Questions Asked on
March 8, 2011

math
0.567km= meters
asked by Linda 
statistics math
MEAN ƒÊ=10 & STANDARD DEVIATION ƒÐ=2. FIND THE PROBABILITIES: 9.4 Ú X Ú 10.6 i have 2 different answers but am checking the answer. thank you one is 0.6179 the other is 0.2358
asked by Jeannie 
physics
A bridge of lenght 79 m and mass 1.1 x10^5 kg is supported at each end. A truck fo mass 20900 kg is located 31 m from the left end. What is the force on the bridge at the left point of support?
asked by Anonymous 
math
An electronics store receives a shipment of 20 graphing calculators, including 3 that are defective. Four of the calculators are selected to be sent to a local high school. A. How many selection can be made using the originial shipment?
asked by cheri 
Physics, error derivation
I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)(1/n^2initial)] I've never had to derive
asked by trace 
chemistry
1. Would Ch3OH or CH3CH2CH2CH2CH2OH have a higher boiling point? Fully explain ypur answer. 2. Explain why a tertiary alcohol will not undergo an oxidation reaction. Give an example. 3. Compare and contyrast similarities/differences of condensation
asked by nusratara 
Geometry
abcd is parallelogram. abde is a kite, ad= 18 cm and be = 10cm. find abcde thanks :)
asked by Skye 
Chemistry
I want to see if i got my answer correct for #1 but I need help on #2 1.A 150g aluminum pan containing 500g of water is heated on a stove for 5 minutes. The temperature goes from 23.5C to 48.9C. How much heat was absorbed. (s for Al is .900j/g C, s for H2O
asked by Ashley 
Algebra
six people can paint a house in 3 days, how long it would take two people to paint it?
asked by Leilah 
Organic Chemistry
If fructose, glucose, and sucrose are the only carbohydrates in honey, how could you use Benedict's reagent to determine the number of moles of sucrose in a 1.0g sample of honey?
asked by Sophia 
FIU
(1)You are preparing a budget for the month of January and are trying to estimate maintenance cost for the month. The maintenance cost is an overhead cost that is categorized as being mixed – that is it has both a fixed and a variable component. To
asked by omar brown 
calculus
Consider the solid obtained by rotating the region bounded by the given curves about the xaxis. y = 9  9x^2 , y = 0 Find the volume V of this solid. Sketch the region, the solid, and a typical disk or washer. Any help or tips would be greatly
asked by Tina 
History (writing)
My college instructor is asking me to define and discuss one of the themes the entire class read about for homework. I've chosen to do a paper on Americanization of the Mexican American woman. However I don't understand how I should define and discuss the
asked by Rei 
Penn Foster
I am looking for the questions to these exams..all I keep getting are the darn answers...I want to compare my answers before I submitt anyone have the orginal questions? to these Anyone have the questions for the penn foster exams with the answers that go
asked by Jessie 
statistics
find the z score corresponding to a score of X = 100 for a mean = 80 and standard devation of 10
asked by karen 
math z score
find the z score corrsponding to a score of X = 100 the mean = 80 and the standard devation = 5
asked by karen 
chemistry
1) a 100ml smaple of 0.18M HCLO4 is titrated with 0.27M LiOH. determine the ph of the soution after the addition of 66.67 ml of LiOH (this is at equivalence point) 2)a 100 ml sample of .20M HF is titrated with .10M KOH. determine th ph of the soution
asked by lia 
quantitative
how long will it take a sum of money to tripple itself at 16%p.a simple interest
asked by caroline 
Chemistry
The Concentration of Cu2+ ions in the water (which also contains sulfate ions) discharged from a certain industrial plant is determined by adding excess sodium sulfide(Na2S) solution to .800 L of the water. Molecular Equation: Na2S(aq) CuSO4(aq) >
asked by Monty 
Algebra
a laptop charges up by 15 % every 20 minutes. How much charged will be after two hours?
asked by leana 
geometry
The length of a box is 4 inches longer than its width, and the height is 2 inches shorter than the width. Which equation can you use to solve for the length of the box if the volume is 240 cubic inches? (Assume that the width of the box is x.)
asked by Anonymous 
Chemistry
What volume of a .500 M HCl solution is needed to neutralize each of the following: 10 ml of a .300 M NaOH solution 10 mL of a .200 M Ba(OH)2 solution
asked by Monty 
physics
A spring gun is made by compressing a spring (assumed to be perfect) and latching it. A spring of constant k = 60 N/ m is used and the latch is located at a distance of 7 cm from equilibrium. The pellets have mass 4 g. What is the muzzle velocity of the
asked by Nazgul 
physics
What is the difference between the second and third Newton’s Laws?
asked by Nazgul 
spanish
i need to give commands to fix the following sentences: 1.El perro tiene hambre 2.hay mucha basura en la cocina 3.los platos,la alformba y el coche estan sucios,yhay polvo en las mesas.
asked by lou 
physics
Solid and hollow cylinders both roll from rest down an inclined plane. Explain the difference in speeds at the bottom.
asked by Nazgul 
physics
The buoyancy force on the 490 balloon is F = 6kN , and the air resistance is F_D = (100v)N, where is in m/s. Determine the terminal or maximum velocity of the balloon if it starts from rest. vmax = ?
asked by Roshni 
English
I forgot to include these 5 statements I still have doubts about. Thank you. 1) Since George Orwell was a child, he developed an independentminded personality and then he professed (?) atheism and socialism. 2) He didn't accept the strict discipline
asked by Mike 
English  Native speakers
Hello once again! Can you tell me the difference between Don't underestimate me! and Don't underrate me! Which one is more used in English and what's the difference between those two words? Is there any other similar word? My second question. Can we say
asked by Mark 
Chemistry
Hi, please can someone tell me if this is the right number of significant figures. 8.1 x 10 to the power of 3 would have 2 sig fig 910 would have 3 175.0 would have 3 please can some tell me if I've got this right Also how would I report each of the
asked by Ally 
maths
Need help to know what to do: solve the equation 9/(x=7)=4/(x3) My book tells me to cross multiply, then move all the terms in x and the terms without x on separate sides of the equation. then divide by the coefficient of x. How do i do this? I don't
asked by Jane 
English
1. I am a freshman in high school. 2. I am a freshman of high school. (Which preposition should we use? Are both OK?) 3. There'll be a parade on the anniversary day. (How do you pronounce "There'll"?) 4. We'll choose between upper secondary school and
asked by rfvv 
SOCIOLOGY
HOW CAN THE CONCEPT OF STRUCTURATION HELP US TO UNDERSTAND BETTER THE CHALLENGES FACED BY MAMARRANDI?
asked by NOBUBELO 
English
1. I'm in the third year of middle school. 2. I'm in the third year in middle school. (Which preposition do we have to use?) 3. My school is a boysonly school. 4. My school is a boys' school. 5. My school is girlsonly school. 6. My school is a girls'
asked by rfvv 
maths
Expand the brackets in the following expression (5y3)^2 My answer is 5y^23^2 The answer i worked out seems to simple but is it correct? If not can someone tell me what i need to do. thanks
asked by susan 
maths
Facrt
asked by jane 
math
The maximum, range of a projectile is directly proportional to the square of its velocity. A baseball pitcher throws a ball at 60 mph, with a maximum range of 242 ft. What is his maximum range if he throws the ball at 70 mph?
asked by Jeromino 
algebra
Factorise the expressions 9y^225 x^2x12 I'm totally stuck!
asked by Marian 
science
50 mL 3.0 M HCl(aq) that means hw much HCl i have to add
asked by Tumpa 
science
50 mL 3.0 M HCl(aq) that means hw much HCl . Can anybody ilaborate it
asked by Tumpa 
algebra
What is the scientific notation for 0.000128?
asked by Danielle 
SCIENCE(CHEM101)
iF 23.74Ml OF 0.01470m nAoh are required to completely neutrize 25.00mL of gastric juice,calculate the concentration of the hydrochloric acid(in g/L )in the stomach gastric juice.show steps and calculations
asked by MAHLATSE 
Physics
after the infant's push, but before the box came to a stop, the box accelerated at a rate of 2 m/s^2. what was the coefficient of kinetic friction between the box and the floor during its motion?
asked by mary 
chem 101
show calculations of the previous problem
asked by MAHLATSE 
chemistry
Determine the concentration at equilibrium if you start with 2.3 grams of Hydrogen and 200grams of Iodine in a 2.3 liter container. If you now add an extra .25M of HI after equilibrium, calculate Qc. Recalculate now what the concentrations should be at
asked by regina 
arithmetic
an arithmetic progression has 20 terms. the sum of all the even terms is 350. given that the first term is 5, find the common difference and the eleventh term.
asked by rusya 
CHEMISTRY
How much heat is needed to melt 150g of ice? and How much heat is needed to change 150g of ice into steam at 110 degrees? My heat of fusion is 361 and my percent error is 8 if you need that. Answers quickly please :(
asked by TaShe 
social studies
How did the existence of slavery affect the development of the Articles and Constitutional governments?
asked by Mia 
General Chemistry
I did a lab on The Decomposition of Potassium Chlorate and I'm confused how to the vapor pressure of water in mmHg?
asked by Anonymous 
Calculus II
Consider the solid obtained by rotating the region bounded by the given curves about the yaxis. y = ln x, y = 4, y = 5, x = 0 Find the volume V of this solid. Help!!! Thank you in advance :(
asked by Sarah 
grammar
Linda Robbins worked in our payroll Department last summer.
asked by Angela 
Biology
imaginary population of fruit doves, Half had purple head feathers and half had green head feathers. Describe how natural selection could act upon this population. What change might you see over time? (really need help with this, looked in my textbook i
asked by :DD 
Food Analysis
1.If 0.5l of 5M solution of CU(NO3) is diluted to a volume of 0.80l by adding water, what is the molarity of the resulting diluted solution? 2.How many ml of water will be required to dilute 11ml of 0.45Macid solution to a molarity of 0.1M? 3.Calculate the
asked by Sarah 
Chem
I want to see if i got my answer correct for #1 but I need help on #2 1.A 150g aluminum pan containing 500g of water is heated on a stove for 5 minutes. The temperature goes from 23.5C to 48.9C. How much heat was absorbed. (s for Al is .900j/g C, s for H2O
asked by Ashley 
geometry
An isosceles trapezoid has base angles equal to 45 and bases of lengths 6 and 12. Find the area of the trapezoid.
asked by john 
Calculus
1. Find the slope m and an equation of the tangent line to the graph of the function f a the point (2, 38) f(x)=9x 2x +6
asked by Anonymous 
chemistry
if you have 1000g of a substance at 20 degrees celsius with a specific heat of .110 c/1 degree celsius and you add 12 kilojoules to it what is the resulting temperature?
asked by carla 
english garmmar
please help me if this correct answer or grmmar question below. what is your purpose to visit to canada and provide your itenerary. my answer. i am going to canada for work since i have an employer for 2 years contract working. 2.what other country you
asked by jessie 
Calculus
tan 0=1 csc 0 = sqrt. 2 cos 0 = sin 0 os 0 = cos (pie/6) The 0s means that symbol for angle. Please someone help me do these problems.
asked by Eva 
sanskrit
aneshyam
asked by anonymous 
Algebra
six people can paint a house in 3 days, how long it would take two people to paint it? I should show steps. It is related to rte of work.
asked by Leilah 
Managerial Economics
A)Who has more monopoly powerWalMart or the concessionaire who has acquired the franchise to sell beer, hot dogs, colas, candy, etc., at a Washington Redskins football game? Explain. B)Who has more monopsony powerWalMart or teams in the National
asked by Tasha 
Spanish8th GradePlease check
I have a question about the owrd cubiertos in Spanish. Does ths word include la servillete el cuchillo el vaso la cuchara el tendor OR is it just like the plate and spoon, fork, knife and NOT the vaso or servillete(napkin)? The word and transaltion is
asked by Rachel 
sanskrit
meaning of aneshyaami
asked by anonymous 
algebra
Factor polynomial completely: 9y^2  25yz 6z2
asked by Bob 
English
Complete the sentences by putting the verb in brackets into the Past Simple or Past Progressive. 1. I saw a light in your window as I ___________________ (pass) by. 2. The student ________________ (answer) the question when the headmistress came in. 3.
asked by Nazgul 
English
Read the following passage and choose where to insert these sentences. a) Magazines such as Fortune and Business Week were all mocking him. b) But it is true that Jobs was still losing money. In the early 1990s he was going c) Pixar Animation Inc. Was also
asked by Nazgul 
Spanish9th grade
I have a questionI'm not sure of this translation: ¿Qué comes parea a uno? Does this mean What do you stop to eat at one or Where? I'm stuck on this one. Thanks you
asked by SammyLynne 
trig
A surveillance satellite circles the earth at a hight of h miles above the surface. Suppose that d is the distance, in miles, on the surface of the earth that can be observed from the satellite. find an equation that relates to central angel (theta) to the
asked by Charles 
Quote Question
What are some really good quotes about the Latin American Revolution? Thanks Allyson
asked by Allyson 
religion
a muslim traveler
asked by mohamed 
math
how do u find the volume of a prism,when each side 12?
asked by danny 
Chemistry
S2O82(aq) + 2I(aq) > 2SO42(aq) + I2(aq) (I) Rate = k [S2O82]x [I]y Rate1 = k [S2O82]x [I]y ƒ´ [S2O82ƒ{] Rate = ƒ{ƒn  ƒ´ƒnt Experiment data Experiment: 0.20M NaI,0.20M NaCl, 0.010M Na2S2O3,2% Starch,0.20M K2SO4, 0.20 M
asked by Jude 
english
recommendation
asked by marie 
financial accounting
I am having trouble figuring out my accounts payable and capital. Any help on going about and solving this would be greatly appreciated. I have listed the data below... Travis Fortney, an architect, opened an office on April 1, 2010. During the month, he
asked by Anonymous 
english
rosaq was nervous around the large dog whose moods were easily changable
asked by marie 
english grammar
class vii analogies
asked by anonymous 
chemistry
ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H2O). What mass of water is produced by the reaction of 1.09g of oxygen gas?
asked by Mal 
MATH
HOW DO YOU SOLVE A PI PI R STEP BY STEP?
asked by HAVEN 
English
Read the passage below and complete it with the verbs in Past Simple from the box. _____________________________________ create,take,test, offer,be, publish,come out,have , give, find; _____________________________________ The PostScript language was
asked by Nazgul 
Mathematics
Determine the shortest distance from a house situated at the origin to a road that is represented by the line 3y+x+18=0
asked by Mokotedi 
SpanishPlease check my work
Please check if I answered these correctlyThank you ¿Tienes hambre? Si, tengo hambre. ¿Tienes sed? Si, tengo sed. ¿La manzana es una carne? No, la manzana es una verdura. ¿Qué comes para el desayuno? Yo como el cereal con leche. ¿Prefieres el
asked by SammyLynne 
wxmaxima help math mate!
one expression is y=log(100493/40000)x the x is next to the (100493/40000) same with the other expression y=atan(100493/40000)x, y=exp(100493/40000x) approximate the region bounded by the given curves. be sure to specify a range of x and y that results
asked by jessica 
Algebra
Donna runs 4 miles in 30 minutes. How many miles can she run in 63 minutes?
asked by Olivia 
statsplease help
MEAN=10 & STD DEVIATION=2. FIND THE PROBABILITIES: 9.4 less than X less than 10.6? i have 2 different answers but am checking the answer. thank you
asked by jean 
math
Find the present value of $9000 due at the end of 18 years at 11% per annum compounded quaterly????
asked by Alex 
ap history
why did the cartoonist use "$" instead of "s" for senate?
asked by alena 
Math/Algebra
y^24y12=0 Please help. :)
asked by Jessica 
math
Use each of the numbers 1 through 9 once in any order that you want to make and expression 2011
asked by vicki 
optimization calculus
a net enclosurefor practisinggolf shots is open at one end, as shown, find the dimensions that will minimize the amount of netting needed and give a volume of 144 m^3(netting is required only the sides, the top, the far end.)
asked by Anonymous 
college
c= 1/2 f(s+k) solve for S S= 2C/f k is this correct?
asked by tonya 
ap u.s history
how could the trusts purchase a senate seat?
asked by alena 
Calculus AB
Consider the region trapped between the graphs of y=9x^2 and y=113x. a) find the area of this region b) set up an integral which computes the volume of the solid of rotation obtained by rotating this region about the xaxis c) set up an integral which
asked by Nellie 
Calculus AB
Consider the region bounded by the graphs of the equations x=y^2 and y=3x. Set up 2 integrals, one with respect to x and the other with respect to y, both of which compute the volume of the solid obtained by rotating this region about the xaxis and
asked by Nellie 
Geometry
I find these questions so difficult! I've been trying to solve them but I just can't. As they are diagrams they are hard to express in words, so the questions are the links below: 1) tinypic(.)com/r/25z7486/7 2) tinypic(.)com/r/4uhrg3/7 3)
asked by Ray 
to Nazgul
You have posted the same thing, time after time this morning, and you've received the same response from several people here: You need to post what YOU THINK the answers are, and then someone will be able to help you.
asked by Writeacher 
chemistry
25.0 cm3 of an acidified solution containing Fe2+ ions was titrated against potassium manganate (VII) solution. 20.0cm3 of 0.050M potassium manganate (VII) was needed. Calculate the concentration of Fe2+ ions in the acidified solution.
asked by tam 
Chemistry
Reposting since it wasn't clear in the previous post S2O82(aq) + 2I(aq) > 2SO42(aq) + I2(aq) (I) Rate = k [S2O82]x [I]y Rate1 = k [S2O82]x [I]y Experiment data Experiment: 0.20M NaI,0.20M NaCl, 0.010M Na2S2O3,2% Starch,0.20M K2SO4, 0.20 M
asked by Jude 
English
I have a report to do on ways people tried to live forever. can anyone help me find info for this.
asked by Michael 
Math
today Thomas deposited $100,000 in a threeyear,12% CD that compounds quartly. What is the maturity value of the CD?
asked by Bobbi Loffredo 
Chemistry
Rank the following in order by increasing boiling point and explain why? CH3Cl Rn CH4 CH3CH2OH
asked by MMPM 
Physics
A bus starts from rest at a bus stop and accelerates at a rate of 1.12 m/s^2 for 11.0s. It runs at constant speed for 80.0 s and slows at a rate 1.20 m/s^2 until it stops at the next bus stop. (a) What is the maximum speed attained. (b) Find the total
asked by Paul 
Algebra
I have a question I have this systems to solve 2xy = 1 3x3=y How do I go about solving this? Please give me some direction
asked by Jessie 
history
the social, economic, and political composition of the decade of corporate greed and how it affected the political climate of the 1980s.
asked by tonia 
math
In math class, students must randomly draw a card that contains an equation that they must graph on the board. If the cards contain the equations 2y = 4x + 2, x(x + 1) = 0, 2x + y = 0, x = 2y , x2 + 1 = 0, and y  2x = 0, then what is the probability that
asked by MELISSA 
BUSINESS LAW
In the video game Corporate Cowboy, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of
asked by Marie 
Ethics
What are some advantages and disadvantage for a Christian following conscience rather than scripture.
asked by Anique 
algebra
A standard die is rolled 10 times, with the outcomes {2, 4, 1, 3, 4, 2, 5, 2, 5, 1} (in this order). You can conclude _____.
asked by Anonymous 
PHYSICS
A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a bag of sand having a mass of 20kg. is suspended from one end of the plank. on the other end of the plank, a concrete block of
asked by DMITRIC 
physics
How much work is required to stop an electron (m = 9.11 1031 kg) which is moving with a speed of 2 106 m/s?
asked by Tiniyah 
Biology
You find an unusual organism growing on the bark of a dying tree. Under a microscope, you observe that its cells are eukaryotic, have cell walls, and do not contain chloroplasts. Into what kingdom would you classify this organism? Explain your decision.
asked by Tara 
chemistry
calculate the volume in milliliters of 3.6 mol/L sodium nitrate solution that contains 325 mmol of sodium nitrate
asked by Mal 
English
The internal struggle of Macbeth's that forms a central conflict of this play is: A. his cowardliness and his wife's bravery B. his loyalty to Duncan and his ambition to be king. C. his hatred for Duncan and his desire to be kind. D. both A and B I'm
asked by anthony 
English
Help! In Ian Frazier's essay How to Operate the Shower Curtain, what problems are users likely to encounter in using the shower curtain?
asked by Jay 
Chemistryplease help
What is the purpose of adding zinc chloride in the preparation of starch iodide paste? Please refer to the procedure below:  Starch Iodide Paste Heat 100mL of water in a 250mL beaker to boiling, add a solution of 0.75g of potassium iodide in 5mL of
asked by Jan 
geometry
What is the area of the sector, in square units, determined by an arc with a measure 45° in a circle with radius 6? Round to the nearest tenth.
asked by Anonymous 
2nd grade/math
How do you find the perimeter of a letter, example I, U, and J? The area for the I is 9 square cm. Do you still count all the sides or what? Any help would be appreciated!
asked by Jennifer 
statsplease help
repost MEAN=10 & STANDARD DEVIATION =2. FIND THE PROBABILITIES: 9.4 less than X less than 10.6 i have 2 different answers but am checking the answer. thank you one is 0.6179 the other is 0.2358
asked by jean 
Math
How do I solve this 12042÷ (10*44*6) Can you explain
asked by Donna 
English
I am between two different thesis statements for Frazier either it is where the writing becomes italicized, "Remember to keep shower curtain inside tub at all times!" Or In the last paragraph from Operating the shower curtain is kind of tricky to there is
asked by Jay 
physics
An object is dropped from a platform 400 ft high. Ignoring wind resistance, how long will it take to reach the ground?
asked by bere 
algebra
Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) =  0.001518x4 + 0.067326x3 – 1.4367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is
asked by Jackster 
HSM 220
what are thre ways human resources help support the strategic goals of human service organizations?
asked by timothy 
Chemistry
how much sulfur dioxide is needed to decrease the pH of 1L of water from 9.8 to 8.0?
asked by lisa 
algebra
write an equation for the line parallel to the x axis through the point 7,2
asked by kim 
English
An example of verbal irony is: A. Macbeth saying, "O, yet I do repent for my fury, that I did kill them." B. Macduff referring to Lady MacBeth as "O gentle Lady." C. Macduff saying "O horror, horror, horror." D. the witches saying, "fair is foul and foul
asked by anthony 
algebra
i don't get this ok it says suppoes the discount is only 1 percent .what total discount amount would mr.fernandes receive on the 15 CDs
asked by nacolie 
physics
In a lab experiment, a 1.5kg cart traveling at 4.3 m/s in the +x direction collides with a 2.5kg cart traveling at 2.7 m/s in the x direction. After the collision, you find that the 2.5kg cart is traveling at 1.9 m/s in the +x direction. How fast and
asked by nic 
physics
A net force of 1.6×10−15 N acts on an electron over a displacement of 5.0 cm, in the same direction as the net force. (a) What is the change in kinetic energy of the electron in joules? (b) If the electron was initially at rest, what is the speed of the
asked by jamaisa 
physics
A proton is moving at 425 m/s. (a) How much work must be done on it to stop it?(answer in joules) (A proton has a mass of 1.67×10−27 kg.) (b) Assume the net braking force acting on it has magnitude 8.01×10−16 N and is directed opposite to its initial
asked by jamaisa 
math
how to explain this and solve this equation Y=5x210x+9
asked by josy 
physics
A small domestic elevator has a mass of 454 kg and can ascend at a rate of 0.180 m/s. What is the average power that must be supplied for the elevator to move at this rate ? answer in watts.
asked by sabeen 
us history
how did the events at chickamauga and chatanooga affect georgians
asked by shannon 
Chem
What volume of 0.0500 M Ba(OH)2 will react completely with 29.50 mL of 0.350 M HCl?
asked by Jawa 
Chem
What volume of 0.0500 M Ba(OH)2 will react completely with 29.50 mL of 0.350 M HCl?
asked by Jawa 
physics
What is the acceleration of two falling sky divers (mass 107.0 kg including parachute) when the upward force of air resistance is equal to onefourth of their weight?
asked by Anonymous 
Math
Find a set of six whole numbers that have a mean, a median, and a mode of 50. The numbers cannot all be the same.
asked by Ky 
math
a student has two test scores in a psychology class. The mean of these scores is 76 and their range is 28. Use this information to determine the two scores. ( write a system of linear equations to solve the problem)
asked by tawnie 
physics
Two sound sources radiating in phase at a fre quency of 540 Hz interfere such that maxima are heard at angles of 0◦ and 21◦ from a line perpendicular to that joining the two sources.
asked by Anonymous 
english
how to write a good thesis for a research paper?
asked by soksan 
english
what is the appositive inthis sentences Charles Lutwidge Dodson is better known by his pen name,Lewis Carroll.
asked by jessy 
5th grade math
3m=63
asked by casey 
PSYCHOLOY
CONTRAST TWO THEORIES OR PERSPECTIVES FROM LATE STAGE ADULT DEVELOPMENT
asked by ANGIE 
MAth
how many degrees does the minute hand move from 4:00 to 4:30?
asked by Kristiana 
Math
x/(x^216)6/(x^2+5x+4)
asked by Jake 
english
what are words that have the same beginning sound as cushion has?
asked by alexander very important!!! 
Physics
n an auto accident, a car hit a pedestrian and the driver then slammed on the brakes to stop the car. During the subsequent trial, the driver's lawyer claimed that the driver was obeying the posted 35.0 mph speed limit, but that the limit was too high to
asked by Ana 
Geography
What three countries are north of Mexico and considered to be part of North America?
asked by Maeghan 
Math
If glenda rolled two sixsided number cubes nine times and computed the sum of the numbers rolled each time. If the mean sum of Glenda's rolls was 6 what was the total of the nine sums Glenda rolled? Suppose Glenda's rolls were 12,7,3,10,9, 2, 11, 7 and 8.
asked by Matt 
math HELP!!
Are the following simplified fractions? 1.1/2 2.1/5 3.2/3 4.5/6 5.3/4 6.4/8,1/2
asked by liz 
MathCHECK PLEASE
Which of the statements is ALWAYS TRUE? AA right triangle is a scalene triangle. BAn equilateral triangle is an isosceles triangle. CAn isosceles triangle is an obtuse triangle. DA right triangle is an acute triangle. I got either A or D. I don't know.
asked by Catherine 
English
Can you please check if these sentences are OK? Thank you. 1)Forensic science adopts different scientific methods to catch criminals. 2)In particular, scientists can examine a suspect’s fingerprints or check blood type. 3) They can also check teeth and
asked by Mike 
English
I forgot to include the following sentences. Thank you. 1) Forensic artists are also essential to catch criminals. They are required to possess two skills. 2) First, they need to have good interview skills as they have to talk to victims and listen to
asked by Mike 
ENGLISH
What are words with the ending shion except cushion and fashion?
asked by Phillip 
math
what is 34 multiply 56?
asked by Phillip 
Math
a plane flies due north at 300 mi/h for 3 h then due west at 250 mi/h. If x represents the number of hours the plane is flying due west, determine for what values of x the plane will be more than 3700 mi from it's original point.
asked by Rob 
Scocial Studies
Who was the leader of China during WW2?
asked by Lisa 
chemistry
number of moles of Cl in 2.7 mol CaCl2
asked by Anonymous 
math
what is 200000 times 56 =?
asked by sammi 
Math degrees
how many degrees does the hour hand move in 2 hours
asked by Kristiana 
Math
I have to define function. Would it be a set of possible input values? Not sure if I worded it correct.
asked by Cindy 
Math
I have to explain the vertical line test and how it is used.
asked by Tammie 
MATH
CALCULATE THE AREA FOR THE FIGURE WITH SIDES 9YDS 6YDS 6YDS 6YDS 3YDS 12YDS
asked by RJ 
Algebra
Explain how to use a graph to determine the number of solutions of a system?
asked by Mary 
Economics
List the various causes of inflation and determine if they are an injection or a leakage. Demandpull theory: This is a leakage. If all sectors in the economy try to buy more than the economy can produce, people may start to rely on imports. Therefore,
asked by David 
math
how can you use the multiplication facts for 3 to help you find the multiplication facts for 9
asked by esha 
geometry
IF THE RADIUS OF THE SPHERE IS 26 UNITS AND THE RADIUS OF POINT R IS 26 UNITS FIND CR.
asked by Anonymous 
SpanishPlease check my answers
Please check if I answered these correctlyThank you I forgot to put accent on "i" in Si and I use spanishtypeit not manually on the keyboardPlease excuse lack of accent ¿Tienes hambre? Si, tengo hambre. ¿Tienes sed? Si, tengo sed. ¿La manzana es una
asked by SammyLynne 
physics
Rank these automobiles based on the magnitude of the impulse needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s
asked by Diana 
physics : different question
Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s
asked by Diana 
PhysicsPlease check
Do charged particles always experience equal but opposite electrical forces? My answer is The electric forces are directly porportional to the quantity of the charge on the objects. Is that correctwe just started learning this and I'm trying to answer
asked by Rachel B. 
Physics
In principle, anytime someone jumps up, the earth moves in the opposite direction. To see why we are unaware of this motion, calculate the recoil speed of the earth when a 65.0 kg person jumps upward at a speed of 1.70 m/s. v=?
asked by Mely 
Reading
what part of the book would you look in to find other book about the same topic
asked by Reading 
Physics
A certain piece of wire has a resistance of 250 ohms. if the wire is cut in three pieces and the cross sectional area of each piece is halved, what is the resistance of each piece?
asked by Kate 
Math
I was assigned an ISU for Data management. In first part, it requires a thesis (Example: Why do teenagers pay so much for car insurance?), hypothesis and 3 main points to back up thesis. I told my teacher that I wanted to do about death rates, what factors
asked by Jacob 
Physics
The established value for the speed of light in a vacuum is 299 792 458 m/s. What is the orderofmagnitude of this number?
asked by Olivia 
Chemistry
Please help me understand!..If you have 100.0mL of a 30.0% aqueous solution of ethanol, what volume of water is in the solution?
asked by Emily 
physics, error calculation repost
I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)(1/n^2initial)] I've never had to derive
asked by Trace 
physics
A 8.00 kg shell at rest explodes into two fragments, one with a mass of 2.00 kg and the other with a mass of 6.00 kg. If the heavier fragment gains 130 J of kinetic energy from the explosion, how much kinetic energy does the lighter one gain?
asked by Joe 
physics
an object is moving so that its kinetic energy is 83.8 J and the magnitude of its momentum is 27 kg m/s what is the speed of the object
asked by Anonymous 
math
if gunnar gives me a cookie, i will have twice as many cookies. if i give gunnar a cookie, we will have the same number of cookies. how many cookies do i have and how many cookies do gunnar have?
asked by jockalyn quswbey 
religion
what sociopolitical issues helped spur the Reformation?
asked by matt 
Physics
An inflated balloon occupies a volume of two (2) liters. The balloon is tied with a string and weighted down with a heavy stone. What is its volume when it reaches the bottom of a pond 5.2 meters deep? Assume the atmospheric pressure is equal to 1
asked by Ariannah 
algebra
i need help on factoring. the equation is 4x^3  6x^2 + 10x  15. how do you do this problem?
asked by tru 
Physics
A oneliter container completely filled with mercury has a mass of 13.6 kg and weighs 133.3 N. What is the buoyant force on the container if the container is placed in water?
asked by Ariannah 
Physics
Suppose a certain type of deciduous tree releases 7500 leaves on average each fall. If the average mass of each leaf is 1.7 g and a 135 000 acre forest has 206 of these trees per acre, how many kilograms of leaves are dropped on the forest floor each fall?
asked by Olivia 
math
Please help me I'm stuck on this one: (5x4)2=12+ I'll try (5x4) 202=12+ answer 18 or (5x4) 202=18 12+18=30 Really I don't think either is right
asked by ron 
Physics
Describe how surface area and volume are related in solids? Give an example.
asked by Ariannah 
Physics
How is surface tension illustrated by water on a coin?
asked by Ariannah 
Physics
Explain how a drop of water bulging over the edge of a coin demonstrates surface tension.
asked by Ariannah 
Physics
Describe how you can determine the specific heat of an unknown metal whose mass is known.
asked by Ariannah 
Physics
Certain kinds of steel expand one part in 100,000 for each 1o C they increase in temperature. If a section of a bridge that has no expansion joints has a length of 1.5 km when the temperature is 50o C, what is its length when the temperature is 80o C?
asked by Ariannah 
Math
My 7th grade daughter has the following math problem and gets zero help from her "language arts" teacher who gave out this problem: WANT X BE ________ CAREER Each letter in this question stands for a 1digit #. No 2 letters may stand for the same #. Find
asked by KP 
Physics
A 32kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 205 J from 435 J. How high does she rise during this interval? Neglect air resistance.
asked by James 
grammar
What would be the simple predicate? The insects' bodies can turn wood into food. I think it would be turn.
asked by Wesley 
geometry
If a triangle side lengths of 12 cm, 35 cm, and 37 cm, what type of angle is it?
asked by sandy 
Grammar
What is simple predicate? These insects are strange and amazing creatures. Would it be are?
asked by Wesley 
Statistics
A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 80 adults over 50, what is the mean and standard deviation of those that wear glasses?
asked by Anonymous 
math
2.75 divided by 1000
asked by sandra 
pre calc
in many parts of the coutry the average temp of a particular area may be modeled by a sin usoidal function. According to NCDC the average temp of k city is 92.2 in july and 32.2 in january assume that the period is 12 what is the best model for when july
asked by bandit55751 
grammar
Simple predicate? The history of these pests may surprise you. Would it be may?
asked by Wesley 
geometry
Suppose line AB is parallel to line MN.Name all angles congruent to angle 8. In the figure at the right, x is parallel to y.List all angles that are congruent to angle 1. If the measure of angle 5 is 45 degrees, what are the measures of the other angles.
asked by me 
physics
A book weighing 29 N is placed on a table. if the support force back on the book from the table is 29 N, what is the net force?
asked by Emily 
grammar
What is simple predicate? Its legs make it one of the world's fastest insects. Would it be make?
asked by Wesley 
Income Tax
Filing an income tax return I need the steps, there are I think 6 steps, is there a site that shows the steps?
asked by Anonymous 
chemistry
A pickling solution is prepared by dissolving 278 g of NaCl in 41 L of water. Calculate the osmolarity of the solution
asked by bob 
geometry
what is true about the slopes of two perpendicular lines niether of which is vertical?
asked by sandy 
physics
What is the acceleration (in meters/second^2) of a freely falling 74.0 kg skydiver, if air resistance exerts a force of 264 N?
asked by nm 
math
which algebraic expression represents tamara age if she is 7 years younger than her sister? Assume her sister's age is a. A. a7 B. a+7 C. 7a D. 7a I think the answer is c.
asked by Holly 
physics
A 0.110 kg baseball, traveling 32.0 m/s, strikes the catcher's mitt, which recoils 14.0 cm in bringing the ball to rest. What was the average force (in newtons) applied by the ball to the mitt?
asked by nm 
Geometry
The vertices of ∆GHJ are G(2,3), and J(1,3). If ∆KLM ≅ ∆GHJ, fing LM.
asked by sandy 
physics
A wooden box weighing 281 N is pushed across the floor by a workman who exerts a horizontal force of 166 N. If the force of friction between the box and the floor is 21 N, what is the acceleration (in meters/second^2) of the box?
asked by nm 
math
Brookes quiz scores are as followed; 12/20, 12/18, 85%, 5/10 What is the order from least to greatest of the scores?
asked by marshal 
English
In Emily Dickinson poems she has some of the first letters of words capitalized. Why so?
asked by English<3 
precalc
in many parts of the coutry the average temp of a particular area may be modeled by a sin usoidal function. According to NCDC the average temp of k city is 92.2 in july and 32.2 in january assume that the period is 12 what is the best model for when july
asked by bandit55751 
Math
what fractions are greater than 3/4?
asked by Olivia Hines 
geometry
WHAT IS THE JUSTIFICATION FOR
asked by ROMALLO 
5th grade math
is 13/20 greater than 3/4
asked by Olivia Hines 
literature
In the book code orange: How do they cure the small pox?
asked by laurie 
math
which algebraic expression represents tamara age if she is 7 years younger than her sister? Assume her sister's age is a. A. a7 B. a+7 C. 7a D. 7a I think the answer is c.
asked by marshal 
math
Can someone answer this ans show me how to solve? (168)+(4x4)
asked by Liberty 
Math
What does x equal in this question? 0.75x  1.25 = 6.25
asked by Kegan 
geometry
What is the justification for angle 1 and angle 2 are complementary
asked by ROMALLO 
geometry
f(x)=2x²Bx+4 and f(3)=13, what is the value of B?
asked by brian 
geometry
what is the justification of m angle 1 + m angle 2 = 90degree
asked by ROMALLO 
geometry
what is the justification for m angle 1 = 60degree
asked by ROMALLO 
physics
The current through a light bulb connected across the terminals of a 120 V outlet is 0.25 A. At what rate does the bulb convert electric energy to light 1Your answer was incorrect, but has changed from what was graded. W
asked by nkechi 
English
1. He got into college last year. 2. He went into college last year. 3. He got to college last year. 4. He went to college last year. (Are the four all the same in meaning? Which ones are commonly used?)
asked by rfvv 
geometry
what is the justification of 60degree + m angle 2 = 90degree
asked by ROMALLO 
chemistry
Arrange the following aqueous solutions in order of increasing freezing points (lowest to highest temperature): 0.10 m glucose, 0.10 m BaCl2, 0.20 m NaCl, and 0.20 m Na2SO4.
asked by Bianca 
chemistry
Why are some chemicals addictive in all people, some only in some people, and some are not addictive in anyone?
asked by sammy jo 
geometry
The medians of the legs of a right triangle are 3 square root 6 and 6. What is the length of the hypotenuse?
asked by Me too 
chemistry
How would you prepare a standard solution of 1m HCL(5.6 of HCL is 1.18)?
asked by Joy 
Statistics
The weights of adult males are normally distributed with a mean of 172 lb and a standard deviation of 29 lb. 1.Find the weight that divides the upper 2% of weights from the lower 98%. Can anyone please explain how to do this,I have no idea from where to
asked by Plzz helpp 
geometry
Write a flow proof:if angle 1 and angle 2 are vertical angles, and angle 2 and angle 3 are complementary, then angle 1 and angle 3 are complementary.
asked by Isis 
Socials
Im working on a map about the railways in British North America, 1865. And it shows all the railways like the Grand Truck Railway, Maritime Railway, Intercolonial Railway, American Railway, Great Western Railway, and the Northern Railway. And basically the
asked by Sara 
Chemistry
Put the following solutions in order of increasing vapor pressure. Explain your reasoning. .060 m K2CO3 .030 m LiC2H3O2 .120 m C2H6O2 (a nonelectrolyte)
asked by MMPM 
Chemistry
The boiling point of phosphine, PH3(88C) is lower than that of ammonia, NH3(33C) even though phosphine has twice th molar mass of NH3. Why?
asked by MMPM 
calculus
Under what conditions for f'(x) and f''(X) can a graph be " straight" wthout being horizontal?
asked by gINa 
math
How many rectangles can be made with a perimeter of 10 units
asked by mikecia 
physics
15000N on earth 2250N on moon Moon Radius= 1.74x10^6m Orbital Height 100km Total orbit 1.84x10^6m What is orbital speed?
asked by bob 
MATH
The ratio of the distances a 7iron and a 5iron will drive a golf ball is 5 to 6. If a golfer averages 153 yards with a 7iron how far should he average with a 5iron Express your answer as an integer or mixed number. 183.6 The appliance store where the
asked by anonymous 
math
3. Suppose a ladder is 12 ft. long. The base of the ladder is 5 ft. from a wall, and the top of the ladder is leaning against the wall. How far above the ground is the tip of the ladder?
asked by joan 
MATH
Martin takes out a simpleinterest loan at 7.5 %. After 6 months, the amount of interest on the loan is $69.64. What was the amount of the loan? is $522.30 correct
asked by anonymous 
Math
Debra is buying prizes for a game at her school's fundraiser. The game has three levels of prizes, and she has already bought the second and third prizes. She spent $1.54 on each second place prize and $0.77 on each third place prize. She wants the first
asked by Anonymous 
8th grade honors english
How do I properly site sources on my research paper?
asked by Tina 
math
HOw can I find the domain and range of this problem 4x^339x^2+93.5
asked by joseph 
precalc
cos(θ)=((3)/(7)) where pi
asked by bandit55751 
FRENCH
Conversation Culturelle Étienne is waiting for his friend Aurélie at the exit of the ChampsÉlysées  Clemenceau métro station. They are going to see an art exhibit at the Grand Palais. Étienne: Enfin! J'ai attendu une demiheure. Aurélie:
asked by Sidney 
Calculus
Differentiate the following ( do not simplify) a) ln(√sinx)
asked by Zukii 
PHYSICS
A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a bag of sand having a mass of 20kg. is suspended from one end of the plank. on the other end of the plank, a concrete block of
asked by JACKSON 
Chemistry
What is the concentration of nitrate ions in a solution that contains M aluminum nitrate?
asked by Mm 
chemistry
How many moles of ammonia gas can be produced from the reaction of 3.0L of N2 and 3.0L of H2 according to the following equation: N2(g) + 3H2(g)> 2NH3(g)?
asked by jerome 
geometry
what is the justification of 60degree + m angle 2 = 90degree
asked by help Ms.Sue 
Math
Thankyou very much! I'm having trouble with this question about taylor series. how would i go about doing the following questoin? thank you! find the maclaurin series for the function sin(x)x+((x^3)/3!) how do i do this? thanks aagain
asked by KIKSY 
math
can you explain how to do this 8w + 1.5= 25.5
asked by nia 
english
opposite of cold \choices of answers bucket quick preset raise rock sick sleep small story yell make large jump home glad close car bucket
asked by natalie 
math
scale drawing of a right triangle, base= 4ft, height= 2 ft, scale = 1/2 inches = 2ft, finf the area of the scale drawing.
asked by helen mimis 
College Physics
n the approximation that the Earth is a sphere of uniform density, it can be shown that the gravitational force it exerts on a mass m inside the Earth at a distance r from the center is mg(r/R), where R is the radius of the Earth. (Note that at the the
asked by Amelie 
AP Chemistry
There is an unknown amount of unlabelled monoprotic acid in an unknown amount of water titrated with a sample with a solution of NaOH of unknown molarity. After adding 10.0 mL of NaOH, the pH=5.0. The equivalence point is 32.22 mL of NaOH. What is the Ka?
asked by Ben 
Geometry
Tan12= 3/x what is the value of x? and how is that so?
asked by Aminah 
Physics
A student manages to get on the roof of a school and toss out a balloon with the speed of 10.0m/s. The height of the school is 25.0 m. How long was the balloon in the air?
asked by Romero 
Physics
An old car is traveling down a long, straight, dry road at 25.0 m/s when the driver slams on the brakes, locking the wheels. The car comes to a complete stop after sliding 305 m in a straight line. If the car has a mass of 755 kg, what is the coefficient
asked by Amanda 
eth125
Explain what is meant by the model or ideal minority. How is this label both a positive and negative one? How has the media contributed to prejudice and discrimination against Asian Americans? How might these problems be remedied? What does the Japanese
asked by stacie 
Calculus
The area of largest isosceles triangle that can be drawn with one vertex at the origin and with others on a line parallel to and above the xaxis and on the curve y=27x^2 is.... A) 108 B) 27 C) 12 root 3 D) 54 E) 24 root 3
asked by Sal 
physics
An object moves from the position r1=(2,10,3)m to the position r2=(2,3,7)m and then to r3=(3,4,2)m. Find a)displacement b)distance
asked by sandhu 
Calculus
Evaluate the integral. S= integral sign I= absolute value S ((cos x)/(2 + sin x))dx Not sure if I'm doing this right: u= 2 + sin x du= 0 + cos x dx = S du/u = ln IuI + C = ln I 2 + sin x I + C = ln (2 + sin x) + C Another problem: S ((sin (ln x))/(x)) dx I
asked by CMM 
Chemistry
How many grams do 5.2×10^20 atoms of silicon weigh? Answer in units of g.
asked by Bob 
physics
Dear Sir; I am writing in response to your request for additional information in Block #3 of the accident reporting form. I put "Poor Planning" as the cause of my accident. You asked for a fuller explanation and I trust the following details will be
asked by plz help asap 
math
Two events are _________ if the outcome or occurrence of the first affects the outcome or occurrence of the second so that the probability is changed. Please Help Me . !
asked by Tanya 
career
How do you do a resume? and could someone show me how to go about starting a resume?
asked by Betty 
Chemistry
How much lead (Pb) is in 3.01 × 10^12 atoms of lead? Answer in units of mol.
asked by Chuck 
quimica
como se llama el gas que se desprende de mezclar acido acetico con vinagre?
asked by Anonymous 
physics
A car is traveling a road that includes two sides of an equilateral triangle with a constant speed s. What is the magnitude of the average velocity v of the car?
asked by sandhu 
algebra
Could you give an example of an exponential expression? thx, I cant think straight it's too late =P 11:00 pm here
asked by popcorn010 
Chemistry
2. When a 1.000 g sample of the rocket fuel hydrazine, N2H4, is burned in a bomb calorimeter which contains 1200g of water, the temperature rises from 24.62C to 28.16C. If the C for the bomb is 840 J/C Calculate: q reaction for combustion of a onegram
asked by Johnny 
organic bio chemistry
how many mL of a 0.20M KOH solution is needed to neutralize 25 mL of 0.25 M H2SO4?
asked by lisa 
chemistry
What is the chemical structure, its principle source, its legals uses (if any) and its relative addictiveness on scale 110 : CAFFEINE
asked by annonymous 
math
solve this problem using the power rule (10x^8) x (10x^10) =
asked by jj 
Chemistry
How many atoms of carbon are present in 31.4 g of a compound that is 16.2% carbon, by weight? Answer in units of atoms.
asked by Jackson 
Science
1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume
asked by Alisha 
Chemistry
A 30 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after the following volumes of acid have been added: 30 mL, 35 mL, 36 mL, 37 mL, and 40 mL.
asked by Melissa 
Chemistry
A 30 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after the following volumes of acid have been added: 30 mL, 35 mL, 36 mL, 37 mL, and 40 mL.
asked by Melissa 
math
joe borrows $4,000, the loan is for 18 months at 5% interest, whats the total amount due on the loan?
asked by brittney 
Pre Algebra
Find the Original Amount: NEW AMOUNT: 210 75% INCREASE **please help me as soon as possible and explain steps please!**
asked by INEEDHELP! :(