Questions Asked on
November 2, 2011

physics
A driver in a 2000 kg Porsche wishes to pass a slow moving school bus on a 4 lane road. What is the average power in watts required to accelerate the sports car from 30 m/s to 60 m/s in 9 seconds?
asked by Anonymous 
chemistry
Pentaborane9(B5H9) IS a colorless highly reactive liquid that will burst into flames when exposed to oxygen.The reaction is ' 2B5H9(l)+ 12O2> 5B2O2(s)+9H2O(l) Calculate the kilojoules of heat released per gram of the compound reacted with oxygen.The
asked by asembi 
chemistry
If im given mass percent and mass solvent how do I find mass solute and mass solution. example: Mass percent = 3.8% and Mass solvent 45.8 g. Find mass solute and mass solution
asked by Monique 
Chemistry
For the list of chemicals below, write complete, balanced equations for all possible reactions that would lead to an insoluble salt. KCl, BaCl2, AgNO3, Pb(No3)2, K2SO4, HNO3
asked by Helen 
Calculus
The curve y = x/(1 + x^2) is called a serpentine. Find an equation of the tangent line to this curve at the point(2, 0.40).(Round the slope and yintercept to two decimal places.)
asked by Andy 
Chem
In a coffee cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M HCl are mixed to yield the following reaction: Ag+ (aq) + Cl (aq) > AgCl (s) The two solutions were initially at 22.60 °C, and the final temperature is 23.40
asked by Joe 
algebra
Suppose you work in a clothing store. Each week you earn $250 plus a commission equal to 2.5% of your sales. This week your goal is to earn no less than $350. Write and solve an inequality to find the amount of sales you must have to reach your goal.
asked by shan 
Physics
In a slowpitch softball game, a 0.200 kg softball crossed the plate at 10.00 m/s at an angle of 45.0° below the horizontal. The batter hits the ball toward center field, giving it a velocity of 44.0 m/s at 30.0° above the horizontal. If the force on the
asked by Eddy 
Math
An airline runs a commuter flight between Portland and Seattle, which are 145 miles apart. If the average air speed could be increased by 40 miles per hour, the travel time would be decreased by 12 minutes. What air speed is required to obtain this
asked by Amy 
chemistrywavelengths
what is the wavelength in nm of radiation having a frequency of 2.45x10^9Hz
asked by plssss! 
Chemistry
1) What is the charge on the ion that Selenium forms in an ionic compound? I am not sure about this. 2) What noble gas is isoelectronic with this ion. I was thinking Krypton because it is a noble gas and it is the closest to Selenium but I am not sure. 3)
asked by Hannah 
calc
You have been hired as a marketing consultant to Johannesburg Burger Supply, Inc., and you wish to come up with a unit price for its hamburgers in order to maximize its weekly revenue. To make life as simple as possible, you assume that the demand equation
asked by lc 
Science
a bus trip covers 191 km and takes 4 hours and 15 miniutes. What is the average speed of the bus in kilometers per hour?
asked by Mary 
GOVERNMENT USA HELP FAST
The militaryindustrial complex a. consists of an alliance of the military and industry that is pitted against officials in Congress and the executive branch. b. suffered a rare defeat in 2009 when funding for additional F22 fighter jets was rejected by
asked by HM 
chemistry
a student mixes 88.6g of water at 74.3 degree Celsius with 57.9g of water at 24.8 degree Celsius in an insulated flask.What is the final temperature of the combined water.
asked by asembi 
CALCULUS HELP ASAP! please:)
If C(x) = 15000 + 600x − 0.6x^2 + 0.004x^3 is the cost function and p(x) = 1800 − 6x is the demand function, find the production level that will maximize profit. (Hint: If the profit is maximized, then the marginal revenue equals the marginal cost.)
asked by Latisha 
physics help
In this experiment you will be asked to plot a graph of mhg versus ac and fit your data to a straight line. What is the slope of the graph equal to in terms of the rotating mass MR? (Use any variable or symbol stated above as necessary.)
asked by Sarah 
Chemistry
2.) Part A.2. Suppose 6 M HCl is substituted for the 3 M HCl in the procedure. What would be the consequence of this substitution?
asked by Andy 
chemistry
A sample of O2 gas is collected over water at 23C at a barometric pressure of 751 mmHg (vapor pressure of water at 23C is 21 mmHg). The partial pressure of O2 gas in the sample collected is: (a) 21 mmHg (b) 751 mm Hg (c) 0.96 atm; or (d) 1.02 atm The
asked by Holly 
Alg 1.
The local zoo keeps track of how many dragonflies are breeding in their insect exhibit each day. Day: 1, 2, 3, 4, 5 Dragonflies: 9, 18, 36, 72, 144 It's exponential growth. A. Write an equation for the function that models the data. B. Use your equation to
asked by Vanessa 
Chemistry
In the cchemistry lab we conducted an experiment called atomic spectroscopy. We had to find the color, energy, wavelength, and 1/lamda for Hydrogen, neon, and mercury. For hydrogen: red 1.90ev 650nm 1.54e^3 red 2.02ev 610nm 1.64e^3 green 2.30ev 545nm
asked by Hannah 
maths
what is a dual intercept method and how is it applied?
asked by Karabo 
Chem!!
Consider the dissolution of CaCl2: CaCl2(s) > Ca2+(aq) + 2Cl(aq) ΔH=81.5 kJ/mol An 11.0 gram sample of CaCl2 is dissolved in 125 g water with both substances at 25.0 °C. Calculate the final temperature of the solution assuming the solution
asked by Bob 
Physics
Your teacher tosses a basketball. The ball gets through the hoop (lucky shot). Height of hoop= 3.048m height of person= 2.342 m the ball is thrown at 17 m/s at an angle of 46 degress Part 1: How long does it take the ball to reach its max height? Part 2:
asked by Tina 
Reasonableness
The flag that Nico waves has an odd number in the ones place and an even number in the tens place. RED flag 25 blue flag 14 yellow flag32green flag 6oranges flag17
asked by Harry 
Economics
The handmade snuffbox industry is composed of 100 identical firms, each having short – run total costs given by STC = 0.5q2 + 10q + 5 and short – run marginal costs by SMC = q + 10 where q is the output of snuffboxes per day. a) What is the short
asked by Pravinesh 
physical science
A certain radioactive substance has a halflife of 1 hour. If you start with 1 gram of the material at noon, how much will be left at 3:00 P.M.? At 6:00 P.M.? At 10:00 P.M.?
asked by cheryl 
math alg  inequality
2 word problems write an inequality for each problem. solve the ineequality. 1) the school record for the most points scored in a football season is 85. lawrence has 44 points so far this season. how many more points does he need to break the record? i
asked by marko 
s.s
Which of the following was not an innovation that came about do to militarization in the 1800's? A. canned food and milk B. Larger farms C. Factory production of bread D. Margarine * I chose D Margarine do you agree if not what would you choose and why?
asked by schoolfreak 
Chemistry
The sugar arabinose, C5H10O5, Molar Mass = 150.15 g/mole, was completely combusted with excess oxygen in a calorimeter. Combustion of a 0.548 g sample of arabinose caused the temperature to increase from 20.00 degrees C to 20.54 degrees C in a calorimeter
asked by Anonymous 
Chemistry
Chemical analysis show that hemoglobin contains 0.34 percent Fe by mass. What is the minimum possible molar mass of hemoglobin? The actual molar mass of hemoglobin is four times this minimum value. What conclusion can you draw from these data?
asked by Amber 
environmental science
Explain the main point concerning exponential growth and whether it is good or bad. Compare exponential growth to a logistic growth curve and explain how these might apply to human population growth. What promotes exponential growth? What constrains
asked by len 
Government US
22. The phrase that best describes the shift in America’s world position from the pre to the post World War II eras is a. internationalism to isolationism. b. isolationism to internationalism. c. containment to isolationism. d. interventionism to
asked by EricaSalazar 
math
when a 3 digit number is divided by 1digit, the estimated quotient is 50. Think of two possible numbers that can give this quotient.
asked by anthony 
chemistry
A diesel engine's piston compresses 16 cm3 of fuelair mixture into 1 cm3. The pressure changes from 1 atmosphere to 48 atmospheres. If the initial temperature of the gas was 305 K, what was the final temperature?
asked by Nikoli 
Further calculus
1) A price p (in dollars) and demand x for a product are related by 2x^2+6xp+50p^2=10600. If the price is increasing at a rate of 4 dollars per month when the price is 30 dollars, find the rate of change of the demand. 2) a) The price (in dollars) p and
asked by Alison 
physics
a 3.0 kg wood box slides from rest down a 30.0 degree inclined plane. How long does it take the box to reach the bottom of the 4.75 m wood incline? The coefficent of friction is 0.30.
asked by Michelle 
Chemistry
1) A Cobalt (II) ion has the electron configuration ____? and is ____? The answer choices were: [Ar] 3d5 4s2 diamagnetic [Ar] 3d7 paramagnetic [Ar] 3d5 4s2 para [Ar] 3d7 dia None of these I chose [Ar] 3d5 4s2 diamagnetic 2) Choose the corect statement
asked by Hannah 
Physics
A 72.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe", a track that is onequarter of a circle with a radius of 4.65 m. What speed (in m/s) does he need at the bottom assuming that the local acceleration due to gravity is 9.80
asked by dan 
Physics
A 2 kg steel ball strikes a wall with a speed of 8.15 m/s at an angle of 54.4◦ with the normal to the wall. It bounces off with the same speed and angle, as shown in the figure. If the ball is in contact with the wall for 0.243 s, what is the magnitude
asked by Seth 
Physics helppp
A 67.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe", a track that is onequarter of a circle with a radius of 2.55 m. What speed (in m/s) does he need at the bottom assuming that the local acceleration due to gravity is 9.80
asked by Me 
chemistry
Assume that you have 2.10 of the deadly gas hydrogen cyanide, . What is the volume of the gas at STP?
asked by Jennifer 
chemistry
If some of the CaCO3 in the sample had already formed some Ca(HCO3)2, will the volume of CO2(g) generated in the reaction be greater,less than or the same as in the experiment? Explain
asked by Gloria 
ALGEBRA
can you help with these: for each inequality tell whether the number after symbol ; is a solution. x 3 ; 3 i said yes k ¡Ý 5 ; 0 i said no 3z ¡Ü 12 ; 4 i said yes n  5 >3 ; 6 i said no 2g + 8 ¡Ý 3 ; 1 i said yes also i need to write real word
asked by MARKO 
Calculus
Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 2m/s, how fast is the area of the spill increasing when the radius is 15m?
asked by Web7 
physics
m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with
asked by joe 
communication
When you acively make judgments about whether or not the message you are hearing is worthwile, you are a assessing the accuracy of the speakers conclusions b engaging in unethical listening behavior c engaging in a barrier to effective listening d engaging
asked by sharib 
biology
if offspring exhibit a 3:1 phenotype ratio, what are the genotypes of the parents?
asked by Adrian 
OChem
A sample of limonene has a specific rotation of +81.5. (Given that R(+)limonene = +125.5 and, S()limonene = 122.1). What is the %ee? ______%ee What is the molecular composition of this same sample? S isomer = ______% R isomer = ______% This is how I
asked by Susie 
algebra
Suppose you measured the diameter of a tree trunk to be 5 cm. The actual diameter can vary by at most 0.4 cm, due to the error in measuring a nonflat surface. Write an absolute value inequality for the range of acceptable diameters and solve the
asked by shan 
Physics
A worker pushes 25Kg crate a distance of 5m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic frication between the crate and the floor is 0.23. (a) What magnitude of force must the worker apply? (b) How
asked by Abdul Waheed 
Physics
A 0.250 kg block on a vertical spring with a spring constant of 4.09 × 103 N/m is pushed downward, compressing the spring 0.0900 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s2 . How
asked by Abby Miller 
grammar
change the boring verbs and ordinary adjectives paul was sad when the football burst
asked by nouran 
Math
Help, I can't find the pattern rule for this sequence(eg. 6,3,2,9,18 and the pattern rule is n squared7) The pattern: 6,28,64,114,178. What's the pattern rule? The pattern: 96,84,64,36. What's the pattern rule? The pattern: 0,24,216,960. What's the
asked by Abigail 
organic chemistry
Determine the structure of the compound C7H14O based on its 13C NMR spectrum.
asked by jennel 
PHYSICS
An astronaut of mass 78.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.500 m/s. With the
asked by EDDY 
CHEMISTRY
how many elements in (NH4)2SO4
asked by chloe 
physicss help!
m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with
asked by joe 
Gov USA
19. Which of the following is true about the trade imbalance in the United States? a. The United States has not had a trade surplus since 1975. b. The United States has run deficits of more than $500 billion in recent years. c. The United States has the
asked by EricaSalazar 
MATH
MIKE HAS 2 MATS THAT ARE IN THE SHAPE OF TRIANGLES THE SCALE FACTOR OF THE 2 TRIANGULAR MATS IS 7/9 WHAT IS THE RATIO OF THE PERIMETERS?
asked by TODD 
Physics Lab
(a) For the rotating mass in the lab setup by what ratio will the velocity change if the period is quadrupled? (b) For the rotating mass in the lab setup by what ratio will the velocity change if the period is decreased by a factor of four? (d) For the
asked by Sarah 
physical science
a charge of + 2x107c is 10cm from a charge of 6x106c find magnitude and direction of force on each charge
asked by Carol 
chemistry
The greatest pressure of the following is that exerted by: (a) a column of Hg 75.0 cm high (d=13.6 g/cm^3) (b) 10.0 g H2 gas at STP (c) a column of air 10 miles high; or (d) a column of CCl4 60.0 cm high (d=1.59 g/cm^3) The answer is b. I know that
asked by Holly 
Government US
Which of the following is the measure of success in an unconventional war? a. winning the support of the people b. territory gained c. enemy soldiers killed d. combat units destroyed e. regime change I WOULD SAY E?
asked by HM 
Chemistry
Calculate the molecular mass of sulphur if 35.5 g of sulphure dissolves in 1 00 g of CS2 to produce a solution that has a boiling point of 49.48 c.
asked by Ethio 
chemistry
In 1774 Joseph Priestly conducted one of his most famous experiments which lead to a method for the preparation of oxygen. The experiment involved heating a sample of mercury II oxide with a large lens. The equation for this reaction is shown below:
asked by lissa 
event driven programming
8. Write a visual basic program that accepts basic pay, allowances and tax of ten employees computes gross pay and net pay of each of the employee.
asked by peter 
Statistics
In each of the following situations, state whether or not the given assignment of probabilities to individual outcomes is legitimate, that is, satisfies the rules of probability. If not, give specific reasons for your answer. a.) when a coin is spun,
asked by Mandy 
math
I need help in solving twostep inequalities. 7  4w
asked by jared 
physics
You push a 4.6 kg block against a horizontal spring, compressing the spring by 27 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 63 cm from where you released it. The spring constant is 250 N/m. What is the
asked by Keelia 
CALCULUS HELP ASAP!:(
Find a cubic function, in the form below, that has a local maximum value of 3 at 4 and a local minimum value of 0 at 3.
asked by Marguerita 
Computer Applications
How is Microsoft Word, Excel, and PowerPoint used in Criminal Justice?
asked by Mary 
Chemistry
the de broglie wavelength of an electron with a velocity of 6.00 x 10^6 m/s is ____m. the mass of the electron is 9.11 x 10^28g.
asked by Hector 
Calculus
a) A boat is pulled into a dock by a rope attached to the bow ("front") of the boat and passing through a pulley on the dock that is 1m higher than the bow of the boat. If the rope is pulled in at a rate of 1m/s, how fast is the boat approaching the dock
asked by Web7 
Chemistry
Use standard enthalpies of formation to calculate the heat produced by the combustion of one mole of ethanol by the following equation: C2H5OH (l) + 3 O2 (g) > 2 CO2 (g) + 3 H2O (g).
asked by Anonymous 
physics
A forse of 75 N due north and 105 N due east is acting on a point. What is the magnitude and direction of the resultant force? What is the magnitde and direction of the equilibrant?
asked by Sarah 
Organic Chem
Bromine will react with limonene according to this reaction (there's a picture, but I can't get that on here. So I'll do my best to write it out). 136.23 g/mol + Br2 > 296.04 g/mol Suppose 627 mg of limonene was reacted with 3.7 mL of a 7.7% (v/v)
asked by Marvin 
Chemistry
Assuming that the smallest measurable wavelength in an experiment is 0.410 fm (femtometers), what is the maximum mass of an object traveling at 815 m*s^1 for which the de Broglie wavelength is observable?
asked by Casey 
physics
A uniform disk with a mass of 27.3 kg and a radius of 0.309 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as the drawing indicates. (a) What is the net torque produced by the two forces? (b) What is the
asked by Sami 
PROBABILITY MATH
a spinner has regions numbered through 121 what is the probability that the spinner will stop on an even number or a multiple of 3.. I am confused. I keep coming up with 17/21 but the real answer is 2/3 how how how ?
asked by HM 
Anime
How would you differentiate anime from American animated series/films? Is it in the storyline, art, etc.? Do they influence one another? Also, how has anime evolved over time, and what exactly is its purpose?
asked by Anon 
statistics
The average teenager spends 7.5 hours per week playing computer and video games. In a random sample of 110 teenagers, what is the probability that their mean time for playing games is more than 8 hours per week?
asked by ron 
Culture Diversity
I have a paper due soon where I need to interview three Japanese Americans. Could any Japanese American answer the following questions for me? I would greatly appreciate it! If you don't feel comfortable answering some of them just leave them blank,
asked by Megan 
Physics...help please
A 65.0 kg student is standing atop a spring in an elevator as it accelerates upward at 3.85 m/s2. The spring constant is 3000 N/m. By how much (in m) is the spring compressed, assuming that the local acceleration due to gravity is 9.80 m/s2?
asked by .... 
PHYSICS: Conservative Forces and Potential Energy
A mass m = 18 kg is pulled along a horizontal floor with NO friction for a distance d =6.6 m. Then the mass is pulled up an incline that makes an angle θ = 38° with the horizontal and has a coefficient of kinetic friction μk = 0.44. The entire time the
asked by Mary 
Quick question about the website
I became a member, but how come I can't post links in an answer? Gives me an error message. Thanks Allyson
asked by Allyson 
Statistics
Upon examining its records, a hospital computes the distribution of the number of days a patient stays at the hospital. They find that 50% of patients stayed just one day before leaving. 30% stayed two days, and 10% stayed 3 days. a.) A patient is selected
asked by Mandy 
calc
The demand curve for the comics is given by the following equation, where q is the number of copies the publisher can sell per week if it sets the price at $p. q=(388p)**2/50 text( ) \(0
asked by lc 
Algebra II
A plane is headed due west with an air speed of 212 km/h. It it driven from its course by a wind from due north blowing at 23.6 km/h. Find ground speed of the plane and the actual direction of travel.
asked by Arielle 
science
In the lab you need to make 1.00 L of a 0.300 M NaCl solution. You had previously made a 0.950 M NaCl solution that you can dilute to form your new solution. How many mL of the concentrated solution would you use to make the dilute solution?
asked by liz 
Physics
A hallway display of energy is constructed in which several people pull on a rope that lifts a block 1.15 m. The display indicates that 0.95 J of work is done. What is the mass of the block? Walk through would be great
asked by Zdeno 
English
I forgot to include the following examples. Thank you. 1) She risked being run over by a lorry while she was crossing the road. Macbeth is regretful but not repentant (of his sins???). 2) Can repentant be followed by a preposition? Shall I write "he
asked by Henry2 
Science
What is the source of energy in fossil fuels?
asked by Bob 
Business Communication
outline a writing plan for a request refusal: Buffer: Reasons: Bad News: Closing:
asked by Roshundria 
English
Iam writing a comparison essay between katy perry fireworks and the climb by miley cyrus. I need help starting off a good introduction. Thesis statment:An analysis of he literacy devices in katy perry"fireworks" and miley cyrus"the climb" reveals Miley
asked by lalala 
World History
Which of the following did reforms first try to end in the slave industry? A.Slavery in Caribbean agriculture. B.The culture of slavery in north america. C.The trade in slaves itself. D.Liberation and compensation of slaves. * this is a review for my test
asked by schoolfreak 
english
What would be some good questions to ask high school students about bullying? I have to make surveys and hand them out to students in classrooms.
asked by Rebecca 
Math
The secret number has a 7 in the ones place, The tens number is an odd number
asked by Harry 
Chem
A 0.1098 g sample of copper metal is dissolved in 34 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 209.5 mL. (Calculate the molarity of Cu2+.)
asked by ALMA 
Calculus
Answer the following questions for the function f(x) = sin^2(x/3) defined on the interval [ 9.424778, 2.356194]. Rememer that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . b.) A global minimum for this
asked by Anonymous 
physics
Consider a 8·kg rod with a length of 0.6·m and rotating about an axis passing through its center. (a) What is its rotational inertia? (B) Suppose the rod is rotating counterclockwise and speeding up with a rotational acceleration of 7·rad/s2. What is
asked by jen 
Science
Explain changes of state between solids and liquids and between liquids and gases?
asked by Frances 
psychology
dr. gibson has created a new energy drink which he hopes will also make a person smarter when testing his new drink what is the independent variable and what is the dependent variable?
asked by stephanie 
prealgebra
After earning interest the balance of an account is $420. The new balance is 7/6 of the orginial balance. How much interest was earned?
asked by Elly 
Chemistry
10 mL of 60oC water is mixed with 10 mL of 0oC water in a perfect calorimeter. What is the final temperature?
asked by John 
chem
The mass of an electron is 9.11\times 10^{31}~\rm kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31\times 10^{10}~\rm m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00\times10^8 ~\rm
asked by Lindsay 
social studies
how did the natavists make life difficult for immigrants in the 1900's
asked by anonamous 
mathematics integration
Perform a change of variable and integrate the following elliptical integral I = Square root [(1x^2)*(2x)] limits lower,1 and upper +1 could you show working
asked by Rikki 
physics
water at 20°C has viscosity n=1.0*10^3 Ns/m^2. sand grains have density 2400kg/m^3. suppose a 1.1 mm diameter sand grain is dropped into a 51m deep lake whose water is a constant 20°C. If the sand grain reaches terminal speed almost instantly (a quite
asked by anna 
geometry
Arc AB measures 5x + 2. Angle ACB measures 3x + 14. Find the value of x.
asked by Anonymous 
Physics
A baseball was hit at 45m/s at an angle of 45 degrees above the horizontal. How long did it remain in the air? How far did it travel horizontally?
asked by Sarah 
english
what is SCS,SCV?
asked by sam 
Physics
Runner A is initially 7.0 km west of a flagpole and is running with a constant velocity of 6.5 km/h due east. Runner B is initially 8.0 km east of the flagpole and is running with a constant velocity of 7.5 km/h due west. How far are the runners from the
asked by Cassie 
world history
The greatest extension of the frontier of food production in the 1800s ocurred in what areas? A.The open lands of south america, north america, and austrailia. B.Rice paddies of china, japan, and vietnam. C.The subsaharan areas of africa. D.The steppes in
asked by schoolfreak 
History of Immigration, proof read my essay?
Hi, I've just finished looking over my rough draft of my essay on the History of Immigration, and was wondering if someone could proofread it for me. Although I've had a teacher do it and everything, I thought I'd get someone elses help. So I've reached
asked by Allyson 
calculus
a closed box with square base is to have a V= 2000in^3. The material for the top and bottom of the box is to cost $3 per square inch and the material for the sides is the cost $1.50 per square inch. If the cost of the material is to be the least, find the
asked by lauren 
math
What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?
asked by nan 
mathematics
what is the equation for exponetial decay(radioactive decay) and how to use the half life in the equation
asked by anonymous 
Chemistry
How can I calculate the energy required for the ionization of an electron from the ground state of the hydrogen atom?
asked by Lorry 
Statistics
In a city with no cars of mixed color, 30% of the cars on the road are brown. Forty percent are either brown or green, and 10% are white. a.) What is the probability that a randomly selected car is green? b.) What is the probability that a randomly
asked by Mandy 
Government USAHelp
The U.S. lesson learned from the Vietnam War was that a. public opinion could be ignored by leaders during wartime. b. nuclear weapons had utility in a war of insurgency. c. there were limits on America's ability to get its own way in the world. d. the
asked by HM 
Prealgebra
Jack runs 275 miles per day during soccer season. He has already run 25 miles this morning. He plans to run 2.5 miles each day. What is the fewest number of days he will need to reach his goal?
asked by rosalind 
engineering
I need help with a Fire Science Engineering homework. A fuel has heat of combustion equal to 30 kj/g. How much energy is released when 5 kilograms are oxidized? Assuming the fuel is reacted in 10 minutes, what is the average heat release rate for the fire?
asked by Deborah 
Trig
Solve 2cosxsinx + sinx = 0 using unit circle.
asked by don 
physics180
A satellite is in circular orbit at a height R above earth's surface. a)find orbital period. b)what height is required for a circular orbit with a period double that found in part (a)?
asked by jaymie 
Health
So, what happens when a Bully picks on another bully? What'll happen to the bully that bullied another bully for bullying a young kid?
asked by Kaylin 
Algebra 2
(x^2 + 6x + 9)y^2 Factor. Thanks.
asked by Brandon 
Science
when you ride in a train that passes a train moving in the opposite direction, the other train appears to rush past you at a greater speed than if you were watching from a parked car at a crossing. how does the speed of your train affect your impression of
asked by Andrew 
Chemistry
Calculate the molecular mass of sulphur if 35.5 g of sulphure dissolves in 1 00 g of CS2 to produce a solution that has a boiling point of 49.48 c. Thanks to ur helps.
asked by Ethio 
government
why has the national government's power increased since the constitution was ratified? Explain fully.
asked by Sangita 
Math
Find the future value of a $10,000 investment at 10 % annual interest compounded semiannually for 4 years. (a) $ 14,000 (b) $ 12,000 (c) $ 24,774.55 (d) $ 14,774.55 (e) $ 24,477.55 Can someone please help me find the future value? I am stuck on this
asked by Adam 
Calculus
Answer the following questions for the function f(x) = sin^2(x/3) defined on the interval [ 9.424778, 2.356194]. Rememer that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . I'm really stuck on this one
asked by Anonymous 
s.s
With regards to the mining and agriculture industry, in the nineteenth century, which of the following statements is false? A. specialization became more common. B. Private investment grew. C. Large companies tried to be paternalistic to keep workers from
asked by schoolfreak 
chemistry
ethanol(C2H5OH)and gasoline(assumed to be octane,C8H18) are both used as automobile fuel.if gasoline is selling for $2.20/gal,what would the price of ethanol have to be in order to provide the same amount of heat per dollar?The density and ΔHf of octane
asked by asembi 
Astronomy
How many degrees of longitude does the Sun move in each hour?
asked by James 
trigonometry
R and S are in the same horizontal plane as the base of a cliff, but R is 132.6 meters nearer it than is S. They find the angles of elevation of the top of the cliff to be 32 degrees and 36 minutes and 63 degrees and 13 minutes. how high is the cliff?
asked by danica 
math
5th grade class of 16 students, onehalf of the student arrived at school early, onefourth arrived on time, and oneeighth arrived late. how many students were absent.
asked by david 
Chemistry
Ethanol, C2H5OH, MW = 46.1 g/mole, is a popular alternative to hydrocarbon fuels. Calculate the grams of ethanol that must be burned to provide 4082 kJ of heat.
asked by Anonymous 
Math
Robert gave onehalf of his marbles to Dean. Then he gave twothirds of the remaining ones to Mark. If he ended up with 10, how many did he have when he stsrted?
asked by Dylan 
math
I am confused on this problem. k/5 + 3/20 < 3/10 I am not sure how to solve.
asked by rosalind 
science
was is density if mass = 10g and volume = 2cm squared?
asked by kathy 
s.s
Even greater than their use for human food, fish are a vital source of? A.Lamp oil B.Fertilizer C.Industrial lubricants D.Lotion and creams *Well I thought the answer would be A or C because fish oil is used and mixed with alot of things.What do you think?
asked by schoolfreak 
Pre Calculas
verify the following 1+1/csc^2x1=sec^2x
asked by Raven 
algebra
A pilot heading his polane due north finds the actual direction of travel to be 5.2 NE. The planes's air speed is 315 mi/h, and the wind is from die west. Find the plane's ground speed and the velocity of the wind.
asked by Arielle 
s.s
The San hunters of southern africa weren’t overwelmed during the nineteenth century because they? A.Were protected by a treaty. B.Were moved to reservations where they could be protected. C.Managed to effectively fight off western colonists. D.Live in a
asked by schoolfreak 
Chris
The curve y = x/(1 + x^2) is called a serpentine. Find an equation of the tangent line to this curve at the point (2, 0.40). (Round the slope and yintercept to two decimal places.)
asked by Calculus 
math
mass = 20 g volume = 20 ml density = ? how do you solve?
asked by jayson 
physics
A 250ohm resistor is connected in parallel with a 190ohm resistor. What is their equivalent resistance?
asked by elisabeth 
algebra
the dart from a highpowered dart gun follows a path given by h(t)=4t^2+62t+10 where h is the height in inches t seconds after it is fired. What is the maximum height reached? how many seconds did it take to reach this height?
asked by tommy 
Physics
How do you get the velocity of a particle given a potential energy diagram and its mass?
asked by Me 
Please help with steps: Geometry
Two mountain bikers have been separated and are hoping to find each other. One biker reads on her GPS that she is located at 102.9 degrees west and 44.1 degrees north. She decides to ride towards the mountain peak, which on the map has the coordinates
asked by Erika 
3rd grade math
leo saw 8 times more snails than starfish at the aquarium. he saw 10 more sea horses than starfish. leo saw 70 animals. how many of each did he see?
asked by delaney 
algebra
write an equation of the line parallel to the line given by 3x2y=8 and having the same yintercepts as the line given by 2y+3x=4
asked by Sharday 
'opinions please'
I wrote a post earlier, I was hoping a few more people could write their opinion (side) on it. I really appreciate it!
asked by y912f 
science
you push a 12.5 kg cart with a force of 14 N if the cart starts from rest how far does it move in 3 seconds?
asked by Eve 
research & Evaluation
I have an airplane that has an ignition system that works like this. There are 2 energy producing devices, called magnetos that "fire" the spark plugs, 2 per cylinder. There is a 1 in a 1000 chance that one will fail. What is the chance that Magneto A OR
asked by Sam 
psychology
dr. gibson has created a new energy drink which he hopes will also make a person smarter when testing his new drink what is the independent variable and what is the dependent variable?
asked by stephanie 
psychology
Nisa has grown up in a small village in the foothills. There was no electricity and water had to be hand pumped. They seldom saw people from the "outside." When she entered school the bus had to pick her up at 6:30 am in order for her to arrive at school
asked by tj 
I NEED HELP. PLEASE
I do not understand pointslope and standard form. Please help me.
asked by Jade 
Physics
I posted this question before and i really need help on it... A pitcher throws a baseball to a batter at 95 mph from a distance, d, away. The batter swings and hits the ball. (5280 ft = 1 mi, g = 32.174 ft/s/s). a) Assuming the pitch travels the full
asked by Skyler 
Algebra II
The resultant of two forces of 1120 N and 2210 N is 2870 N. What angle does the resultant make with each of the two forces?
asked by Arielle 
Social Studies
what an indigenous group who left their cities around 800 A.D.
asked by Davidson 
psychology
. Based on the theory of multiple intelligences by Gardner most people exhibit: (Points: 5) intelligences which function in isolation. a single intelligence. one dominate intelligence. all eight intelligences in different degrees.
asked by Anonymous 
psychology
The use of the lateral prefrontal cortex during intelligence testing indicates that: (Points: 5) a global "workspace" exists in the brain. there is little neuroflexibility. the prefrontal cortex is the central receiving area for all incoming stimuli. there
asked by Anonymous 
English
What books would connect to chapter 7 of the Great Gatsby? I can't seem to connect any books to that chapter. Any ideas?
asked by Anonymous 
Algebra II
The heading of a plane is 27.7 degrees NE, and its air speed is 255 mi.h. If the wind is blowing from the south with a velocity of 42.0 mi/h, find the actual direction of travel of the plane, and its ground speed.
asked by Arielle 
university mathematics
Integration Applications: find the area enclosed by the following curves: Y= lnx and y= 2x+3 and the ordinate x=3
asked by Avi 
Algebra II
A plane flies with a heading of 48 degrees NW and an air speed of 584 km/h. It is driven from its course by a wind of 58.0 km/h from 12.0 degrees SE. Find the ground speed and the drift angle of the plane.
asked by Arielle 
Math C30
Solving Equations Containing Circular Functions ... Solve 2cos^2=1
asked by don 
Maths
A finance company borrows money on which it pays interest at the rate of 14% pa. If it pays interest half yearly, find the return per half year on an investment of $1700 Please show working out thanks
asked by 10M1 
Help with math
I am stuck on a probability question. Please help and tell me the easiest way to find the answer to this.. I am confused and keep getting 5/6 A fair die is rolled..what is the probability of rolling an odd number or a number less than 3? the actual answer
asked by HM 
Industrial Revolution Beneficial?
Why was the Industrial Revolution beneficial? And what would be a counterargument? I need to write a persuasive essay!
asked by Skylar 
Language Arts
What types of Figurative language is this? 1Emily was and oxygendependent mammal, a hairless ape.
asked by Anonymous 
chemistry ASAP
can anybody please explain nomenclature to me ? how to name? for example: Na3PO3 NH4CLO2 AuNO2
asked by maya 
Calculus
A 20' ladder leans against a building. The bottom of the ladder is sliding away horizontally at a rate of 2 feet per second. How fast is the top of the ladder sliding down the building when it is 12' above the ground?
asked by Amy 
world history
The main goal in the Habsburg Empire in World War 1 was?
asked by schoolfreak 
AP European History
Im supposed to do this outine on the Glorious Revolution and for the 2 part it says list and explan 3 The public policy changes that took place does that mean like William and MArys Bill of rights, and the toleration act as well as the Act of settlement im
asked by Chelsea 
world history
The economic success of the Mughals in India was dependent upon
asked by tasha 
AP Government
Who assigns bills the the committees? Why is this an important power to have and how can this person use this influence?
asked by Angela 
English
Is this sentence still correct though if I use "had to" instead of "must"? 1) Macbeth admits that if he had to acknowledge his deed, then it would be best for him to lose all knowledge of himself. Thank you. English  SraJMcGin, Tuesday, November
asked by Henry2 
Science
Examine the obvious environmental impacts as well as significant social and physical ramifications of urban sprawl. What is the relationship between landscape and psychological well being? After defining this relationship, discuss how the presence or
asked by Lisa 
English
I am writing a comparison essay between katy's perry "Fireworks" and "The Climb" by Miley Cyrus. Can somebody help me start with 2 sentences for a strong introduction
asked by lalala 
Math Challenge check
I can appreciate your honesty. However, I thought this was a blog to help people not to insult them. What may seem obvious to one person may not be to the next. Especially so for young students who come here for help with homework problems.
asked by To: Steve /Please Help 
physics
The velocity of a 1.5 kg block sliding down a frictionless inclined plane is found to be 1.13 m/s. 1.2 s later, it has a velocity of 4.37 m/s. What is the angle of the plane with respect to the horizontal (in degrees)?
asked by Anonymous 
reading
I am helping my sister with her hw. They are to write the meaning of a group of words or in that case idioms. What does BET DOLLARS TO DOUGHNUTS, and GETAROUN TO CALLING mean? Please help!!!! Thank you!!! :)
asked by saranghae12 
Pre Calculas
how would you varify the following sinx+sinx cot^2x=cscx
asked by Raven 
psychology
Nisa has grown up in a small village in the foothills. There was no electricity and water had to be hand pumped. They seldom saw people from the "outside." When she entered school the bus had to pick her up at 6:30 am in order for her to arrive at school
asked by tj 
math
if 5 friends want to share 18 ounces of chocolate equally by weight how many ounces should each friend get?write an equation show your work?
asked by chelse combs 
s.s
By 1900, _______ made up 25 percent of Japan's total industrial output. A. Raw silk B. Steel C. Cotton yarn D. Tea I chose Cotton Yarn because in 1900 yarn started being reconized more. I believe tea would have been alot more than just 25%.
asked by schoolfreak 
math
Consider a 8·kg rod with a length of 0.6·m and rotating about an axis passing through its center. (a) What is its rotational inertia?
asked by jen 
Physics
the coefficient of friction between a 78 kg box and a warehouse floor is .21. what is the friction force?
asked by Bailee 
mathematical induction
solve this using the mathematical induction : 1/1(3)+1/3(5)+1/5(7)+......+1/(2n1)(2n+1)=n/(2n+1)
asked by aya 
statistics
The external validity of the results from a research study refers to the?
asked by Anonymous 
Basic Technology
The processes on how to construct a rhombus with a complete diagram on a constructed rhombus.
asked by Inikori 
Science
Why is water only compound occuring naturally on earth in three states?
asked by Frances 
algEBRA
Could you recommend practice sites for inequalities using less than and greater than and word problems
asked by MARKO 
Math
barry puts TVs on a 15foot shelf in his electronics store. He allows 2 1/2 feet of space for each TV. He will be able to put 5.5 TVs on the shelf. Is this reasonable or not
asked by kev 
science
how to calculate percent error
asked by anonymous 
Social StudiesAmrican History
here is a list of individual people who helprd Aamerica gain independence from Britian... Can you add to it??? Please an Thank you. Martha Washington John Adams Charles Cornwallis Thomas Jefferson Frederick William, baron von Steuben John Jay George III
asked by Finally 14. 
Statistics
The basketball player Steve Nash is the alltime career free throw shooter among active players. He makes about 90% of his free throws. In today's game, Nash misses his first two free throws. The TV commentator says, "Nash's technique looks out of rhythm
asked by Mandy 
physics
A 350ohm resistor is connected in series with a 270ohm resistor. What is their equivalent resistance in ohms?
asked by elisabeth 
Caculus
y = 500/1+75e^.625 x = egg mass y = number of tree (thousand) The function is show the forest defoliation1. Find the percent of forest defoliation if the egg mass are 100? (Using derivative) Thank you
asked by alex 
research & Evaluation I
I have a car that has gone 50,000 miles, on average without a breakdown. What is the chance, in the next 5000 miles I have a breakdown?
asked by Sam 
English
Subject: Get Ready! We are hoping to be back at work soon, with everything running smoothly, same production schedule and no late projects or missed deadlines. So you need to clean out your desk, put your stuff in boxes, and clean off the walls. You can
asked by Colby 
Algebra II
Forces of 675 lb and 828 ob act on a body. The smaller force acts due north; the larger force acts N 52.3 degrees E. Find the direction and the magnitude of the resultant.
asked by Arielle 
calculus
For what values of theta, on the polar curve r=theta, 0
asked by Anonymous 
MATH
Using the Law of Cosines for vectors, give a vector proof that if quadrilateral ABCD is a rhombus, diagonal AC bisects
asked by Pam 
science
How does soil most impact living things? A. different soils cause temperature extremes. B. different soils support different types of plants. C. different soils absorb different amounts of sunlight. D. different soils are different colors. My answer is B
asked by lidia 
math
How would you use the substitution method to answer 1/3x2=1 x6y=3, and what would be the solution?
asked by Penny 
math
I need help with a problem. One third of a number, decreaesd by thirtysix, is at most twentytwo. Find the number.
asked by Johnnie 
Spanish SraJMcGin please recheck
I'm not sure what you meant by correcting this sentenceThank you for any further explanation you can give 3. Tocar el piano es______tocar la guitarra. (+bueno) Tocar el piano es mejor que tocar la guitarra. You said in an earlier post: mejor
asked by Allie 
U.S History
Describe how the french navy helped George Washington at Yorktown. Thank's
asked by Andrew 
Opinions wanted
My book flew across the room as another huge wave crashed against the ship. This was the worst vacation of my my life. My fairy warned me this wasn't the time for a trip around the world, but did I listen? NOOOO, I was convinced that there was no wrong
asked by Finally 14. 
physics
A rope is used to pull a 2.54 kg block at constant speed 4.48 m along a horizontal floor. The force on the block from the rope is 5.87 N and directed 29.8° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal
asked by Keelia 
Math
One canned juice drink contains 30% orange juice; another is 10% orange juice. How many liters of each should be mixed together in order to get 20L that is 28% orange juice? I want step by step help.
asked by GATOR 
geometry
A picture frame is shaped as a heptagon. The measure of one angle is 126°. The remaining interior angles are congruent. What is the measure of each remaining interior angle in the picture frame?
asked by vvfdhdh 
math
What is tan(arccos3/4)
asked by ryan 
Chemistry
15 mL of 60oC water is mixed with 10 mL of 0oC water in a perfect calorimeter. What is the final temperature?
asked by Paul 
Grade 11 Functions
A baseball player hits a foul ball into the stands. He wants to know where the ball would've landed if the stands had not been there. The points they give you are: The yintercept (0,1), (2,2.5) and (134,18). I'm pretty sure you are looking for the zeroes.
asked by Jim 
english
Some people say that victims of bullying eventually become the bullies. Why do you think this happens?
asked by Rebecca 
business writing
I have to write a business letter, a memo and an email on one document regarding human resources administrative assistant organizing seminar on sexual harrassment.
asked by brenda 
math
come si fanno le frazioni di un numero
asked by stefan 
Math C30
Last Question disregard .. ooops Solving Equations Containing Circular Functions .. Solve 2cos^2x=1
asked by don 
AlgebraGraphing
I need to find the vertex, axis of symmetry, and if the graph will open upward or downword f(x)=3x^25
asked by MiNdy 
Algebra 2
x^4n  y^6n+2. Factor. Thanks.
asked by Brandon 
Science
Plural Noun That Change Spelling .Write the plural noun for each singular noun. Wolf man tooth
asked by mary 
Computer science
THIS IS C PROGRAMMING I NEED TO CREATE A METHOD! Create a method areaOfaTrapeziod when given a, b, and h (all doubles), will return the area (double) of a trapezoid. Use the equation pictured below. THANKS IN ADVANCE :)
asked by Nan 
English
I have to write a Haiku with has to do with Science, please let me know if this is good. Science is great fun you get to use chemicals, but safety is first. Thank you.
asked by Kyle 
Algebra
Write the slopeintercept equation for the line that passes through (3,15)and is perpendicular to 6x+8y=3
asked by Jackie 
social studies
how to find the mummification process.
asked by tristan 
s.s
Which of the following was the only african state that increased in size and power in the 1800's? A. South Africa B. Zimbabwe C. Ethiopia D. Sumatra * I chose B Zimbabwe do you agree or disagree if this is wrong in your mind what would you have chosen and
asked by schoolfreak 
Algebra
Solve the equation 5x+7=137x graphically. then check your solution algebraically.
asked by Adri 
world history
Ignatius Loyola was a
asked by tasha 
English
I forgot to add two doubts. Thank you very much. 1) Macbeth regrets having killed Duncan but doesn't repent of his sin. As a matter of fact, the word Amen stuck in his throat. 2)Do you say "clean his hands of the burden of the guilt which weighs on his
asked by Henry2 
psychology
I need help to Compare and contrast Humanistic and Existential therapies.
asked by Sharon 
math
using these digits 1,9,3,6 Whatis the least 2digit you can make? What is the greatest 2digit you can make?
asked by lori 
global healh and nursing
how and why do nurses use the epidemiology methods and data?
asked by maria 
math
Howard leaves the dock and sails 2.5miles west He turns south and sails 3.5 Then he turns east and sails 2.5 miles In what direction should howard turn if he wants to use the most direct route to return to the dock ? If Howard use this route ,how many
asked by Angie 
math
What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?
asked by nan 
algebra ineqUALITIES
can you check these tell if the number after the: color is a solution x < 7; 7 i say yes p > 3;3 i say yes k is greater than or equal to 5; 0 i say no 3z is less than or equal to 12;4 i say yes n  5 > 3; 6 i say no 2g + 8 is geater than or equal to 3;1
asked by marko 
world history
By 1890, united states factories produced _______ as those of Britians? A.Twice as much. B.Half as much. C.One quarter as much. D.Three quarters as much. * The answer I chose was D threequarters as much would you agree or disagree and what would you
asked by schoolfreak 
algibra 2
2x+3y=14 x+2y=7
asked by odaine 
statistics
A population of scores is normally distributed with a μ = 40, and a σ = 13. What is the probability of randomly selecting a score greater than 54
asked by Anonymous 
calc
The likelihood that a child will attend a live musical performance can be modeled by the following equation. q=0.01(0.0007 x**2+0.4 x +33) text( ) \(15
asked by lc 
Geography
What would some consequences be if latin america legalized marijuana for recreational use?
asked by Kayla 
Government US
28. One reason why the Soviet Union eventually collapsed was its a. heavy defense expenditures. b. isolation from western technology and markets. c. inefficient centralized command economy. d. perestroika initiative. e. All these answers are correct. I
asked by EricaSalazar 
English
Shall I use the present simple when describing the various parts of the Mariner's tale? Thank you for your corrections. 1) The ancient mariner narrates of how he and his fellow mariners reach(ed) the equator ad the Polar regions after a violent storm.
asked by Henry2 
Astronomy
Explain how you could determine, given the following 3 pieces of information, (you need all 3 together not each one individually) the radius of the Earth. 1) Jakarta and Port Moresby, the capital of Paua New Guinea, are two cities on the equator. 2) A
asked by James 
mathematics
calculate the following integral: Perform a change of variable and integrate the following elliptical integral I = Square root [(1x^2)*(2x)] limits between 1 to 1 please showing any working
asked by ryan 
History
I know that I posted this quetsion earlier How did the Spanish change the way that the PreColombian people lived?we don't have a book. Is there any way you can help me start off someway so I know what to search or get a general idea. Thank you.
asked by Samantha 
Government US
38. Regarding Soviet foreign policy, President Harry Truman believed that the Soviet Union was a. an implacable foe that required direct opposition. b. a regional threat. c. not a threat to its neighbors, Europe, or the United States. d. likely to evolve
asked by EricaSalazar 
Math/DataSets
I am looking for a good problem about data sets. Something along the lines of having to crtically look at a large chart of numbers and glean the appropriate ones. Make sense?
asked by Jeff 
statistics
A machine produces 49 titanium bolts every 2 hours. At this rate how many bolts does the machine produce in 36 minutes?
asked by April 
Industrial Revolution
Can I have a 810 sentence summary on the basics of the industrial revolution?
asked by Skye 
atomic energy
what are the uses of atomic energy?
asked by vamsi 
HELP MATH
I am stuck on a probability question. Please help and tell me the easiest way to find the answer to this.. I am confused and keep getting 5/6 A fair die is rolled..what is the probability of rolling an odd number or a number less than 3? the actual answer
asked by HM 
Algebra II
A certain escalator travels at a rate of 10.6 m/min, and its angle of inclination is 32.5 degrees. What is the vertical component of the velocity? How long will it take a passenger to travel 10.0 m vertically?
asked by Arielle 
English
Had to write a haiku related to science, is this ok? Chemicals make boom Chemicals should not be ate It makes good science Thank you!
asked by Beau 
English
Could you please check the following sentences? 1) Why not meet at six o'clock? 2) Why don't we meet at six o'clock? In what way is sentence 1 different from 2? Is the speaker not included in sentence 2? 3) She tells her husband he must pretend to be
asked by Henry2 
From Theory To Practice
2. According to Leeds, at snack time, children should be given _______ of each food for each year of their lives. A. two tablespoons C. onequarter cup B. one tablespoon D. one cup
asked by amor 
Algebra II
A projectile is launched at an angle of 55.6 degrees to the horizontal and follows a straight path with a speed of 7550 m/min. Find the vertical and horizontale components of this velocity.
asked by Arielle 
physics
The record for a marathon is 1 h, 21 min, 21 s. The marathon distance is 25.84 km. Determine the average speed in m/s of a runner achieving this record.
asked by joy 
math
write a matrix for xy=8,2x5y6z=27, 9x+10yz=54
asked by megan 
reading
I am helping my sister with her hw. She is doing special meanings on a group of words on each of the problems what does DIDN'T GET AROUND TO CALLING mean? Please help!!! Thank you!!!
asked by saranghae12 
Physics
To win the game, a place kicker must kick a football from a point 20 m (21.872 yd) from the goal, amd the ball must clear the crossbar, which is 3.05 m high, When kicked, the ball leaves the ground with a speed of 16 m/s at an angle of 58.1 degrees from
asked by Tina 
statistics
a firm has 10 sales reps. In how many ways can they be assigned to two territories, with 7 reps in one territory and 3 in the other?
asked by sue 
physics
. Hydrogen generated from the reaction between magnesium and nitric acid was collected. At a temperature of 30°C and pressure of 1.2 x 105 Nm2, 340cm3 of gas was collected. What would the volume of this gas be at s.t.p.?
asked by blaire 
Spanish
Please check these Fill in comarative form for the first three: 1.Surfear es ____ interesante (cazar.) Surfear es más divertido que cazar. 2.El fútbol es ____ el golf.(interesante) El fútbol es más interesante que el golf. 3. Tocar el piano
asked by Allie 
math
Explain why 0.7=0.70.
asked by Christian 
CHemistry
Methods of measuring the rate of change? 1.  change in pH? can you explain me plz :)
asked by hmmm 
calculus
A bridge worker on the top deck of a double decked bridge needs to lift a 30 kg tool box, with a cable of uniform density 2 kg/meter, from the ground 15 meters below him to the lower deck of the bridge which is 10 meters above the ground. How much work is
asked by Steve 
math
Explain why 2tenths is larger than 2 hundreths.
asked by Christian 
math
Consider a 8·kg rod with a length of 0.6·m and rotating about an axis passing through its center. (a) What is its rotational inertia?
asked by jen 
English
Could you please check these sentences? Thank you. 1) Have you thought about (of?) selling your secondholiday home? Have you considered selling your house? 2) She mentioned selling her house and moving into a smaller one. She doesn't feel like having an
asked by Henry2 
bio
what is a mechanism for how EB1 can mediate the extension of ER cisternae along microtubules?
asked by Allie 
MATH HELP HELP HELP HELP HELP
Suppose that a set S is bounded above. Let r be any real number and t be any positive real number. Let T = {r + tx : x e S}. Show that sup T = r + t sup S
asked by MATH HELP HELPPP 
bio
how does the explosive polymerization of Gactin propels L. monocytogenes through the cytoplasm?
asked by Allie 
Translation
I am in a translation class and the sentence contains this phrase can you tell me what it means The city was brutal in its reaction wiping 50 3/4p off the share price what does 50 3/4p stand for
asked by John 
bio
what is the cisternal maturation hypothesis for Golgi apparatus function?
asked by Allie 
Ochem
If you start with 2.97 g of zest and obtain 459 mg of pure limonene, what is your percent recovery? I was thinking of dividing .459g by 2.97g and then multiplying by 100 to get the percent recovery. But then I realized that the zest and limonene aren't the
asked by Lucille 
English
Thank you very much. I'm posting the whole summary to you again because I think there are a few more things to check. 1.In the first part the ancient Mariner stops a wedding guest to tell him his dreadful tale. He tells how he and his fellow mariners
asked by Henry2 
Spanish 8th grade
Could you please check these? 1.¿ Qué te encanta hacer en el invierno? Me encanta el esqui. 2. ¿Cuál es tu pasatiempo favorito y por qué? Mi pasatiempo favorito es practico al fútbol americano . 3. ¿Es el fútbol o el fútbol americano más
asked by Matthew W. 
English
I left out the last two parts. Thank you very much. 1.The fifth part continues the process of soul’s revival. The ship begins to move and celestial spirits stand by the corpses of the dead men. 2. In the sixth part the process of healing seems to be made
asked by Henry2 
History
How did the Spanish change the way that the PreColombian people lived?
asked by Samantha 
Physics
A tire contains air at a pressure of 2 bar at 15 degrees Celsius. If the tires volume is unchanged, what will the air pressure in it be when the tire warms up to 40 degrees Celsius as the car is driven?
asked by Diana 
Business
What is the difference between production and productivity? Give a real world example of both as they apply to you. Make sure that you support your answers with research from the text book or other sources. Provide substantive responses to at least two
asked by jon 
MathPLEASE HELP ME
I do not understand pointslope and standard form. Please help me.
asked by Jade 
math
Explain why 0.7=0.70.
asked by Christian 
algebra
If you have a^ + b^= (a+b)(a+b). Is this always true, never true, or sometimes true? Explain.
asked by christy 
Physics
Hi, here's a problem that I have difficulty with to solve. Block M2, w/c has a 20 kg mass, is on a frictionless table and it is firmly attached to one end of a spring with k = 2.5 N/m. The other end of the spring is anchored to the wall. Another block, M1
asked by Chika 
Algebra
how do you solve this problem? (24b^3+16b^2+24b+39)/(4b+4)
asked by Cathy T 
Science
What is Pot of Gold? What did inferences could scientist make from Pot of Gold on Mars?
asked by Ady 
psychology
Both Albert's mother and father had dropped out of high school. His brother left school in the eighth grade. Based on the performance of his family members Albert does not expect that he will complete high school. He has developed a(n)
asked by Anonymous 
psychology
. One attribute that the StanfordBinet, WAISIII, and WISCIV have in common is that they are all: (Points: 5) timed. written. administered individually. group tests.
asked by tj 
chemistry
can anybody please explain nomenclature to me ? how to name? for example: Na3PO3 NH4CLO2 AuNO2
asked by maya 
AP CHEM (URGENT)!!!!!
How can ionization potential and electron affinity be used to predict whether or not a simple synthesis reaction will occur between a metal and a nonmetal.
asked by Valm 
Chemistry
We have to conduct a lab experiment for a photochemical reaction. We will be using a redand violet film and filter paper labeled 40W and 60W. On each piece of paper we will add 1 drop of NaCl and AgNO3 and then let it sit under a lamp to see what happens.
asked by Hannah 
psychology
The testing company has hired qualified people in the field to administer the new test bank to subjects of different ages and ethnic backgrounds. They need a sizable number of scores from inner city, urban, and country/small town subjects. Their goal is to
asked by tj 
Math
How does knowing 26=30  4 help you find 7+26?
asked by Kevin 
statistics
I have an airplane that has an ignition system that works like this. There are 2 energy producing devices, called magnetos that "fire" the spark plugs, 2 per cylinder. There is a 1 in a 1000 chance that one will fail. What is the chance that Magneto A OR
asked by Sam 
sentences
what sentence can i use using the word "monk''
asked by jennifer white 
calculus
For what values of theta, on the polar curve r=theta, 0
asked by Anonymous 
research & Evaluation
The housing market in my area has seen a 12% trend downward in the average price. Further, the time to closing appears to have taken more time as compared to 3 years ago. Here are the values for the average time to close for the houses in the area. Mean =
asked by Sam 
psychology
How are a cat and a dog alike?" An answer to this question requires: (Points: 5) crystallized intelligence. intrapersonal intelligence. fluid intelligence. Eastern intelligence.
asked by Anonymous 
Algebra 1
Look for a pattern in each table of values to determine which model best describes the data. Then write an equation for tue function that models the data. X: 1, 0, 1, 2, 3 Y: 6, 0, 6, 24, 54
asked by Austin 
psychology
In their book The Bell Curve, Murray and Herrnstein supported their claim of intelligence differences between races as attributable to
asked by tj 
math
the basic unit of mass in the metric system
asked by ST 
Stats
If there are only two possible outcomes to an experiment then... A.) the two corresponding probabilities must each be.50. B.) the two corresponding probabilities could be any numbers between 0 and 1, but must add up to 1. C.) the two corresponding
asked by Mandy 
opinions pleasee
I'm doing a speech on abortion, and I'm on the side that's against it. I wanted to know some reasons why people are prolife. I mean I'm against abortion because I have 2 little siblings and I feel like it's murder. I feel like abortion should be illegal,
asked by y912f 
MATH
Given a binomial distribution with n = 21 and p = 0.76, would the normal distribution provide a reasonable approximation? Why or why not?
asked by Jen 
psychology
"Who was the first vice president of the United States?" The correct answer to this question requires: (Points: 5) crystallized intelligence. intrapersonal intelligence. fluid intelligence. Eastern intelligence.
asked by Anonymous 
psychology
One of the arguments against inherited racial differences in intelligence is based on data that shows: (Points: 5) a college education reduces the gap between the IQ scores of white and black races. nutrition reduces the gap. scores for black test takers
asked by tj 
psychology
The experimental rats were being raised in separate environments. One group lived in the traditional cage in a quiet, but well lighted room. They were supplied with plenty of food and water. The second group inhabited "Rat Disney Land." There were colorful
asked by tj 
History
What language was spoken/written by the venerable bede/ pre Beowulf period?
asked by Chris 
Physics
Hi, here's a problem that I have difficulty with to solve. Block M2, w/c has a 20 kg mass, is on a frictionless table and it is firmly attached to one end of a spring with k = 2.5 N/m. The other end of the spring is anchored to the wall. Another block, M1
asked by Chika 
psychology
Time Remaining: 1. If the concept is truck, the prototype might be: (Points: 5) a Ford pick up. bulldozer. gravel eighteen wheeler. personnel carrier. 2. If the prototype is block or ball, the concept is: (Points: 5) construction. toy. child. play. 3. All
asked by tj 
chemistry 111
How many moles are in 6.35 g of NaOH
asked by Anonymous 
CSS/ Web programming
Test the following CSS code: p.standout{fontsize: 24pt; color:blue;backgroundcolor:red}; To really make it stand out, use a red background What background color do you see when displayed by IE? How about Firebox? Explain why.
asked by Mike 
Psychology
could some please help me to compare and contrast these two thrapeutic approaches=humanistic/existential and Cognitive behavior therapy
asked by Sharon 
math pre cal
Your industry currently employs 3,800,000 workers. If this labor force is growing expotentially at an annual rate of 2.3% how long will it be before the number of employees reaches 5,000,000?
asked by nan 
SOCIAL STUDIES
What library is the largest with over 120 million items?
asked by Jacy 
Trig
Solve 2cos sq x = 1 using the unit circle.
asked by don 
History
Were Habsburgs protestant or catholic? Majority if not all? Were Valois protestant or catholic? Majority if not all?
asked by European History 
algerbra
one adult for every 25 freinds
asked by Anonymous 
Math
A loan of $ 100 at 6% is made for 3 years, compounded annually. What is the total loan value at the end of 3 years? (a)$ 119.10 (b)$ 401.76 (c)$ 448.00 (d) $ 501.76 (e)$ 510.76 I need help with this question not asking for the answer.
asked by Anonymous 
Math
The annual interest rate on an investment is 8%. What is the quarterly rate? (a) 1% (b)12% (c) 16% (d)2% (e)3% Can someone help me figure out the formula for finding out the quarterly rate?
asked by George 
8th grade math
collect like terms 3a+2a^2+aa^2
asked by Hector 
government
How does the supremacy clause make federalism work? Discuss.
asked by Sangita 
reading
what is the idiom of CHAIN UP, THE LINE WAS DEAD, and LIKE HIS INSIDES WERE FALLING OUT? Please help!!!!! Thank you!!!!
asked by kpop rules 
science
Observe one hour in a classroom (preschool, prekindergarten, kindergarten
asked by tt 
social studies
between 1400000 and 500000 years ago early hominids learned how to?
asked by lydia 
English
I have to write a Haiku related to science, not sure what I need to do. Please help.
asked by Beau 
geometry
find the measures of the interior angles.. (triangle) 110x , 3x10, 2x write equation too .
asked by Shelby 
calculus
find the intervals on which the function is increasing, decreasing, or constant. (7,2)(6,2)(5,2)(4,2)(3,2)(2,2)(1,2)(1,3)(3,4)(5,5)
asked by Terry 
statistics
Out of a group of 100 US residents, how many would you expect to have travelled no more than 386.9 miles in any given year?
asked by kwilcox 
probability and statistics
Out of a group of 100 US residents, how many would you expect to have travelled no more than 386.9 miles in any given year?
asked by kwilcox 
adult education
: Sharing learning through narrative communication
asked by Fran Henry 
math
what are triangular number's
asked by louise 
Math
What does it mean to maesure and compaer inches to the foot?
asked by Towanda 
English
I just wanted you to clarify a few doubts. You have already checked the first sentence. I just wanted to know if the use of the present is correct. 1) He imagines that even all the water from Neptune's ocean could not wash away the burden of guilt that
asked by Henry2 
6th drade math
There are 7oz of suger in a suger 16oz box of honey.What percent of honey is suger? Round to the nearest percent.
asked by rob 
English
I urgently need you to check these sentences. I included my doubts in parentheses. Thank you. 1) The bride, as red as a rose, has entered into (?) the hall (OR the hall /without into) 2) The ice split as (?) the sound of thunder and the helmsman steered
asked by Henry2 
Enriched College Writing
I am reading an essay from Robert Bellah called, "Community, Commitment, and Individuality" and he mentions the phrase "community of memory and hope". What does he mean by this? Explaining it in simpler words would be very helpful! :) Thanks!!!!!!
asked by Scarlet 
psy
How do the major schools of psychology impact our daily lives? What are two of the main points of your Week 1 Foundations of Psychology Paper that you can apply to your life? How will you apply these aspects of psychology in your personal and professional
asked by fvd