Questions Asked on
November 28, 2011

chem
Classify as a strong, weak, or non electrolyte. FeCl2, HBr, HCN, CaCO3. I put FeCl2 and HBr as strong, HCN as weak and CaCO3 as non.

calculus
find the work done in winding up a 175 ft cable that weighs 4.00 lb/ft?

statistics
This table shows claims and their probablity for an insurance company. AMOUNT OF CLAIM PROBABILITY $0 0.65 $50,000 0.25 $100,000 0.06 $150,000 0.02 $200,000 0.01 $250,000 0.01 1. Calculate the expected value? 2. How much should the company charge as an

World Geography
What biomes have the highest population density?

Math
Jim Hunter decided to retire to Florida in 10 years. What amount should Jim invest today so that he will be able to withdraw $25,000 at the end of each year for 30 years after he retires. Assume he can invest money at 9% interest compounded annually.

Math
At the beginning of each period for 9 years, Scott Sullivan invested $900 quarterly at 4% interest compounded quarterly. What is the present value of this annuity due? (Using the Calculator)

chemistry
5. The industrial production of hydroiodic acid takes place by treatment of iodine with hydrazine (N2H4): 2I2 + N2H4 → 4HI + N2 a.How many grams of I2 are needed to react with 36.7 g of N2H4

Physics
Zinc has a work function of 4.30 ev . A 4.50eV photon strikes the surface and an electron is emitted. What is the maximum possible speed of the electron?

geometry
YW bisects angle XYZ. m of angle XYW = (2x + 7)degrees and m of angle XYZ = (6x  8)degrees. Find the value of 'x'.

Question (PLZ ANSWER)
If I get a scholastic art and writing award (winner earns a scholoship) every year will that help me to get to yale. This is a curious question becuase I'm doing this this years and every year till my senior year.

Math
Joe Diamond deposited $9,000 into the Rong Bank that pays 12 percent interest, compounded quarterly. Calculate the amount Joe will have in his account at the end of 4 years. (Using the Calculator)

chemistry
10). What is the molarity of an HCl solution if 42.5 mL of a 0.110 M KOH solution is needed to titrate a 25.0mL sample of the acid? A) 0.187 M HCl B) 0.587 M HCl C) 0.0647 M HCl D) 5.35 M HCl E) 1.70 M HCl

chemistry
9). What is the balanced equation for the acid–base reaction of nitrous acid with lithium hydroxide? LiOH(aq) + HNO3(aq) H2O(l) + LiNO3(aq) Li(OH)2(aq) + 2 HNO3(aq) 2 H2O(l) + Li(NO3)2(aq) LiOH(aq) + HNO2(aq) H2O(l) + LiNO2(aq) 2 LiOH(aq) +

math
Three men (Tom, peter, and jack)and three women (Eliza, Anne, and Karen) are spending a few months at a hillside. They are to stay in a row of nine cottages, each one living in his or her owm cottage. There are no others staying in the same row of hoses.In

geometry
ok what is the value if x (2x+24) degrees on the top of the lines that form a X and on the other side of the angle is 142 Degrees.. I know you have to have 180 degrees but those x's confuse me. I have this figure out and narrowed down to two answers....

physics
For no apparent reason, a poodle is running counterclockwise at a constant speed of 5.40 m/s in a circle with radius 2.3 m. Let v_1 be the velocity vector at time t_1, and let v_2 be the velocity vector at time t_2. Consider change in v = v_2 v_1 and

Organic Chemistry
Look up the density of nbutyl chloride (1chlorobutane). Assume that this alkyl halide was prepared instead of the bromide. Decide whether the alkyl chloride would appear as the upper or lower phase at each stage of the separation procedure: after the

Fitness and Safety
Are these right ? 7. Which major muscles are used in your arm when you pick up a bowling ball and throw it down a bowling lane? Name 4. 1. Pectoralis 2. Trapezius 3. Deltoid muscle 4. Triceps 8. Which muscles in the legs are used to do a jumping jack

calculus
F(x)=e^(3x/2) Let R be the region between the graph of f and the xaxis on the interval 0 to 1 . Find the volume V of the solid of revolution generated by revolving R about the xaxis. Give both exact (symbolic) and approximate (numeric) answers.

math factoring
factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3

geometry
The radius of the inscribed circle is equal to twice the area of the triangle divided by the perimeter of the triangle. Prove that this relationship is true for the inscribed circle in any right triangle.

math
The of population Oak Forest is increasing at a rate of 2% a year. If the population is 64,242 today, what will it be in 3 years?

Chemistry
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=infinity. I don't know how to solve this

geometry
pq and pr are opposite rays. If pq is represented by 4x + 26 and pr is represented by 2x+34, find x

Math
find the vertex line of symmetry the minimum naximum value of the quadratic function and graph the function f(x)=2x^2+2x+2.

statistics
Before 33 33 38 33 35 35 40 40 40 31 After 34 28 25 28 35 33 31 28 35 33 Ten different families are tested for the number of gallons of water per day they use before and after viewing a conservation video. Construct a 90% confidence interval for the mean

math
a carpenter was putting up a shelf. the shelf needed to be 87 centimeters long but the piece of wood she had was 1 meter and 28 centimeters long. her saw was 46 cm long. how much did she have to cut off the piece of wood?

math
Subtract simplify by collecting like radical terms 2square root symbol 50 2 squareroot symbol 2.

physics
A propeller spins at 1850 rev/min. (a) What is the angular velocity in rad/s? (b) What is the angular displacement of the propeller in 4.10 s?

business math
Vail Ski Shop received a $1,201 invoice dated July 8th wiht 2/10, 1/15, n/60 terms. On July 22, Vail sent a $485 partial payment. What credit should Vail receive? What is Vail's outstanding balance?

physics
the roof on a house rises 1 .00 m over a horizontal distance of 3.5 m. a 71 kg roofer stands on the roof. is the frictional force that keeps the roofer from slipping equal in magnitude to fparallel or fperpendicular? what is the magnitude of this force?

math
eight pairs of data yield the regression equation y^1=55.8+2.79x. What is the value of y for x=5.6?

math
Fresh Grapes contain 80 percent water by weight and 20 percent juice, whereas dried grapes contain 15 percent water by weight with the rest juice. How many punds of dried grapes are needed to yield the same amount of juice as 34 pounds of fresh grapes?

physics
A 68 student consumes 2500 Cal each day and stays the same weight. One day, he eats 3500 Cal and, wanting to keep from gaining weight, decides to "work off" the excess by jumping up and down. With each jump, he accelerates to a speed of 3.4 before leaving

math
The sum of three numbers is 81 and their ratio is 3:7:17. What is the value of the smallest number?

science
How do some fungi help plants grow larger and healthier? Some fungi help plants grow larger and healthier when their hyphae into or on a plant's roots. The hyphae spread out and absorb the water and nutrients the plants needs.

Algebra
Elimination method: x+5y=13 2x5y=19 ( , )

physics
A diver, below the surface of a lake, notices that no light appears to be coming toward her greater than the angle è, measured from the vertical. If the index of refraction of water is 1.33, what is the angle è (which is the critical angle of total

Chemistry
Consider the following reaction: 2NaCl(aq) + H2O(l) > Cl2(g) + H2(g) + 2NaOH(aq) A 10.0g sample of sodium chloride was placed in 10.0 g of water. If 3.85 g of Cl2 was obtained, what was the percent yield of Cl2?

chemistry
Potash is composed mainly of potassium carbonate, K2CO3. If 1.000g of potash reacts with sulfuric acid to produce 145 mL of carbon dioxide gas at STP, what is the percentage of potassium carbonate in the marble sample? K2CO3 + H2SO4 ==> K2SO4 + H2O + CO2

Geometry
To reach a campsite, a hiker first walks for 2 mi at a bearing N 40 degree E. Then He walks 3 mi due east. What are the magnitude and direction of his hike from his stating point to the campsite? Round the distance to the nearest tenth of a mile and the

math
what do the fans sing at university of california football games?

SOCIAL STUDIES!!!
how did slater and lowell contribute to industry in the united states?

math
Subtract simplify by collecting like radical terms 6square root symbol 75 7square root symbol 3 I cant figure out how to square 75?

Calculus Help Please
Ship A is traveling west at 40kkm/h and ship B is traveling north at 30mk/h. Both are headed for the Los Angeles Harbor. (a) At what rate are the boats approaching each other when ship A is 3km and ship B is 4km from the dock? (b) At what rate would the

Accounting
how and what do I post from the cash receipts journal to the general journal

chemistry
complete combustion of a 0.0100mol sample of hydrocarbon, CxHy, gives 1.344 L of CO2 at STP and 0.720 g of H2O. a. what is the molecular formula of hydrocarbon? b. what is the empirical formula of hydrocarbon?..

geometry
AB intersects CD at E. If m

geometry
the angles in a hexagon are 135, 62, 151, 140, x and x +6. find the measure of the missing angles.

geometry
If the measure, of the three angles of a triangle are represented as

chemistry
valerie placed 1.0g of salt into one beaker, 1.0g of soil into a second beaker, and 2.0g of sugar in a third beaker. She then added 200mL of water to each beaker and stirred the contents for 3 mintues. How many compounds and how many mixtures did Valerie

spanish
how would u responed too Adonde vas os lunes a las 8:30 de la manana?

Math
Art Newner wants to know how much he will have to invest today in order to receive an annuity of $8,000 for three years if interest is earned at 10 percent annually. He will make all his withdrawals at end of each year. How much should Art invest? (Using

Math
Abe Frill wants to attend AVP Tech. He will need to have $15,000, 7 years from today. How much should Abe put in the bank today (12 percent quarterly) to reach his goal in the future? (Using the Calculator)

chemistry
The [H3O+] in a wine bottle is 3.1 10–2 M. What is the [–OH] in this wine?

phiscal science semester 2
For the reaction C2H6+O2>CO2+H2O what are the coefficient to the chemical substance it goes with for balanced reactions?

math
i need help on arrays and an expanded algorithm please wright as asap please

chemistry
7). The pH of a solution is 2.89. What is the [H3O+]? A) 1.3 X10–3 M H3O+ B) 1.3 X 1012 M H3O+ C) 7.9 X101 M H3O+ D) 7.9 X 10–13 M H3O+ E) 1.9 M H3O+

chemistry
6). Which solution has the lowest pH? A) 1.3 X10–8 M –OH B) 1.0 X 10–7 M –OH C) 5.1 X10–5 M –OH D) 3.9 X 10–8 M –OH E) 2.3 X 10–3 M –OH

Math
Reduce the fraction to simplest form 2x+2/6x^2+16x+10 (the 6x is squared I think that's how you show it)

algebra
What number must be added to each of the numbers 0, 8, and 32 so that they form consecutive terms of a geometric sequence? I don't understand what the question is asking first of all. The answer is 4. Help is much appreciated.

Fitness and Safety
3. How does it benefit your muscles to do different types of strength training activities? 4. What are some of the challenges or disadvantages of using weight machines? 5. What's the difference between dumbbells and barbells?

Fitness and Safety
5. Is it true that when you lift weights your muscles get bigger from more muscle cells?

chem
Classify as a strong, weak, or non electrolyte. FeCl2, HBr, HCN, CaCO3. I put FeCl2 and HBr as strong, HCN as weak and CaCO3 as non.

algebra
37.051 is 55.3% of what number.

math
multiply and simplify k^2+10k+16 k^2+6k __________ x _________ k^2+14k+48 k^2+5k+6

American Government
Please explain what conditions cause new democracies to survive and thrive or to fail ?

Math
Multiply (2ã74ã2)(4ã7+8ã2)

Chemistry
How has the equilibrium been modified in Haber Process? what is the heat value for the following exothermic reaction : Hb(aq) + O2(aq) = HbO2(aq) + (Heat ?)

Physic
A machine part is made from a uniform solid disk of radius R = 0.161 m and mass M = 7.75 kg. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from the

math
solve sin t= .6 on the interval 0

calculus
A force of 1300 lb compresses a spring from its natural length of 16 in to a length of 10 in. How much work is done in compressing it from 10 in to 6 in?

7TH GRADE MATH
please help solve 5(9K8) + 2 (8+6K)

business math
Vail Ski Shop received a $1,201 invoice dated July 8th wiht 2/10, 1/15, n/60 terms. On July 22, Vail sent a $485 partial payment. What credit should Vail receive? What is Vail's outstanding balance?

geometery
If X = 2 inches, Y = 4 inches, and Z = 4 inches, what is the surface area of the box?

bio check plz plz plz
in human (2n=46) mitosis result 2 cell with 23 chromoses and meosis result in (n=23) 4 cell with 46 chromoses... is this statment true ? please help me ....

MATH
A bag contains 5 slips of paper. On each slip is written the name of a member of the Avila familyMr.Avila,Mrs.Avila,their son,or one of their 2 daughters. Find the probability of each outcome if you take a piece of paper out of the bag without looking.

physics
A room has the dimensions 3.0 m by 4.0 m by 4.0 m . The air in the room is 79% N2( MW= 28) and 21% O2 (MW = 32). At a temperature of 20 degrees Celsius and pressure of 115 kPa , what is the mass of the air in the room in kilograms?

English
I urgently need you to check these sentences. I have a few doubts on how to vary past perfect tenses (when turning the summary into the present). I included my doubts using question marks. Thank you. 1) After moving the bed aside he takes three

vector calculus
Show that the given line integral is independent of path.Then, evaluate the line integral I by finding a potential function f and applying the Fundamental Theorem of Line Integrals. I=ç_{(0,0)}^{(1,2)}(x+y)dx+(xy)dy

Chemistry
how do you expect the following series of compounds to compare in behavior in the two tests? The two tests performed were... A. Sodium Iodide in Acetone (SN2) B. Silver Nitrate in Ethanol (SN1) 1. CH3CH=CHCH2Br 2. CH3C=CHCH3 3. CH3CH2CH2CH2Br I Br

science infectious disease
i have a project to present on salmonella can you help me find website that is understandable 7th grade i can use

English
Can you please check these sentences for me. It's really urgent. 1) Our science teachers are enthusiastic about your proposal of holding our first meeting in Italy. 2)However, prior to our meeting, the head of our science department would like to discuss

math
You teach 40 students. Blue is a favorite color of 22 studetns; 19 own cars; 13 like flowers; blue is the favorite color of 10 students who own cars; blue is the favorite color of 7 students who like flowers' 8 own cars and flowers; and blue is the

Geometry
A circular flower bed is sectioned off. The arc intercepted by the 120 degree central angle is to be bordered with marigolds. The garden has a diameter of 63 inches. Circumference = Pi * diameter, Pi = 22/7. If you plant the marigolds about eight inches

Science
Does the Earth and moon have large molten core or only 1 of them does? I think the Earth only has large molten core

phi 200
Our text discusses the challenge relativism presents to various ethical and religious viewpoints. Consider a specific moral question which might make it difficult to accept the relativist's response. State the moral issue involved, and provide an

Physics
A force of 580 N is needed to be applied on a rope at an angle of 30 to the horizontal in pulling a crate with a constant velocity across a horizontal plank. What is the mass of the crate if the coefficient of kinetic friction is o.25?

math
change the decimal to a mixed number(simplify) 23.56

spelling
writers workshop using commas

vocabulary
why the united states is an example of a civilization?

geometry
The slope of any line perpendicular to , where A(0, 3) and B(4, 9) are two points on the line, is m =

Computer(Math)
Let C { x#y x,y ∈ {0,1}* and x ≠ y} show that C is a context free Language...

Cars,position,direction,and speed
How can a car driving on sand Chang it's position,direction,and speed

math
the favorite foods of a selected group of 5 year olds. A total 5,280 childern were polled. How many children chose pizza? 40% were pizza, pasta 30%, cheese 12%, french fries 14% undecided 4%

physics
How much work would be done if a 50 kg block was pulled horizantally at a 30 degree angle to the horizantal for 10 meters. a) With zero friction b) With 100N friction

accounting
1,150,000 in cash. How long would it take them to accumulate $2,000,000 in cash? Assume an interest rate of 5 percent.

math
the favorite foods of a selected group of 5 year olds. A total 5,280 childern were polled. How many children chose pizza? 40% were pizza, pasta 30%, cheese 12%, french fries 14% undecided 4%

Physics/Science
At what point in the swing of a pendulum is the maximum amount of the ball's motion transferred to the object it hits? (I think it's at its lowest swing point but I'm not completely sure.) And what does this "kinetic energy" depend on?

math
rodney opens a saving account and deposits 3000 dollars. the saving account earn 5% yearly simple terest. If rodney does not deposit any additional money into the account, how much compound interest did she earn over all 3 years

Math
I lost the last link.... Triangle DEF has D= 58 degrees, E= 41degrees52', and f(little f)= 0.032 microns. Find d 52/60 (to get the inches gone) 58+41.86(repeating for quite a fe2 digits) 18099.86666667=80.13333 So my equation is f Sin85/Sin80.1333 How

math
factor quadratic equation x^220x10,925

Stats
A simple random sample will be obtained from a normally distributed population. Find the minimum sample size needed to be 99% confident that the sample standard deviation s is within 5% of the standard deviation. Is such a sample size practical in most

math
Factor 189t+t^2 I don't think this is factorable help

biology
divides the new plant cells in telophase

Intermediate algebra
Hello, I am kind stuck on this question In the lab you discover a relationship between the temperature of the air and the speed of sound. You find the speed of sound is never lower than 331 m/s and increases by 60% of the current temperature. a. What is

math
solve v^2+v6=0 Would v=2

Physics
A great white shark with a mass of 3000 kg swimming at 3.00 m/s swallows a 250 kg fish at rest. What is the speed of the great white shark right after swallowing the fish?

chemistry
Volume of 0.185 mol . L1 and 0.74 M

calculus
Consider the function whose second derivative is f''(x)=7x+6sin(x). If f(0)=2 and f'(0)=3 , find f(x) .

Business
Do you think unskilled labor is just a commodity or input

math
One box holds 16 crayons another box holds 24. Write a sentence using words that compares the crayons in the two boxes.

calculus
find the area of the region under y=6 ln(3 x) and above y=8 for 4

Math
divisible by 15,27,36,16,28,57,102,268,4518,93

accounting
refer to christmas company. how many units are to be tracked for forming?

com 172
Review the following passage and paraphrase it in the following box. Use the reference to create an appropriate APAformatted intext citation. Additionally, include one direct quotation. One of the most valuable skills a student can develop is focus.

calculus
Let f''(x)=5x+5 with f'(2)=1 and f(2)=2. Find f'(x) and f(3)?

Calculus
Given f"(x)=25sin(5x)and f'(0)=0 and f(0)=4. Find f(pi/2)

Vision Math
Explain to me how this is true: Six people are given 1/10 of a veggie pizza and 2/5 of the pizza is left how is that true?

Math
Your search for Determine the number of square meters of vinyl needed to line the inside of a right rectangle swimming pool. The pool is 7m long, 4m wide, and has a uniform depth of 2.5m returned no results.

physics
1 How are transformers made efficient using the key idea of "eddy's current" and "laminate" 2there is a copper tube thee are 2 waights the same mass, one travels faster down the tube and one travels slower down the tube. why is that. can you please

social studies
how did turnpikes,canals,and railroads affect the way that people in different states interacted

Physics
A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of è = 41.0° to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the

Math
how do I factor 18w^2+24wt+8t^2

geometry
If the area of a trapezoid is 209 square yards and the bases are 15 yards and 23 yards. What is the height of the trapezoid?

Chemistry
At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O?

English
Hello. Please tell me if it's possible (and natural) to say: 1)the city central square; 2)the central city square; 3)the city's central square. The meaning: the central square of the city. Thank you for help.

ECOMMERCE
Imagine that you own a small, local clothing store along the Jersey Shore boardwalk and decide that you want to engage in eCommerce. Write a 45 page paper on the following: 1. Imagine that someone has offered you $1,000 to buy your domain name shortly

PHYSICS
If the dummy is thrown forward with a force of 130.0 n while simultaneously being hit from side with a force of 4500.0n what force will the seat belt have exert on the dummy to hold in seat

ALGEBRA
A newspaper article discussing whether Social Security could be cut offered the information shown in the figure. Use the information in these graphs to answer the question. What is the difference between the amount of money collected from Social Security

English 7
Is there any infomation that tells how Rosa Parks became a civil rights leader (3 supporting deatils). Thank You!!!

math
the populaaion of oak fores is increasing a a rae of 2% per year. If the populaion is 64,242 today, wha will it be in three years?

socials
the three turning points in world war 2 i think that is El Alemein, stalingrad, midway. stalingrad where hitler tried invade ussr but he failed.

ALGEBRA
A newspaper article discussing whether Social Security could be cut offered the information shown in the figure. Use the information in these graphs to answer the question. How many workers pay into Social Security for each person getting benefits in 2000?

math factoring
factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3

socials
teacher talk about wolf packs and i not know what that is. i think that submarines used by Germans. what difference between that and u boats?

algebra
if $192 increased to $363 in 2 years. what is the interest rate

social studies
why did railroad construction end canal building

socials
what bring americans in world war 2? I think invasion of pearl harbour bring them in world war 2.

English
Do you think unskilled labor is just a commodity or input

Business
Can anyone tell how to analyze a committee meeting theoretically as it relate to leadership theory. I am having a difficult time starting.

history
What was the secret CIA operation to overthrow the Cuban Government called? Operation Seagull The Bay of Pigs operation Operation Mongoose Order 632 I think its operation mongoose?

Finance
GE issued preferred stock that had a par value of $100. The preferred stock pays a dividend of 6.50%. Investors require 5.7% today on this stock. What is the value of the preferred stock today? Round to the nearest $1. (A) $100 (B) $88 (C) $75 (D) $114

physics
A box is pushed a distance d along a ramp at a constant speed by a horizontal force, Fa. The mass of the box is m. The ramp is inclined at an angle of above the horizontal and the coecient of kinetic friction between the box and the ramp is k.

Operations Management
You are managing a breakfast and lunch only restaurant that sells allinclusive plated meals (i.e. all lunches include any protein or hot foods as well as salads and sides on a single plate). You’ve decided to try and apply “drumbufferrope”. You

Math
find the following ã(12&(6))^12

Finance
IBM's common stock has a beta of 0.85. If the expected riskfree return is 4.5% and the market risk premium is 7%. a) Calculate IBM’s required rate of return (10pts) b) Assume IBM’s actual realized return is 15%. Calculate its abnormal return (i.e.

Operations Management
6. You manage the Distribution Center shown in the diagram below which, for one particular product, supplies only the two retail locations, A and B. You want to convert from your old Reorder Pointbased ordering format to Pull Replenishment. It takes you 2

Algebra
Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280300 weight Canada

history/english
are southerners considered to be immigrants?

Science
Okay, say im doing a science fair project, and I am not really good at coming up with questions, what would be a good question to ask about Newtons First Law of Motion

math
julia shoots 40 baskets and makes 30 what percent did she make

Pre Algebra
I am having a problem with slopes and intercepts problems. Write each equation in slopeintercept form. Find slope and yinercept. 3x  y = 14

trig
Write cot(t) in terms of sin(t) if the terminal point determined by t is in the first quadrant. Do not leave a fraction inside a radical or use absolute value.

precalculus
graph the parabola y=2x^26x3. plot point on the parabola A[1,7] and draw a line through A with an angle of inclination equal to 30 degrees. then find the equation of the line and its second point of intersection B, with the parabola

Math
I need help with an equation problem. Write the equation of the line that passes through each pair of points. (2, 7) and (3,8)

math
You have used 225 of your 500 sheets of printer paper. What fraction of the paper have you used?

Algebra
To determine the question use Frogs F and G are 5cm to cube and 40cm to cube. a. Ratio What are ratio volumes and surface areas for a frog? (The formula for figuring out this data A correlation V square=2/3 Ratio Volumes: Surface areas: b. Toxin Let us say

Health
26. When someone is choking you need to perform chest compressions. False? 31. The female reproductive cell is called an egg. False? 34. If the egg is not fertilized, then conception occurs. False? 45. The embryo is a blood vesselrich organ that forms

math  Please help me to understand
The average selling price of homes in a certain city is $356,300. Assume the variable is normally distributed with a standard deviation of $64,600. If 396 homes are for sale, how many homes will sell for more than $325,000? (Round up to the next whole

Physics Help Please
Issac has to do 1000J of work on a 5kg box, and all the work he did simply went into lifting it above the ground. How high above the ground will the box be when all the work has been done?

physics
In a European country a bathroom scale displays its reading in kilograms. When a man stands on this scale, it reads 90.4 kg. When he pulls down on a chinup bar installed over the scale, the reading decreases to 79.5 kg. What is the magnitude of the force

Calculus
Hello, could someone please help me with this problem? I'm a little stuck with it. Thanks, Isaac A rectangle is to be inscribed with its base on the xaxis and its other two vertices above the xaxis on the parabola y=9x^2 (a) find the dimensions of the

phsyics
A 40.6kg crate rests on a horizontal floor, and a 69.1kg person is standing on the crate. Determine the magnitude of the normal force that (a) the floor exerts on the crate and (b) the crate exerts on the person.

calculus
w=4e^sqrt(s) Find the derivative of the function.

English
Hello. Do you think it is possible to say: "to post photos in the press" or is it "to publish photos in the press"? Thank you for help.

Social Studies 9
PLEASE i really NEED HELP; and i need this by TOMORROW. no links please . How and why was Hudson bay company established ?

Math
∛(y^13) ∛(16y^14)Multiply and simplify assume all expressions under radicals represent non negative number My friend helped me she said azanswer is 12(y^13)(square root sybol y)

Calculus
Sand is being dumped from a conveyor belt at a rate of 20 cubic ft/min into a pile the shape of an inverted come whose diameter and height are always the same. (a) Find the rate of increase of the height when the pile is 10ft high. This is a 2 part

Geometry
The figure is formed from tectangles. Find the total area 8Ft 5ft 3ft 3ft I just can't figure this out. or I am having a blond moment

statistics
Suppose that weights of 5th grade elementary boys are normally distributed with mean µ =90 lbs and variance ó2 = 4 lbs. Find the weight that corresponds to Q3 and interpret this measure of position.

Chemistry
Determine the final end (final) value of n in a hydrogen atom transition, if electron starts in n = 1 and the atom absorbs a photon of light with an energy of 2.044 X 10^18J? A) 3 B) 4 C) 2 D) 6 E) 5

physics
(a) What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 129 km above Earth's surface? (b) What is the period of revolution? All right, I swear I have done everything and cannot figure this out!

calculus
Find the derivative. f(x)=ln(8e^x) I got e^x/8e^x but it was wrong. WHAT DID I DOOOO?!

Social Studies 9
PLEASE HELP ! :why was hbc successful as a business enterprise right from the start ?

Phsyics
A 40.6kg crate rests on a horizontal floor, and a 69.1kg person is standing on the crate. Determine the magnitude of the normal force that (a) the floor exerts on the crate and (b) the crate exerts on the person.

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

reading
what word goes with lunar?

Geometry
The piolet of a singleengine airplane flies at a constant speed of 200 km/h at a bearing of N 25 degree E. There is a 40 km/h crosswind blowing southeast (S 45 degress E). What are the plane's actual speed and direction? Round the speed to the nearest

Physics
What is the magnitude of the gravitational field at the surface of a neutron star whose mass is 1.64 times the mass of the Sun and whose radius is 9.1 km?

6th grade science
I am pretty confused about mechanical weathering and chemical weathering. what is the easiest way to remember the differences of these 2 things

business math
William Bennett earns $12,800 per year. He is paid 12 times per year and claims 1 exemption. His state taxes him at a 3% rate. How much tax is withheld per pay period?

Finance
If you were general manager of a division, on which three key ratios would you choose tohave your unit's financial performance evaluated?

Dymanics
10tan theta= .5+1/2costheta + 2sintheta How do I simplify the right side of the equation.

SOCIAL STUDIES!!!
what was eli whitneys main contribution to manufacturing

8th grade math
The sum of three numbers is 81 and their ratio is 3:7:17. What is the value of the smallest number?

statistics
Composite ACT Scores NonAthletes Athletes 25 21 22 22 27 21 19 29 24 25 26 27 24 30 19 25 27 23 24 26 17 23 23 a. Test an appropriate hypothesis and state your conclusion. Use alpha = .05 for your test. Show the null and alternative hypothesis, the

Algebra (direct variation)
the value of y varies directly with x, and y=2 when x=4 Find y when x=8 2=k(4)

com/150
How could I improve this thesis statement? “Most people do not feel it is their obligation or responsibility; however, there are personal benefits from community service.”

Biologu
Define posterior and anterior

Math 110
finding the standard deviation of 15, 20, 30, 35

Calculus AB/AP
A tank with a rectangular base and rectangular sides is to be open at the top. It is to be constructed so that its width is 4 meters and its volume is 36 cubic meters. If building the tank costs $8 per square meter for the base and $4 per square meter for

Calculus
Hello, I posted a question earlier but now I'm stuck on the second part of the question. Please help me. Sand is being dumped from a conveyor belt at a rate of 20 cubic ft/min into a pile the shape of an inverted cone whose diameter and height are always

BUS 640
Bridget's choice  theory of consumer behavior

SOCIAL STUDIES!!!
in what ways did whitneys system improve products

Physics
8. In an ultracentrifuge a solution is rotated with an angular speed of 3000 rev/sec at a radius of 10 cm. How large is the centripetal acceleration of each particle in the solution? Compare the centripetal force needed to hold a particle of mass 105 gm

English
Could you please check these sentences? 1) Your paragraph lacks an introduction as well as a conclusion. You referred to the requested topic only near the end of your paragraph. 2) You wandered off the subject focusing your attention on the description of

math
how do you find what the percent of a number is? IE 23% of 40.000.00. 23*40.000.00.

statistics
a test has a mean score 73 with standard deviation of 12.students with scores greater than 85 receive an A. What is the percent of the students would we expect to get an A? assume the normal distribution

MATH HEPL
solve (+14)(x17)(x+6)>0 I have a solution for x>17 but the answer on my paper asks for a solution set {xline x } help how do I write this

geometry
what is the measure of the sum of the exterior angles of an ngon?

cja/334
1,050 to 1,750word paper in which you describe the research process. Include the following: Include new terminology learned from the reading. How will this new terminology and knowledge apply to a career in criminal justice? How can not knowing the

physics,
A student presses a book between his hands The forces that he exerts on the front and back covers of the book are perpendicular to the book and are horizontal. The book weighs 30.8 N. The coefficient of static friction between his hands and the book is

math
Find the following 12square root symbol(6)12 Help

math
using 100 ft of fence material an dbuilding a regular gexagon garden, what is the area of the garden?

Science Fair
Is there any science fair contests that are going on in spring valley????

chemistry
Consider the following entities: Ar, SiH3F, Xe and CClF3. which one will diffuse the fastest?what is rms speed (m/s) of the slowest moving atom at 25 C..?

geography
Is this correct? 1.The prime meridian passes through both the north and south pole. 2. The Tropic of Cancer is to the Tropic of Capricorn as the Arctic Circle is to the Antarctic Circle?

CJA/334
1,050 to 1,750word paper in which you describe the research process. Include the following: Include new terminology learned from the reading. How will this new terminology and knowledge apply to a career in criminal justice? How can not knowing the

statistics
If scores are normally distributed with a mean of 3.06 and a standard deviation of 0.84, what percent of the scores is: (a) greater than 3.9? (b) less than 2.22? (c) between 2.22 and 3.9?

Math
How does a tally chart help you to display data?

english
What is the word ball in this sentence? The young boy played ball in the yard. adverb?

science
2 questions. What part of the cell contains chlorophyll? what do plants usually have one large one of and animals may not have any or have several smaller ones?

chemistry
if u place 10 L of propanol (C3H8O)in a sealed room that is 7.5 m long , 3 m wide and 3 m high, will all the propanol eveporate?if some liquid remains, how much will there be?the vaopr pressure of propanol is 10.7 torr at 25 C, and the density if the

chemistry
whcih of the folllowing values is the amount of sodium nitrate that can be dissolved in 100mL of water of 40 degrees celcius? A 0g B40g C100g D130g

statistics
If scores are normally distributed with a mean of 3.06 and a standard deviation of 0.84, what percent of the scores is: (a) greater than 3.9? (b) less than 2.22? (c) between 2.22 and 3.9?

Statistics
The average hourly wage of employees in a large nationwide industry is $12.96. Assume the variable is normally distributed, with a standard deviation of $4.46. In a randomly selected sample of 10,000 such employees, how many of them (correct to the nearest

Calculus
Find the RMS value of the function i=15[1e^(1/2t)] from t=0 to t=4 A. 7.5[sqrt(1+4e^2 e^4)] B. 7.5[sqrt(42e^2 +e^4)] C. 7.5[sqrt(4+4e^2 e^4)] D. 7.5[sqrt(52e^2 +e^4)]

mathcollege URGENT**
in sentence form using one variable and one equation/inequality solve: sue makes $15/hour tutoring and averages $10/hour waitressing. Out of 30 hrs working time, what is the minimum # of hours she should tutor if she is to make at least $475?

Biology
Can you explain what the quality of the reverse transcriptase in the HIV virus has to do with the problem that there is still no vaccine against the HIV virus?

math
The average selling price of homes in a certain city is $356,300. Assume the variable is normally distributed with a standard deviation of $64,600. If 396 homes are for sale, how many homes will sell for more than $325,000? (Round up to the next whole

chemistry
What is the wavelength of a 2500 kg truck traveling at a rate of 70 km/h?

english
What is it called in a movie when the camera is focused just on one person, to make it look dramatic and emotional?

Math
Convert to decimal notation 8.46*10^7 does this equal 84,600,000 Is this correct/

math
both my numerator and denominator are 1 digit numbers. My numerator is the GCF of 24 & 30. Who am I.

English
I selected the five I was most doubtful about. Thank you. 1) Your paragraph lacks an introduction as well as a conclusion. You referred to the requested topic only near the end of your paragraph. 2) You wandered off the subject focusing your attention on

geometry
There is a triangle with angle a (x+10), and angle b is (2x), and angle c is (2x30). What is the measure in degrees of angle B

Statistics
I have the answer to this question,, but i'd like to know how to do it. I need help finding z. Any help would be great. Thanks. Children and McDonaldfs In a Sports Illustrated for Kids survey of 603 children, 43% preferred McDonaldfs for fast food. The

Chemistry! HELP!
Explain why the shape of a molecule depends on the electron pairs around the central atom.

chemistry
which procedure is a chemical change that may be used to break down a compound?

ALGEBRA
Why are there two possible answers to an absolute value equation?

math
what is 2 times 5

Health
26. When someone is choking you need to perform chest compressions. False? 31. The female reproductive cell is called an egg. False? 34. If the egg is not fertilized, then conception occurs. False? 45. The embryo is a blood vesselrich organ that forms

math
Jim Hunter decided to retire to Florida in 10 years. What amount should Jim invest today so that he will be able to withdraw $25,000 at the end of each year for 30 years after he retires. Assume he can invest money at 9% interest compounded annually.

Mechanics
At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a constant acceleration of 0.9 rad/s^2 until it reaches 70 rpm. The motor is then disconnected. How many revolutions are completed at t = 20 s?

math
Test these conjectures. Give three examples. Explain if the conjecture is correct or incorrect. 1. If a number is divisible by 4, it is always an even number._________________________________ 2. All multiples of 5 have a 5 in the ones

Comprehensive English
We have a final exam coming up with a comprehensive essay including use of each of the types of essays (strategies) you studied this semester— o Critique (pp. 1922) o Research (pp. 378380) o Comparison (pp. 217218) o Illustration (pp. 186187) o

English
Hello. Please help me with the correct word order: 1)The president says that now / at the moment the government is working on a new plan. 2)The president says the government is now working on a new plan. 3)The president says the government is working on a

math
just the basic formulas for area, length, and width

Physics
Four particles in the xy plane have the following masses and coordinates: 1 kg at (3 m, 3 m), 2 kg at (2 m, 4 m), 3 kg at (3 m, 2 m) and 4 kg at (3 m, 4 m). Find the total moment of inertia about: xaxis? yaxis? zaxis?

physics
if you want to reach a speed of 13 m/s at the top of the looptheloop, how much power must you supply to the gokart?

Physics
Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through: a) the midpoint of the rod; b) the center of mass of the system of

Finance
A portfolio consists of three stocks. The weight, expected rate of return and systematic risk for each stock are provided in the following table. Stock Investments Expected return A $7,500 20% B $10,000 15% C $2,500 10% Beta 1.5 1 0.9 a) Calculate the

Physics
A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? rad/s^2 b) How many revolutions does it make in 15 s if it starts at rest?

Geometry
Explain whether the following statement is a valid definition: “A 30° angle is an acute angle.” Use the converse, biconditional, and at least one Euler diagram to support your answer.

chemistry
if you combine 2 compounds together will you make a mixture? Such as salt and water.

science anyone
I was wondering if someone could look at my answers and let me know if they sound okay. I put them in at 6:48 and 6:54 today. I understand if you can't help!

 Math
John Receive a 10,000 loan, with an interest rate of 6 %, for 6 years. What is the principal amount paid on the 6th through 9th payments?

Physics
A block of mass 3.1 kg hangs vertically from a frictionless pulley of mass 5.9 kg and radius 14 cm. Treat the pulley as a disk. Find: a) the acceleration of the block; b) the tension in the rope; c) the speed of the block after it has fallen 55 cm,

Math
John Receive a 10,000 loan, with an interest rate of 6 %, for 6 years. What is the total amount of interest paid to the bank?

geometry
Ø What is the effect on the area of a triangle if the base is doubled and the height is cut in half? What happens to the area, if the base is doubled and the height remains the same?

Physics
Two blocks with masses m1 = 3.9 kg and m2 = 6.7 kg are connected by a string that hangs over a pulley of mass M = 2.2 kg and radius R = 0.11 m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the

English
(This homework question has been removed because it was copied directly from a test.)

statistics
Suppose we have a set of blood pressures with a mean of 110 Systolic, and a sample standard deviation of 15 points. If we assume a normal distribution of Systolic blood pressures, then between what two values can we be assured 99.7% of all Systolic blood

Math
John Receive a 10,000 loan, with an interest rate of 6 %, for 6 years. What is the interest amount paid on the 5th payment?

algebra
find the vertex, line of symmetry,and the maximum or minimum value of f(x). Choose the graph that represents f(x)=1/4(x+9)^2+7

American Government
Share two examples in American history of how the people of America shifted their ideologies from one set of beliefs to another. Why did this happen? What were the political, economic and social conditions that led to this shift?

Math
John Receive a 10,000 loan, with an interest rate of 6 %, for 6 years. What is the principal amount paid on the 1st payment?

computer
I have a facility that is 200 feet long by 120 feet wide, I have 45 employees all on the same floor. I want to plan a pilot network , what quanity and placment would I need ? What pitfalls should I avoid? what standard would you recommend?

Math
John Receive a 10,000 loan, with an interest rate of 6 %, for 6 years. What is the loan's monthly payment amount?

physics
A 65.0kg skier coasts up a snowcovered hill that makes an angle of 27.4° with the horizontal. The initial speed of the skier is 6.37 m/s. After coasting 2.07 m up the slope, the skier has a speed of 4.06 m/s. Calculate the work done by the kinetic

English
You have already checked these sentences. I just wanted to know if I could use the present simple to narrate it. Thank you. 1)The police appeared (appear OR appears) completely satisfied that nothing criminal had occurred in the house. However, they

physics
In 5.20 h, a balloon drifts 6.5 km north, 2.00 km east, and 2.76 km in upward elevation from its release point on the ground. (a) Find the magnitude of its average velocity. . km/h (b) Find the angle its average velocity makes with the horizontal. . °

physics
A 62.7kg person jumps from rest off a 2.98mhigh tower straight down into the water. Neglect air resistance. She comes to rest 1.09 m under the surface of the water. Determine the magnitude of the average force that the water exerts on the diver. This

Health Care Adminiastration
Metropolis currently has $1,150,000 in cash. How long would it take them to accumulate $2,000,000 in cash? Assume an interest rate of 5%.

English
Find the direct object. Chief Joseph wanted equality for his people The direct object would be "wanted" right? Since it technically receives the action of the verb.

statistics
Determine the sample size needed in order to be 95 percent confident the p, the sample proportion of HD television sets that last at least five years without a single repair, is within 0.03 of , the true proportion of sets that last at least five years

Algebra
I have19 coins that are worth a total of $1.10.If they consist only of dimes and nickels, then how many nickels do I have?

Math
John Receive a 10,000 loan, with an interest rate of 6 %, for 6 years. What is the Remaining Principal Balance after the 9tht payment?

Math
Alice Wolf wants to know how much she will have to invest today in order to receive an annuity of $6,000 for four years if interest is earned at 10 percent annually. She will make all her withdrawals at the end of each year. How much should Alice invest?

social studies
I have a few questions regarding the issue of jemaah prayer for women. We know that the prayers made in the masjidil haram is 100,000 times than other places. Yet, for a woman prayer in her house is better. 1. Does this mean that a woman’s prayer at home

Civics
Describe the differences between the House of Representatives and the Senate, and explain the historical, practical, and theoretical reasons why the framers created a bicameral Congress. *For all those who read it, you don't have to fully answer the

physics please help!!
You are lost in the woods with a friend. He's nearsighted and you're farsighted. You decide to start a fire to attract attention. Thankfully, it's a bright sunny day and you're both wearing your glasses. Whose glasses do you use to focus the sun's light to

basic math problem
the sum of three numbers is 8. the first number plus the second is 16 less than the third. the second number is 8 more than the third. find the numbers

MATH HELP!
if f(x)+(x3)^4(2x1)^3, find the value(s) of x which solve f'(x)=0

math
a freight train leaves detroit traveling east at a speed of 65mph. one hour later, a passanger train leaves traveling wst a 85mph. how long will it take for the trains to have traveled the sam distance?

gemetry
If EF = 9x + 14, FG = 56, and EG = 250, find the value of x. so on a straight line marked E then F in the middle and G on the other end. I am so confused

Social Studies
The largest island in the world, locates near Canda is called______. I think it's Greenland

Math
Jim Hunter decided to retire to Florida in 10 years. What amount should Jim invest today so that he will be able to withdraw $25,000 at the end of each year for 30 years after he retires? Assume he can invest money at 9% interest compounded annually.

maths
The equation of the circle is x(squared)+y(squared)3x 4=0.Find : (i)the coordinates of its center and the radius (ii) the coordinates of the points at which it cuts the xaxis

MATH
Y=30X+.25

calculus
A party store ordered 50 cases of balloons. The number of cases in stock t months after the order arrives is given by the equation 50e^(.9t). What is the average number (exact and approximate) of cases in stock over the same 6 months?

math
Antiderivativeofe.5x0.1x

Geometry
Anyone have the Amsco's geometry textbook and can help me out with some homework?

Mechanics Of Materials
How do you determine what distance to use to sum the moment in the loaded portion of a conjugate beam? I think on the shear portions that you use [2/3]*L (center of mass for a constant density triangle), but I have no idea what to use for the... bending

English
Stupid question but i have two critiques on Robert Frost's "Stopping by Woods on a Snowy Evening", how would i write the critics points without quoting like everything they stated? The critics have made some major points but i don't want to quote

math
81,__63,__,45,__

science
Describe the process by which a fungus feeds. A fungus feeds first by growing hyphae into the food source. Then chemicals ooze from the hyphae into the food source. The chemicals break down food into substances that the hyphae are able to absorb. I used

Physics
At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a constant acceleration of 0.9 rad/s^2 until it reaches 70 rpm. The motor is then disconnected. How many revolutions are completed at t = 20 s? number of revolutions?

Physics
In the experiment, a meter is hooked up to a speaker to monitor the amplitude of the received sound. Suppose the background signal level is 15 mV, the signal is 90 mV with no attenuator and is 30 mV with an attenuator in place. Calculate pt/pi including

Math
Three neighbors are sharing a rectangular strip of land for a garden.They divide the landinto equal peices. What fraction of the land does each person get if they share it equally? Write the answer in more than one way.

Getting Work done with Pulleys
Wats the hidden shortcut to figure the mechanical advantage for a pulley system by not doing calculations? Is that using many pulleys at once? I really don't know. Just guessing.

math discrete
(a)Sarah wants to make a bracelet. She needs some beads and goes to a shop where they sell beads in exactly 100 different colours. i. How many ways can she pick 25 beads, each of a different colour? ii. How many ways can she pick any 25 beads? (b) Suppose

physic
An infinite uniformlycharged sheet with a = 2 x 10^10 C/m2 occupies the yz plane. A deuteron1 is created at a point on the +x axis 5 m from the sheet. The deuteron is produced with zero kinetic energy and is free to move. a) What is the location of the

physics
For no apparent reason, a poodle is running counterclockwise at a constant speed of 3.40 {\rm m/s} in a circle with radius 2.2 {\rm m}. Let \vec v_1 be the velocity vector at time t_1, and let \vec v_2 be the velocity vector at time t_2. Consider \Delta

Math
A bag contains 5 slips of paper. On each slip is written the name of a member of the Avila familyMr.Avila,Mrs.Avila,their son,or one of their 2 daughters. Find the probability of each outcome if you take a piece of paper out of the bag without looking.

science HElp
the covalent bond between the monomers of an enzyme macromolecules are peptide ester or phosphodiester bond question2 why urctic forx change coloring from brown in summer and white in winter . My answeers is = fox change phenotype but genotypes does not

Biology
Describe how the location of each part of the cellular respiration is diffrent in bacteria and in more complex cells?

basic question
why is it if you guys don't know the answer or if you don't want to answer a question do you guys leave it unanswered. At least you could do is comment back and say you don't know it to at least let people know that you have seen their questions.

business
how to do Legal Research for this Issue Employment Discrimination 2. Textbook reference: Chapters 5, 35 3. Possible search terms: ethics, employment discrimination, Title VII, past discrimination 4. Here is the situation: ABC Corporation decides to respond

math
stacy multiplied 5x9 andand said the answer was 44. what two patterns could you use to show that her answer is not correct?

Chemistry
What happens when hydrogen sulfide is heated through an iron sulfide solution?

chemistry
8). What is the pH of a fruit with a [–OH] = 3.2 10–9 M –OH? A) 10.5 B) 8.49 C) 3.51 D) 3.5