 
math
find the percent of decrease. round to the nearest tenth if necessary from 49 cm to 34 cm
asked by jasmine 
English
Writeacher, Can you please check these sentences. I urgently need to know the difference in meaning among the various sentences. 1) She often makes herself pasta. (= She often makes pasta for herself) She often makes pasta herself. (= She often makes pasta
asked by Henry2 
scientist
What is the kinestic energy of a bullet of 22kg fire from a gun with a speed of 6m`s
asked by Bright 
COMM215
Can you tell me if everything is correct? Final Grammar Test Part I: True or False 1. The following word group is a FRAGMENT: That movie, one of my favorites. _X_True __False 2. The following word group is a FRAGMENT: The local baseball team, needing a
asked by Al 
reading skills
) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventhgrade science, I have some experience with the faces
asked by Shatavia 
Math
Pls help .[1] Solve the eguation 4*=28. [2] change 1/20 to decimal [3] change 60% to a common fraction . Pls i need the solving thank you
asked by Bright 
algorithms
in Table E [N] are the names of the students, in Table L [M] are the names of the subjects, in Table T [N, M] are the grades of students for each subject. to find the student with the highest grade in the class "Math" (name of the subject given by keypad)
asked by Elton Xhafa 
American History
Which of the following was John Rolfe's chief contribution to Virginia's economy A. His alliance with the Powhatan through his marriage to Pocahontas B. His invention of a better way to grow shortstaple cotton C. His innovations in cultivating tobacco D.
asked by Jaz 
tax intro
Jeanette owns a rental property that she used for 20 days and rented for 80 days. The rental income was $10,000 and expenses included the following; mortgage interest $2,500; property tax $1,500; insurance and repairs $1,000 and depreciation $2,000.
asked by Andy 
Algebra
A club with 35 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many ways can this be done?
asked by Matt 
chemistry
3. Answer the following questions: For each question show a balanced chemical equation and show all calculation for full credit. a. Assume that you had 100 nuts (N) and 75 bolts (B). How many NB molecules could you make by screwing one nut onto each bolt?
asked by Josh 
statistics
A secretary can type 12 names per 60 secods in an average classroom how long will it take her to type all the names
asked by Natasha 
statistics
Microfracture knee surgery has a 75% chance of success on patients with degenerative knees. The surgery is performed on 5 patients. Find the probability of the surgery being successful on 3 or 4 patients?
asked by Anonymous 
algebra
6) Write with positive exponents: [ 33 a2 b5 c3 d4]
asked by lee 
algebra
6) Write with positive exponents: [ 33 a2 b5 c3 d4]
asked by lee 
Chemistry
Ag+2 is generated in a lab. This is an unusual oxidation state for AG. Write the ground state electronic configuration of Ag+2 using the noble gas shortcut.
asked by Drake 
Chemistry
There is a large [Cr2O7]2 absorbance observed at 360 nm. Why can this wavelength not be used instead of the smaller absorbance at 440 nm?
asked by ella 
Western Civilization
How did the intellectual theories of Charles Darwin, Karl Marx, Sigmund Freud and others signal a revolution in modern thought?
asked by Adam 
chemistry
One purpose of adding KIO4 is to prevent the permanganate ion from being slowly reduced to Mn+2 by H2O. Write a balanced redox equation for the reduction of permanganate ion to Mn+2 by water in acid solution.
asked by ella 
Chemistry
If 30% of a sample of radioactive isotope decays in 24 hrs, what is the halflife? How do i know which order to use? and do I convert hr to mins or seconds? Pls help for my exam tomorrrow
asked by tina 
Proof! Help!
If k vertices has kC2 edges, show that (k+1) vertices has (k+1) C 2 edges
asked by Samantha 
math
I have 432 cards that are three and a half inches long if I put them end to end how many feet long is the line of cards
asked by Emily 
PHYSICS
A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of
asked by GRISSELL 
PHYSICS
Consider a spring and block system k= 18 N/m x initial = o m x final = 0.08m Useing Hooke's law to calculate the force needed to stretch this spring 8 cm.
asked by GRISSELL 
Algebra: Help Please
For the given function, compute the missing values in the following table. f(x) = 8x i got the negatives wrong, but I know how to solve for it. Is there a reason it is wrong? 3: 1/512 2: 1/64 1: 1/8 (^These were wrong, but I don't know how to solve
asked by Ann 
calculus
Find an explicit expression for y' for the curve de fined by 3(x^2 + y^2)^2 = 100xy.
asked by sarah 
calculus
You operate a bakery. You buy cakes from a supplier who charges you $5 per cake. Government regulations dictate that you can only charge a price between $10 and $20 per cake. Your research shows that if you were to charge $x per cake, you would sell 125 
asked by sarah 
calculus
How many horizontal tangent lines exit to the curve f(x) = x^cos(x)?
asked by sarah 
physics
What is the rotational speed of the minute hand on a clock? Convert from rad/s to rev/s
asked by brett 
Math/Conics
Find the vertex and focus of the parabola with the following equation: y = x2 + 6x + 5
asked by tori 
Math/Conics
Find the center, vertices, and foci of the ellipse with the following equation: x^2/9+y^2/16=1
asked by tori 
math
Tania is in charge of designing a school pennant for spirit week. She wants the base to be 3 1/2 feet and the height to be 6 1/2 feet. She has 20 square feet of paper available. Does she have enough paper? Explain.
asked by Maria 
physics ( please help me)
a block with a mass of 5.00 kg is moving at 8.00 m/s^1 along a frictionless horizonal surface toward a spring with force constant k= 500 N/m^1 that is attached to a wall.find the maximum distance the spring is compressed. the spring has negligible mass.
asked by taylor 
early childhood
evolutionary psychology and behavior genetics: watson
asked by jen 
physics ( please help me)
A 2.00kg block is pushed against a spring with force constant k=400N(m^1), compressing it 0.180m. The block is then released and moves along a frictionless horizontal surface and then up frictionless incline with slope angle 37.0degrees. a. What is the
asked by taylor 
chemistry
How much HCL would be needed to neutralize 250mL of 6 M NaOH (HCL = 1.5 M)?
asked by Rachel 
physics ( please help me)
A brick with a mass of 0.400kg is pressed against a vertical spring with force constant k=500 N(m^1) such that the spring is compressed 0.200m. When the brick is released, how high does it rise from this position? (the brick and the spring are not
asked by taylor 
Physics help please!!!
Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars
asked by john 
help
Jeanette owns a rental property that she used for 20 days and rented for 80 days. The rental income was $10,000 and expenses included the following; mortgage interest $2,500; property tax $1,500; insurance and repairs $1,000 and depreciation $2,000.
asked by Andy 
physics
A man pushes on a piano with mass 200 {\rm kg} so that it slides at constant velocity down a ramp that is inclined at 10.5^\circ above the horizontal floor. Neglect any friction acting on the piano.
asked by lkn 
physics
Two point charges, q1 and q2, are placed 0.30 m apart on the xaxis, as shown in the figure above. Charge q1 has a value of –3.0 x 10–9 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of
asked by Kayberlynn 
geometry
A piece of board 8yd by 6yd is cut into squares.The perimeter of each square is 8yd.How many squares are there?
asked by Clemence 
Economics
B. Suppose there are two goods, Cloth and Food, and two factors of production, labour and capital. Suppose that the production function for each good is "homothetic". Put capital K in the vertical axis and labour L in the horizontal axis. For Cloth
asked by John 
math
order from least to greatest 41.2 41.42 40.12
asked by ciara 
Anatomy
I need a site that has a labled picture of what parts are found in the knee joint when disecting a fetal pig
asked by Sam 
math
2 thirds of 60 is greater than 1 thirds of 120? True or false and explain your reasoning. :) Thank you, Bella Yang
asked by Bella 
bio II anatomy
Do you guys know of any websites where they have a fetal pigs (or just a pigs) knee disected and labled???
asked by Rebekah 
physics
Cliff and Will are carrying a uniform 2.0m board of mass 69kg. Will is supporting the board at the end while cliff is 0.6m from the other end as shown in the following figure. Cliff has attached his lunch to his end of the board, and the tension in the
asked by brett 
English
Could you please check these phrasal verbs i'm unsure of? thank you. 1) They are cutting off the water/gas supply tomorrow. The chairman cut him out of the discussion. 2) The light went off (out is possible?) all of a sudden. Can you switch off /put out
asked by Henry2 
Math
1 fourths of 32 = 1 over 2 of 16? True or false? and explain.
asked by Bella 
algebra 1
how do i write 9.8 multiplied by 10 to the forth power into standard notation
asked by ikiya 
Physics
Givent the initial velocity of the car, the driver's reaction time, and the coefficient of friction,find the total distance required far a car to stop.
asked by TC 
math
if a man walked 1/12th of a mile one day 2/12ths of a mile the next day and 3/12ths of a mile the next day on what day did he walk a complete mile
asked by dave 
science
List three thing that make friction?
asked by Bella 
Computer Programming (XML)
Using the employees.xml file below, create a DTD file â€œemployee.dtdâ€ based on â€œemployees.xmlâ€. Create a schema files â€œemployee.xsdâ€ based on â€œemployees.xmlâ€. Create a html page â€œemployees.htmlâ€
asked by Lisa 
science
True or false: You can see friction?
asked by Bella 
science
What two things do you need to know to find an objects velocity?
asked by Bella 
science
True or false: Everything that moves has velocity?
asked by Bella 
science
a *blank* is a tool that measure speed in an vehicle.
asked by Bella 
Math
If a recipe calls for 6 cups of juice for each of the eight punch bowls, how many gallons of juice will be needed?
asked by Astrid 
English
I am looking for the dependent clauses in this sentence. 1. Because nests of baby dinosaurs have been found, scientists believe that these ancient creatures cared for their young for some time. Scientists believe is the independent clause. Are the other
asked by Kelley 
English LitWriteteacher please check if possible
I really appreciate you helping me earlier today but I have another poem by WordsworthTintern Abbey 1.According to these lines, compared to his youth, Wordsworth see himself now as: a.More responsible b.Less happy c.More aware of the world's problems
asked by Thomas S. 
Physics
Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars
asked by john 
Math help needed
How many capsules , each containing 250mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 lbs?
asked by Vicki 
college alg
A meat market has ground beef that is 40% fat and extra lean ground beef that is 15% fat. How many pounds of each(ground beef and extra lean) must be together to get total of 50 pounds of "lean" ground beef that is 25% fat?
asked by mercy 
CHEMISTRY
The following reaction represents the decomposition of hydrogen peroxide: Balanced equation: 2H2O2 > O2 + 2H2O How many moles of oxygen are produced from the decomposition of 3.4g of hydrogen peroxide? How many molecules of O2 are produced? For the second
asked by Emma 
English
How should this be written to correct the dangling modifier? The cost of production can be reduced by purchasing an ultrapure water system.
asked by Mariah 
algebra
A shipping clerk wishes to determine the weights of each of the 4 boxes. Each box weighs a different integer amount less than 70 kg. Unfortunately, the only scales available measure weights in excess of 70 kg. The clerk therefore decides to weigh the boxes
asked by Jackie 
Geometry
True or False: An angle of depression can never be more than 90˚.
asked by Clare 
Geometry
Marion is observing the launch of a space shuttle from the command center. When she first sees the shuttle, the angle of elevation to it is 16°. Later, the angle of elevation is 74°. If the command center is 1 mi from the launch pad, how far did the
asked by Clare 
math
a student misses 2 days of school out of 25 days. what is the probability that the student will be absent on the 26th day of school
asked by faith 
Physics
Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?
asked by Charles 
math
The table shows the total number of emails that the Wright family received this morning. Mr.Wright 7 emails Mrs.Wright 8 emails Cole 3 emails Trinity 3 emails If the family receives 7 more emails,which is the most reasonable prediction of the number of
asked by Andrew 
Algebra
There are 37 students in an algebra class. there are 9 more girls than boys. how many boys and how many girls are in the class? I have to use systems of equations to solve.
asked by Jennifer 
physics
5. An object that has kinetic energy must have ____________________. A) momentum. B) acceleration. C) a force applied to it. D) All of these. E) None of these.
asked by britches 
College Physics
The lines in a grating are uniformly spaced at 1530 nm. Calculate the angular separation of the second order bright fringes between light of wavelength 600nm and 603.11nm. Answer in __mrad
asked by Annie 
College Physics
A Fraunhofer diffration pattern is produced on a screen 210cm from a single slit. The distance from the center of the central maximum to the firstorder maximum is 7560 times the wavelength (lambda). Calculate slit width. Answer in __m
asked by Annie 
math
Cierra arrived at her dance at 9:05. She waited in the classroom for 10 minutes and them the class began. If the class ended 1 hour 10 minutes later,at what time did the class end? A.10:15 B.10:20 C.10:25 D.10:30 C?
asked by Andrew 
Math
x+y=20 x=y4 Please help me solve each system of equations and show your work thanks
asked by Haylie 
math
The triangle above has side lengths of 18 mm and 26 mm. Which set of dimensions would produce a similar figure?
asked by Anonymous 
English
Writeacher, could you please check my post, I need to prepare for tomorrow? Thank you!! Could you please check these phrasal verbs i'm unsure of? thank you. 1) They are cutting off the water/gas supply tomorrow. The chairman cut him out of the discussion.
asked by Henry2 
physics
Part A A 3.00 kgblob of putty moving at 2.4 m/s slams into a 4.80 kg blob of putty at rest. Calculate the speed of the two stucktogether blobs of putty immediately after colliding.
asked by britches 
college algebra
given f(x)=4x5, g(x)= x+5 over 4 Find (fog)(x). are these inverse functions?
asked by missy 
math
a deck surrounds a pool and the deck area is 592 square meters and deck width is 4 m. the pool dimension =(w + 4)(w + 14) l = w+10. what does w =?
asked by lynn 
college algebra
Find the maximum or minimum for f(x)=3x^2+x+1
asked by missy 
computers
a file with the extension of .bmp is an audio file? true or false? I say true
asked by Elizabeth 
physics
Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200N load a distance of ____________________. A) 1 meter. B) 0.5 meter. C) 0.25 meter. D) None of these.
asked by britches 
prealgebra
what is the answer to 9*1000 + 1890
asked by vick 
chemistry
A Solute That Removes Hydrogen Ions from Solution
asked by ivy 
prealgebra
When designing a pattern, Erica rotated a triangle 90 degrees about the midpoint of one side to create a second triangle. If the area of the original triangle is 48 square inches, what is the area of the second triangle?
asked by Lola 
math
The ratio of children to adults in a group is 2 to 5. There are 42 people in the group. How many people in the group are children?
asked by Denise 
English
Will just taking out the "it" make this sentence correct? The disease is typified by a delay in motor development, by selfdestructive behavior, and it leads to death.
asked by Mariah 
physics
In the reaction U gives Th + He 6.88*1013 J energy are released as the kinetic energies of the products. If the ratios of the masses Th to He is 2.4:4 find the kinetic energy of the alpha particle
asked by eva 
principles of physics
Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200N load a distance of ____________________. A) 1 meter. Feedback: Incorrect! B) 0.5 meter. C) 0.25 meter. D) None of these.
asked by jim 
Physics
In the reaction U gives Th + He 6.88*1013 J energy are released as the kinetic energies of the products. If the ratios of the masses Th to He is 234:4 find the kinetic energy of the alpha particle
asked by eva 
physics
A professor drives off with his car (mass 800 kg), but forgot to take his coffee mug (mass 0.35 kg) off the roof. The coefficient of static friction between the mug and the roof is 1.1, and the coefficient of kinetic friction is 0.5. What is the maximum
asked by Luke 
Algebra 1
What is the entire balanced owed for a loan of $750 at a simple interest rate of 4% per year for 1.5 years? I just don't really know if the $750 is the interest or principle...
asked by Dayana 
college algebra
Find the vertex for f(x)=5x^26x=3
asked by melissa 
math
Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?
asked by mercy 
physics
A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.450, respectively. (a) What horizontal pushing force is required to just start the crate moving?
asked by dee 
math
two less than three times a number is equal to 16. what is the number?
asked by taylor 
math
the picnic committee dicided that the charge for this year's fundraiser picnic is $10 per family puls %2 for each person in the family. determine the number of people in a family that pays $36?
asked by taylor 
Chemistry
If a hydrate was found to contain 12% water and the original weight of the sample was 30g, what will be the final weight of the anhydrous sample?
asked by Ashley 
English
Does Victor have an obligation to the monster? Use evidence from Chapters 914 of Volume 2.
asked by Katie 
7th Grade Math
You are pouring water from a cylindrical can is 7 cm in diameter and 10 cm high into a rectangular pan that is 20 cm in width, 9 cm in length and 14 cm deep. How many cans, can you pour into the pan? Use 22/7 for pi.
asked by Erikka 
READING
UNDERLINE THE VERB OR VERB GROUP IN EACH SENTENCE. THEN WRITE A NEW SENTENCE USING THE VERB OR VERB GROUP YOU UNDERLINED. BRAN, A THIN BROWN SKIN, COVERS RICE. I KNOW (COVERS) IS SUPPOSED TO BE UNDERLINED, BUT I DON'T GET WHAT IT MEANS WHEN IT SAYS "THEN
asked by Celest 
Math
Katie is 3/5 of the way to Brianna's house. Larry is 7/10 of the way to Brianna's house. How much closer to Brianna's house is Larry?
asked by Heaven 
math
jeremy has 19 coins of 2 different values. the total value of coins is 1$ what are the coins and how many of each coins does he have
asked by sam 
math
this years funderaiser picnc is $10 per person plus $2 for each person in the family. determine the number of people in a family that pays $36?
asked by taylor 
math
the mason family went to the amusement park. they spent 56.00$ on tickets. if adults cost 12$ and kids cost 5$ how many adults and children went to the park?
asked by jazzlyn 
math
people flock to andys lemonade stand because each cup of lemonade is only 35 cents. sometimes customers buy several cups of lemonade.Andy and his helpers have to figure out how much to charge each time someone buys more than 1 cup of lemonade. what could
asked by skye 
geometry
if a painting has a perimeter of 36 in, and the length of the picture is 8 inches. then what is the width?
asked by john 
math
If there is an square 8 by 8, how many 4 sq ft tiles would i need?
asked by nevaeh 
Math
can x squared  1 be factored?
asked by LA 
math
12d  9= 15d+9
asked by Jamel 
to Ms.Sue
Thank you so much. I bet when I'm in college I will still need your help!
asked by Celest 
English
Correct this: The virus may cause AIDS, cancer, or even kill. Do I need to add a word in front of cancer? Would this be correct? The virus may cause AIDS, produce cancer, or even kill.
asked by Mariah 
PHYSICS
A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of
asked by GRISSELL 
PHYSICS
A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. Thank you
asked by GRISSELL 
math
write a problem you could represent with 3n7=14.
asked by taylor 
PHYSICS
a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine?
asked by GRISSELL 
Easy 4th Grade Math
What are things that have symmetry in a house?
asked by Kristiana 
calculus
I'm trying to find the intersection point of y=x2 and y=sqrt(x). I tried letting both equations equal each other but kept coming up with the points (4,1) and (1,4) however these aren't right as the answer should be (4,2) but I am unable to get this
asked by Lindsay 
English
This sentence contains a dangling modifier. As a Principal Technical Editor/Writer for Alpha Communications, with over 12 years of experience, the internship would provide an opportunity to work with technical documents outside my familiar "comfort zone"
asked by Mariah 
AJ
How do the three susytems law enforcemnt, cout, and corrections interact with each other?
asked by Nancy 
math
(4m20)(7m)/(5m25)(28)
asked by josh 
AP CHEMISTRY
Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere. A) bis(bipyridyl)cadmium(II) chloride B) potassium tetrabromo(orthophenanthroline) cobaltate(III)
asked by JIM 
ChemHelp
Chem Help! Limiting and excess reagent? Identify the limiting and excess reagent for each of the following scenarios involving the formation of silicone dioxide, SiO2. Please explain!!! Thank you! Si + O2 > SiO2 a. 2 atoms of silicone and 2 molecules of
asked by Hannah 
ALGEBRA
I went to the car show this weekend and that is what I saw: Every red car was a sport car, but I found it odd that half of all the blue were sports cars. A salesman told me that half of all the sports car were red. I counted 40 blue cars and 30 red cars.
asked by el chave del ocho 
physics
At 1:00 p.m. a car, traveling at a constant velocity of 86 km/h toward the west, is 22 km to the west of our school. How far from the school will it be at 3:30 p.m.? Answer in units of k
asked by Rachel 
Science
A blueeyed man, both of whose parents were browneyed, marries a browneyed woman whose father was blueeyed and whose mother was browneyed. This man and woman have a blueeyed child. What are the genotypes of all these individuals?
asked by Rebecca 
chem
Consider the reaction 4KO2(s) + 2CO2(g) ! 2K2CO3(s) + 3O2(g) . How much KO2 is needed to react with 75.0 L of carbon dioxide at STP?
asked by Stormie 
GeOmEtRy!!!
what are the solutions to the following equation 3x^2+5=80?
asked by VERONICA 
Math
factor x squared  x  12
asked by Steph 
Physics
A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.
asked by Angelina 
algerbra
the length of a rectangle is one foot more than twice its width. If all sides were increased by 7feet the perimeter of the new triangle would be 122 ft. find the new dimensions of the new rectangle
asked by jessica 
GeOmEtRy!!!
a triangle has an area of 35 square inches. The base of the triangle is 4 inches less than twice the height. What is the length of the base of the triangle?
asked by VERONICA 
Geometery
2. Use only a compass and a straightedge to construct each of the following, if possible: a. A segment congruent to and an angle congruent to ÚACB CB
asked by Darcy 
chemistry
in the equation mg+2hcl>mgcl2+h2, what mass of the hcl is consumed by the reaction of 2.50 mol of magnesium
asked by Esla 
math
You want to determine the height of your school. The building casts a 6 foot shadow at the same time you cast a 15 inch shadow. If you are 5 feet tall how tall is the building?
asked by helen 
Physics
The potetial energy of a spring is 0.25 J when it is compressed 0.05m to the left of the equilibrium position. At this point it comes to its leftmost position. What is its kinetic energy when it returns to its equilibrium point? a. zero b. 0.25 J and the
asked by Cat 
physics
The distance between two successive crests of a certain transverse wave is 1.05 m. Eight crests pass a given point along the direction of travel every 17.9 s.
asked by crystal 
calculus
When region R is revolved about the line y=c, the resultant solid has a volume of 720*3.14. Find all possible values of c.
asked by Kristen 
Math
The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle?
asked by helen 
geometry
the base of an isoscels triangle is 4x long. the altitude to the base is 3x cm long. Find the length of one other side of the triangle
asked by sara 
GeOmEtRy!!!
Which of the following expressions is equivalent to (4a^2b)^3(ab)^3? a. 64a^9b^6 b. 12a^7b^6 c. 64a^7b^9 d. 16a^6b^6
asked by VERONICA 
geometry
find the altitude of an equilateral triangle with side length twelve
asked by sara 
Math
Whatis the surface area of the right square pyramid in square meters? Dimensions: Base/length: 6 meters Slant height: 5 meters I know the formula is S.A.=1/2P "l"+B. I don't know what P or B is.....
asked by Anonymous 
math
a box will hold seven 3pound bags of pears. how many boxes will be needed for 90 pounds of pears?
asked by nicole 
CHEMISTRY
Give the NAMES and FORMULAS for the following COVALENT (nonmetallic) compounds. 1. Sulfur hexafluoride 2. Tetraphosphorus heptasulfide 3. Silicon tetrachloride 4.Disulfur decafluroine moniodide 5. Iodine pentafluoride 6. Tetranitrogen trisulfide 7.
asked by helen 
physics
A 59.0kg runner has a speed of 3.20 m/s at one instant during a longdistance event. (a) What is the runner's kinetic energy at this instant? KEi = J (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change? KEf
asked by Darcie 
MATH
The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle? Would the correct answer be 35?
asked by helen 
MATH word problem
I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric
asked by marko 
Calculus
Foggy optics, inc. makes laboratory microscopes. setting up each production run costs $2500. Insurance costs, based on the average number of microscopes in the warehouse, amount to $20 per microscope per year. storage costs, based on the maximum number of
asked by math 
CHEMISTRY
Can someone tell me if I am getting these correct? Give formula for the following covalent compounds: 1. Sulfur hexafluorideSF6 2. Tetraphosphorus heptasulfideP4S7 3. Silicon tetrachlorideSiCl4 4.Disulfur decafluroine moniodideS2F10I 5. Iodine
asked by helen 
CHEMISTRY
Can someone tell me if I am getting these correct? Give formula for the following covalent compounds: 1. Sulfur hexafluorideSF6 2. Tetraphosphorus heptasulfideP4S7 3. Silicon tetrachlorideSiCl4 4.Disulfur decafluroine moniodideS2F10I 5. Iodine
asked by helen 
English ms. sue
ms. sue u please able to delete my other post where i talk about animoto site today i present it to class actually everyone really like i not want them searching up and come here.
asked by Mohammad 
geography
1. What is the capital of the Scandinavian nation whose eastern border is the Soviet Union? Helsinki, Finland 2. Which will have dawn first, eastern North America or eastern South America? Eastern South America 3. What is the capital of Idaho? Is it east
asked by Reed 
GeOmEtRy!!!
How many xintercepts does the graph of y=x^24x+4?
asked by VERONICA 
Calculus
Evaluate this limit, if it exists: lim (7x)squared  9 / 4x x>4
asked by Labiba 
CHEMISTRY
Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H *The longer ones are the ones I need help on. The shorter ones such as the first one are ones I have completed and would like to make
asked by helen 
Chemistry
[OH] = 1.5 x 10^13 , what is the [H3O] ? This is what I did. 1.0 x 10^14 M / 1.5 x 10^13 M = 1/15 or.066666 So what is the correct answer? Thank You
asked by Misa 
GeOmEtRy!!!
The area of a rectangle is (6x^2)^2y^3 and the width is 9xy^2. What is the length of the rectangle?
asked by VERONICA 
math question
I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric
asked by marko 
english
is this sentence correct What did the philosopher Aristotle mean when he said "To perceive is to suffer"?
asked by kiedra 
Physics
Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m = 2.5 kg block. Figure P4.27. (a) Determine the acceleration given this system. m/s2 (to the right) (b) Determine the tension in
asked by Avery 
social studies
Why did Egypt want to control Nubia?
asked by 5123 
English
I need some help finding statistics and pics about how much money people save by using the online community. Help please !
asked by Anonymous 
Math
Marquis called several pizza places and was told the following prices for a large pizza: $10,$11,$8,$17,and $9. What are the mean and the median prices? Is one more useful than the other for describing the typical price? Explain. P.S. For the mean I got 11
asked by Elaina 
Pre Calculus
Evaluate the trig function tan33degress
asked by Steve 
college/ precal
a square fence 9 feet high enclosing a radio tower is 3 feet from the tower on all 4 sides. guy wires used to hold the tower in position are attached to the tower 30 feet above the ground and 13 feet from the fence on all 4 sides. How long are the guy
asked by theresa 
5th grade math
holly's garden is divided into 5 equal sections. she will fence the garden into 3 areas by grouping some equal sections together. what part of the garden could each fenced area be?
asked by dada 
CHEMISTRY
ive names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H *The longer ones are the ones I need help on. The shorter ones such as the first one are ones I have completed and would like to make
asked by Margearett 
chem
Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide
asked by Margearett 
biology
Is Protein a short term energy source or a long term energy source? please explain
asked by sarry 
biology
Is Starch a longterm energy source or shortterm energy source? please explain!
asked by sarry 
Algebra 2
My question involves "Graphic Representation of Radicals of the Second Order" I know that the length of the hypotneuse of a right triangle equals the square root of the sum of the lengths of the two legs. The problems I'm having trouble with are the square
asked by Josh 
Calculus
If x=2sec (theta), express tan(theta) in terms of x.
asked by Elaine 
Calculus
Evaluate the integral from [(2/square rt 2),0] of dx/sqaure root of (4x^2)
asked by Elaine 
Calculus
integrate: (square root of (y^2 121))/y dy, y>11. I got (12(square root of (y^2121))/12 sec^1 (y/12) +C but it's not right. I'm not sure where I am going wrong.
asked by Becca 
Calc
Integrate from [0, 1/2]: 1/(4x^2+1)^(3/2) dx
asked by Anonymous 
physics
The Ferris Wheel in the figure below is a vertical, circular amusement ride with radius 10 m. Riders sit on seats that swivel to remain horizontal. The Ferris Wheel rotates at a constant rate, going around once in 11 s. Consider a rider whose mass is 59
asked by mo 
Social studies
How did religon affect social order in Sumer?
asked by 5123 
Calculus
Integrate 1/(square root of (x^2 +2x +37))
asked by Anonymous 
7th grade science
definition of cell cycle
asked by saranghae12 
MATH
Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?
asked by mercy 
social studies
How did early writing deveolp into the modern alphabet?
asked by 5123 
ASHFORD
Identify two distinct fallacies you see committed in the media.
asked by JACK 
Math
A school principal randomly choose 75 students for a survey on the cafeteria food. Determine whether the sample may be biased. Explain.
asked by Elaina 
Precalculus
Solve Cos^2(x)+cos(x)=cos(2x). Give exact answers within the interval [0,2π) Ive got the equation down to cos^2(x)+cos(x)+1=0 or and it can be simplified too sin^2(x)+cos(x)=0 If you could tell me where to go from either of these two, it would be great
asked by Josh 
social studies
How was Mesopotamia first united into one empire?
asked by 5123 
Chemistry
A particular reaction has an activation energy of 51.6 kJ/molrxn. How much faster is the reaction at 50 oC versus 25 oC? a. 2 times b. 5 times c. 3 times d. half as fast d. 20% as fast I think it would be A??
asked by Mohamed 
English
How do I cite a picture that is in an article for my work cited page???
asked by Anonymous 
Math
A playground has the shape of a parallelogram. If the base is 30 feet, and tyrese corresponding height ishhhh 25 feet, what is its area?
asked by Milli 
social studies
Whta area did the Pharaohs of Kush rule?
asked by 5123 
Mrs.Sue Math pls check :)
I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric
asked by marko 
chemistry
What volume of a 4.50% v/v solution of ethanol in water can be prepared with 23.9 mL of ethanol
asked by Anonymous 
Chem please help
Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide
asked by Margearett 
CHEMISTRY
Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H
asked by Anon 
life orientation
what according to the basic conditions of employment act applies with regard to the contraventions ?
asked by Anonymous 
any tutor
Are there any tutors on right now or people who are good with chemisty?
asked by Anon 
Psychology
How does selfconcept affect perception?
asked by Alana 
7th grade social studies
what was the TexasSanta Fe expedition, and what were the results? Please explain, help, and thank you very much.
asked by saranghae12 
life orientation
what according to the basic conditions of employment act applies with regard to the contraventions ?
asked by Anonymous 
8th grade math
how would i graph this inequality? 14x23
asked by saranghae12 
physics
When jumping straight down, you can be seriously injured if you land stifflegged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 79.1 kg man just before contact with the ground has a speed of 6.27 m/s. In a
asked by Riley 
Statistic
The television network you addressed in Week 4 is asking you to compare the moods of groups that watch different types of shows. You can choose what they mean by moods. You may compare them on general mood, happiness, depression, frustration, or anything
asked by Anonymous 
Chemistry
How do I balance these equations? KOH + NHO3 → H20 + KOH HCl + NaOH → H20 + HCl Don't have to give me the answer, just tell me how. Please, thanks.
asked by London 
Math
'one angle is 4 times as large as another angle of the same triangle. the third angle o the triangle has a measure of 60 degress.' what are the measures of the other two angles in the triangle.
asked by Mike 
geology
discuss the nomenclature and geometry of sand bodies
asked by excel 
statistics
a recent study by a large retailer designed to determine whether there was a relationship between the importance a store manager placed on advertising and the size of the store revealed the following sample information: observed
asked by markeda 
physics
Two dogs are fighting over a stuffed animal. One pulls to the right with a force of 88 N at 18° above the horizontal. The other pulls down and to the left with a force of 74 N at 12° below the horizontal. Ignoring the weight of the toy, if the total work
asked by tommy 
Algebra; HELP
Solve the equation. 3x^2+18x+24=0 Explanation, too please!
asked by Poop. 
Finite
One coin is fair and one is weighted so that Pr[H] = [ 1/4]. You randomly select one of the two coins, and flip it 3 times, noting the result of each flip. What is the expected number of heads?
asked by KS 
Physics to bobpursley or any1 else who knows this
A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.
asked by Angelina 
Chemistry/Calorimetry
You buy coffee (200.0 ml) served in a styrofoam cup. You are up late working in a chemistry lab, and want to drink the coffee right away, but at 95.0 degrees C, it is too hot to drink. You like the temperature of your coffee to be 79.0 ± 1.0 degrees C.
asked by Jen 
physics
A block of mass m = 4.30 kg is released from rest from point circle a and slides on the frictionless track shown in the figure below. (Assume ha = 5.20 m.) B=3.20 c=2.00 (a) Determine the block's speed at points circle b and circle c. point circle b Y
asked by Darcie 
elementary stats
the participants in a television quiz show are picked from a large pool of applicants with approximately equal number of men and women.Among the last 11 participant there have been only 2 women.If participants are picked randomly,what is the probability of
asked by Rose Bud 
statistics
Suppose IQ scores have a bellshaped distribution with a mean of 100 and a standard deviation of 15. What percentage of the scores are above 130?
asked by Beth 
elementary stats
On a multiple choice test with 11 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers.
asked by Rose Bud 
physics
Taking R = 1.00 k Ω and ∑ 250 V in Figure P28.25, determine the direction and magnitude of the current in the horizontal wire between a and e. google this to find picture
asked by bel 
bisness studies
Three specific example of civil society organisation
asked by kamogelo 
physics
A 90 cm length of steel wire with a diameter of 0.5 mm is stretched between the inside walls of an oven the wire is just taut with no tension when the temperature in the oven is 250 °C. What is the the tension force in the wire when the oven cools to a
asked by sand 
chemistry
How many molecules in 8.221g PbO2?
asked by sara 
ALGEBRA
Find the choice below which gives a first step in solving the given system of equations by the addition method 6x  5y = 12 x + y = 3
asked by TERESA 
calculus
integral of x*sqrt(2*x1)
asked by Anonymous 
Physics
A mass and spring are arranged on a horizontal, frictionless table as shown in the figure below. The spring constant is k = 480 N/m, and the mass is 4.8 kg. The block is pushed against the spring so that the spring is compressed an amount 0.31 m, and then
asked by Tarra 
physics
Two men pushing a stalled car generate a net force of +698 N for 7.37 s. What is the final momentum of the car?
asked by Tom 
algebra
Solve using the substitution method 6x3y=18, 6x+3y=12
asked by sharday 
physical chemistry
A sample of the sugar Dribose (C5H10O5) of mass 0.727g was placed in a constant volume calorimeter and then ignited in the prescence of excess oxygen. The temperature rose by 0.910K In a separate experiment in the same calorimeter, the combustion of
asked by nicole 
Axia College
Need help with solving the double equation problem. 3x + 2y = 3 9x  8y = 2
asked by Beth