Questions Asked on
September 3, 2012

chemistry
ethanol is a common laboratory solvent and has a density of 0.789 g/ml what is the mass in grams of 139 mL of ethanol
asked by baRRY 
math
Eliza Savage received a statement from her bank showing a checking account balance of $324.18 as of January 18. Her own checkbook shows a balance of $487.38 as of January 29. The bank returned all of the cancelled checks but three. The amounts of these
asked by Kirea 
physics
Tammy leaves the oﬃce, drives 43 km due north, then turns onto a second highway and continues in a direction of 30◦ north of east for 80 km. What is her total displacement from the office? and At what angle is her displacement? (Consider east to be
asked by Amanda 
HISTORY
10. Which of the following statements is true regarding the Korean War? A. Stalin approved the North Korean attack in advance. B. Stalin was outraged by the North Korean attack on South Korea. C. Both Stalin and Mao expected the American response to the
asked by JESSICA 
physics
A plane is flying horizontally at a height of 500 m and a constant speed of 429 km/h when an object is projected vertically downward at an initial speed of 35.0 m/s. If air resistance is neglected, the average vertical component of velocity between the
asked by Anonymous 
AP Chemistry
For the reaction 3 FeCl2 + 2 Na3PO4 → Fe3(PO4)2 + 6 NaCl , what is the maximum amount of Fe3(PO4)2 which could be formed from 11.26 g of FeCl2 and 13.34 g of Na3PO4?
asked by Rafael 
AP Language & composition
What two pieces of information are necessary each time you cite a source in the text of your paper?
asked by emma 
physics
Reckless Rick driving along the road at 90 km/hr bumps into Hapless Harry directly in fornt of him who is driving at 88 km/hr. What is the speed of the collision?
asked by Anonymous 
Math
What is the difference between the measured values of 1.05m and 1.050m? What factor of a measurement tool determines the sig figs of a measured value? The two values are different because of their sig figs, the first has 3 and the other has 4. I think that
asked by Hannah 
college
A blue ball is thrown upward with an initial speed of 19.8 m/s, from a height of 0.5 meters above the ground. 2.4 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 7.9 m/s from a height of 22.5 meters above the
asked by ali 
Science
Ten pounds of liquid water is at a temperature of 180 degrees F at standard atmospheric conditions. Determine the energy required to convert this to water vapor (steam) at a temperature of 212 degrees F.
asked by Anil 
ap geometry
m is the midpoint of segment jk. jm=x/8 and jk=3x/4 subtracted by 6. find mk
asked by jonathan 
Chemistry
What is wrong with the names 2ethyl4 and 4dimethylpentane?
asked by Joy 
Economics
3. Suppose a firm has a constant marginal cost of $10. The current price of the product is $25, and at that price, it is estimated that the price elasticity of demand is 3.0. a. Is the charging the optimal price for the product? Demonstrate how you know.
asked by Michelle 
physics
A vehicle moves in a straight line with an acceleration of 5 km/h^2.By how much does the speed change each second?Answer in units of km/h
asked by selena 
physics
can someone explain the answers to the question: Consider the following set of equations, where s, s0 and r have units of length, t has units of time, v has units of velocity, g and a have units of acceleration. Take k to be dimensionless.Identify if these
asked by Anonymous 
physics
A red ball is thrown down with an initial speed of 1.2 m/s from a height of 25.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 22.9 m/s, from a height of 0.8 meters above the
asked by ali 
Physics
A truck tractor pulls two trailers, one behind the other, at a constant speed of 100 km/h. It takes 0.640 s for the big rig to completely pass onto a bridge 390 m long. For what duration of time is all or part of the trucktrailer combination on the
asked by Joli 
physics
tom the cat is chasing jerry the mouse across the table surface at 1.5 m high, jerry steps out of the way and tom slides off the table at 5m/s. Where will tom hit the floof and what are the velocity components just before impact
asked by Parker 
English
1.In MLA documentation, the citation goes ______ the quotation marks, but ______ the period. a)after; before b)before; after c)in between; before ~ d)in between; after 2.When a writer cites materials used from the Web, it is important to cite the ______ as
asked by hardo 
Physics
A car starts from rest and travels for 5.4 s with a uniform acceleration of +1.6 m/s 2 . The driver then applies the brakes, causing a uniform acceleration of 2.2 m/s 2 . The breaks are applied for 1.80 s. (a) How fast is the car going at the end of the
asked by Dakota 
improving vocabulary skills fourth edition
The first is to her with a stream of personal question:
asked by Anonymous 
Physics
Review Conceptual Example 7 as background for this problem. Two charges are fixed in place with a separation d. One charge is positive and has twice (n = 2) the magnitude of the other charge, which is negative. The positive charge lies to the left of the
asked by Brandi 
math
A wire 320 in. long is cut into two pieces. One piece is formed into a square and the other into a circle. If the two figures have the same area, what are the lengths of the two pieces of wire (to the nearest tenth of an inch)?
asked by roger 
Physics
A man is 6 feet tall and wishes to have a "full length mirror" in his house, meaning a mirror that lets him see himself from top to bottom. He goes to the hardware store to get a piece of flat (plane) mirror that is just barely long enough to work. How
asked by Jacob 
AP Chemistry
The reaction of 8.7 grams of ﬂuorine with excess chlorine produced 3.9 grams of ClF3. What percent yield of ClF3 was obtained? Answer in units of %
asked by Rafael 
physics
A car is initially traveling due north at 24.0 m/s. A.) find the velocity of the car after 4.00 seconds if it's acceleration is 1.60 m/s2 due north. B.) find the velocity of the car after 4.00 seconds if it's acceleration is instead 1.95 m/s2 due south.
asked by Anonymous 
math
Two fishing boats depart a harbor at the same time, one traveling east, the other south. The eastbound boat travels at a speed 1 mi/h faster than the southbound boat. After nine hours the boats are x = 45 mi apart. Find the speed of the southbound boat.
asked by roger 
statistics
2. The results of a recent survey indicate that the average new car costs $23,000, with a standard deviation of $3,500. The price of cars is normally distributed. a. What is a Z score for a car with a price of $ 33,000? b. What is a Z score for a car with
asked by Sandra 
math
a man who is 5 feet tall stands 15 feet from a lamppost that is 27 feet high. how far away from the man is the tip of his shadow?
asked by joe 
statistics
4. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use webcalculator to answer the following questions. Instead, you need to use the Z
asked by Sandra 
math
if the measure of angle a is 48 degrees then what is the measure of angle b and angle c?
asked by ashlyn 
Physics
A body is projected at an angle 30 degree to the horizontal with kintic energy E.The kinetic energy at the topmost point is?
asked by Shahrukh 
english
are these correct proper nouns sam  burger king  she  the girl regular noun microphone  table  spoon  milk
asked by daniel's mom 
Microeconomics
When you golf, you receive 18 units of pleasure from the first hole and on each hole thereafter your pleasure drops by one unit, so that the 2nd hole gives you 17 units of pleasure etc. If you play 5 holes and the rain hits so that you quit playing, what
asked by Robson 
chems
A cubic piece of metal measures 7.50cm on each edge. If the metal is nickel, whose density is 8.90 {\rm g/cm}^3, what is the mass of the cube?
asked by jason 
Chemistry
The density of acetone, a common solvent found in nail polish remover, is 0.793g/mL. How much acetone (in g) is in a 450mL bottle? How much acetone (in g) is in a 1.00wuart bottle?
asked by Anonymous 
math
1.A book and a bookmark together sell for $10.10. If the price of the book is $10 more than the price of the bookmark ,find the price of the book and the price of the bookmark.
asked by Marcela Minoza 
math
Suppose that $20000 is invested at 7% interest compounded annually. Find that amount of money in the account after 1 year? need it broken down in algebra
asked by frank 
Computers
The Romance World Cruise Line provides special gifts for passengers who are newlyweds, as well as for those who have been married more than 40 years. Design a pseudocode for a program that accepts a couple's last name, ship cabin number, and number of
asked by Liz 
algebra
it's asking to identify a pattern and find the next number in the pattern. 1.) 31,24,17,10 4 3 2 3 2.) 0,4,2,10,50 450 250 5 50 If someone could help would appreciate but would like an explanation on how you get it so I can learn. Thanks ahead.
asked by kevin 
statistics
3. In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject. Mean SD Math 67 9.58 English 78 12.45 One student’s Math score was 70 and the same
asked by Sandra 
physics
Runner A is initially 6.0 km west of a flagpole and is running with a constant velocity of 4.5 km/h due east. Runner B is initially 8.0 km east of the flagpole and is running with a constant velocity of 6.5 km/h due west How much time does it take for the
asked by Cloud 
Eng091
I am woorking on supporting details or is this topic sentence. I am answering these the way I think they are but will someone please double check for me, I just want to be sure I am understanding this right. Finally, he began throwing a tennis ball for his
asked by Jazmyne 
statistics
The lifetime of a 2 volt nonrechargeable battery has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. What is the z score for batteries with lifetimes of 520 hours
asked by Gee 
Physics
An open box with a square base (see figure) is to be constructed from 160 square inches of material. The height of the box is 3 inches. What are the dimensions of the box? (Hint: The surface area is S = x2 + 4xh.) 1 . in. (length) × 2 . in. (width) × 3 .
asked by Kristi 
Math
A ship leaves port at 6 am travelling due east at 12mph. Another ship leaves port at 11 am travelling due north at 15 mph. How far apart, to the nearest tenth of a mile are the 2 ships at 11 pm?
asked by Anonymous 
math
Wendy took a trip from city A to city B, a distance of 560 mi. She traveled part of the way by bus, which arrived at the train station just in time for Wendy to complete her journey by train. The bus averaged 40 mi/h, and the train averaged 110 mi/h. The
asked by roger 
Physics
A rock thrown straight up with a velocity of 29 m/s from the edge of a building just misses the building as it comes down. The rock is moving at 44 m/s when it strikes the ground. How tall was the building? The acceleration of gravity is 9.8 m/s Answer in
asked by Diane 
Math
Quadrilateral ABCD has vertices at A(6,3), B(3,9), C(6,6) and D(12,3).It is reflected across the y axis. What are the new coordinates. Explain
asked by Theresa 
Science
My question is which of the following are NOT examples of data? Numbers Graphs Measurements Conclusions I know conclusions are not data. What about graphs? Is that data or a way to record data?
asked by Kelley 
physics
a steel beam is 12.0 m long when installed at 23 degrees celsius.Find the change in the beam's length if the temperature changes from 32.0 degrees celcius to 55 degrees celcius?
asked by Anonymous 
vocab
What is a compound sentence for abnegation?
asked by christina 
physics
A certain car is capable of accelerating at a rate of 0.57 m/s^2.How long does it take for this car to go from a speed of 56 mi/h to a speed of 66 mi/h? 1mi/h = 0.447 m/s.Answer in units of s
asked by selena 
Physics
A sailboat starts from rest and accelerates at a rate of 0.12 m/s 2 over a distance of 280 m. (a) Find the magnitude of the boat's final velocity. m/s (b) Find the time it takes the boat to travel this distance.
asked by Dakota 
math
An investment of $2500 is made at an annual interest rate of 5.5% .How much additional money must be invested at an annual simple interest rate of 8% so that the total interest earned is 7% of the total investment?
asked by Marcela Minoza 
Biology
Down syndrome or trisomy 21, in humans is caused by an extra copy of relatively small chromosome 21. if a male with down syndrome could have children what is the likelihood that his children will also have down syndrome? a. 0 b. 25 c.50 d. 75 e. 100
asked by Erin 
Math
Put in order from least to greatest. 12 percent. 1/8. 1.2 1/12
asked by Tyrese 
Chemistry
A piece of metal weighing 20.32 grams is added to a flask with a volume of 24.5 cm3. It is found that 18.52 grams of water must be added to the metal to fill the flask. What is the density of the metal?
asked by Jane 
physics
A crate has a mass of 27 kg. What applied force is required to produce an acceleration of 3 m/s2 if the frictional force is known to be 98 N?
asked by Anonymous 
physics
A waterskier is being pulled at a steady speed in a straight line. her mass plus the mass of the ski is 65 kg. the pull of the tow rope on her is 520 N. a...i) What is the vertical component Y of the push of the water on the ski?? ....ii) What is the
asked by Mariam 
math
explain how you would write the number. that is 2 tens more than 53.
asked by Aaliyah 
chemistry
a 20*/* phosphoric acid solution has a density of 1.14g/ml.calculate the molality and molarity of the solution.
asked by logeshwari 
physics help please!
A race car is one lap behind the lead race car when the lead car has 57 laps to go in a race. If the speed of the lead car is 66.2 m/s, what must be the average speed of the second car to catch the lead car just before the end of the race (i.e., right at
asked by Amanda 
physics
What is the average velocity v between 0 s and 6 s?
asked by selena 
Physics(Please check)
What is the difference between the measured values of 1.05m and 1.050m? What factor of a measurement tool determines the sig figs of a measured value? The two values are different because of their sig figs, the first has 3 and the other has 4. I think that
asked by Hannah 
physics
A body moving with uniform acceleration has a velocity of 10.2 cm/s when its x coordinate is 3.73 cm.If its x coordinate 2.33 s later is −2.74 cm,what is the xcomponent of its acceleration?Answer in units of cm/s^2
asked by selena 
Chemistry
Given 1.7 g of hydrobromic acid (48%) calculate the number of mL. (MW HBr: 80.91 g/mol, density: 1.49 g/mL)
asked by M 
Financial accounting 2
If a building cost $600,000, has an estimated residual value of $240,000, has an estimated life of 36 years, and is depreciated by the straightline method: a) What is the annual depreciation? b) what is the book value at the end of the 20th year?
asked by MAry 
Chemistry
How do you figure out how mch oxygen gas escaped when Potassium Chlorate is decomposed in a reation? Also what mass of Potassium Chlorate was decomposed in the experiment? I conducted the experiement but don't know how to do this.
asked by Becca 
chemistry
What is the pH of an aqueous solution of a weakly acidic drug that is 40% dissociated and has a pKa =4.7?
asked by derrick 
Physic Help
In heavy rushhour traffic in Atlanta, you drive in a straight line at 21 mph for 5 miles. Then you have to stop for 10 minutes and finally drive slowly by a car wreck that is 2 miles away at a steady 15 mph. After the wreck, the road is clear, and you can
asked by Megan Lee 
physics
The initial speed of a body is 2.14 m/s. What is its speed after 1.87 s if it accelerates uniformly at 4.31 m/s^2? Answer in units of m/s
asked by selena 
math
a mother wants to $9000 for her son's future education. She invested a portion of the money in a bank certificate(CD account) which earns 4% and the reminder in a savings bond that earns 7%. If the total interest earned after one year is $540, how much
asked by KaRon 
physics
A small rock is thrown vertically upward with a speed of 13.0from the edge of the roof of a 37.0 tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be neglected. A) What is the speed of
asked by joe 
math
explain how you would write the number that is 2 tens more than 53
asked by marie 
Health economics
Suppose you are to specify a shortrun total variable cost function for a nursing home. Explain the variables you would include in the function. What is the expected relation between a change in each of these variables and shortrun total variable costs?
asked by Mike 
math
A passenger train travelled at an average speed of 72 km/h. A man on the passenger train observed a goods train, which was travelling at a speed of 54 km/h, in the oncoming direction. If the goods train passed him in 10 seconds, find the length of the
asked by Im 
math
A rancher with 7000 yds of fencing wants to enclose a rectangular field that borders a straight highway and then wants to devide it into two plots with a fence parellel to the highway. If no fence is needed along the highway, what is the largest area that
asked by nick 
Math
A particle A of mass 2.11 kg collides with another particle B of mass 3.86 kg. Their initial velocities are u1 = 2.16i + 0.88j and u2 = 0.7i + 1.12j just before impact. After collision, they both merged and becomes a composite particle, which travel with a
asked by Darren 
physics
A motor boat heads east across a river at 5.1 m/s. The river flows south at 2.1 m/s. Calculate the resultant speed.
asked by Elizabeth 
math
three pies are cut into sixths .how many pieces will there be
asked by ana 
science
An airtraffic controller observes two aircraft on his radar screen. The first is at altitude 850 m, horizontal distance 20.0 km, and 24.5° south of west. The second aircraft is at altitude 1100 m, horizontal distance 18.0 km, and 16.0° south of west.
asked by mohannad 
college physics
A waterskier is being pulled at a steady speed in a straight line. her mass plus the mass of the ski is 65 kg. the pull of the tow rope on her is 520 N. a...i) What is the vertical component Y of the push of the water on the ski?? ....ii) What is the
asked by Mariam 
algebra
2x^3+7x^218x63
asked by Alexis 
algebra
Briana's second test score was 8 points higher than her first score. Her third score was 88. She had a B average (between 80 and 89 inclusive) for three tests. What can you conclude about her first test score?
asked by jason 
math
.Three people decide to share the cost of a yacht, By bringing in an additional partner they can reduce the cost to each person by $4000 .What is the total cost of the yacht?
asked by Marcela Minoza 
statistics
The most common intelligence quotient (IQ) scale is normally distributed with mean 100 and standard deviation 15. What score would put a child 3 standard deviations above the mean
asked by Gee 
7th grade math
What's the quickest amount of time that all four kids can get across a bridge with on kid always going back to get the other. 1 kid took 5 minutes 1 kid took 10 minutes 1 kid took 20 minutes 1 kid took 25 minutes
asked by joe 
statistics
1. The table below presents data for a sample of people who completed a religious survey. Age Gender Denomination Church Attendance 56 1 7 4 46 2 6 5 49 2 6 5 49 1 1 5 27 2 9 5 51 1 4 2 47 2 2 3 67 1 5 4 49 2 2 6 33 1 12 6 55 2 9 5 40 1 7 5 62 1 8 6 47 2 6
asked by Sandra 
math
a cordof wood stacked as a rectangular solid measures 4"x4"x8". How many cubic feet are in 3/4 this fo a cord?
asked by john 
physics
What is its speed after 1.87 s if it accelerates uniformly at −4.31 m/s^2? Answer in units of m/s
asked by selena 
math
two coins are tossed list all the possible outcomes what is the probability that both of the coins land headsup?
asked by frank 
ENGLISH
The following sentence is in what tense? Laura has given donations to the local food bank. A. Past perfect B. Present perfect C. Present D. Past I THINK ITS A. RIGHT?
asked by JESSICA 
Physics
A crate has a mass of 27 kg. What applied force is required to produce an acceleration of 3 m/s2 if the frictional force is known to be 98 N? I am confused on how to solve this.
asked by Anonymous 
HISTORY
Which of the following is true of President G. W. Bush? A. He accepted the United States' role in the International Criminal Court. B. He reluctantly endorsed the Kyoto Protocol. C. He vowed to punish all countries sponsoring terrorism. D. He rejected
asked by JESSICA 
Physics
Use the position equation given below, where s represents the height of the object (in feet), v0 represents the initial velocity of the object (in feet per second), s0 represents the initial height of the object (in feet), and t represents the time (in
asked by Kristi 
religion
Which of the following is NOT accurate? A. Hindus recognize the authority of the Vedas, whereas Jains do not. B. For Hindus the ultimate goal is to achieve moksha; for Jains the ultimate goal is to try to respect all life forms. C. Hindus believe in a
asked by ronaldo 
physics
What is the average acceleration a between 14 s and 16 s?
asked by selena 
College Math
How do you solve a quadratic equation using the indian method?
asked by Quita 
world studies
1. How did European exploration held lead the way to the Scientific Revolution? I was thinking that with the more discoveries they were making, they wanted explanations as to how things are that way 2. How was the Scientific Revolution related to the
asked by SoccerStar 
calculus
I need help with the following problem: From a point 50 meters from the bottom of a radio tower along level ground, the angle of elevation to the top of the tower is 67 degrees. What is the height of the tower?
asked by Don 
chemistry
How many oxygen atoms are present in 83.3 mg of salicylic acid?
asked by savy 
algebra
to which set of numbers does the number belong 1.) 5/4 irrational integers rational natural 2.)graph the number on a number line 2/5 I don't know how to do these ones if someone could help and explain
asked by kevin 
healthcare
Write a memo to the staff of all 3 of Kyosha Valley’s locations and include the following information: 1.Explain the uniform policy. 2.Explain the expectations of staff with regard to teamwork in keeping the office and bathrooms clean during the day and
asked by Tiffany 
algebra
find the equation for the circle with the center (5, 4) and passing through (2,4)
asked by sfsf 
ENGLISH
In which sentence is race used as a noun? A. Tom will race with four other boys. B. Tom won the race. C. If you race across town, you'll be on time. D. Don't race the motor when you're starting the car ITS C RIGHT?
asked by JESSICA 
ANT101
Yanomami kinship vs American kinship? is there trully any difference, we look out for whats best for ourselves and our family?
asked by apryll 
statistics
For a population with a mean of 250 and a standard deviation of 47, return each of the following z scores to raw scores on this variable. a. 0.54 b. 2.66 c. 1.0 d. 1.79
asked by tammy 
physics
Consider the expression 2π times square root of ℓ/g, where ℓ is length and g is gravitational acceleration in units of length divided by time squared.Evaluate its units.
asked by selena 
physics
A 26 N force and a 42 N force act concurrently at point P. The larger force is directed north and the other acts toward the east. Calculate the resultant force acting on point P.
asked by Elizabeth 
statistics
The most common intelligence quotient (IQ) scale is normally distributed with mean 100 and standard deviation 15. What score would put a child 3 standard deviations above the mean
asked by Gee 
Alegebra 2
write an expression for the sum of your earnings for 3 weeks and your friends earnings for 2 weeks if you each work r hours per week and your friend received $15.00 in tips per week
asked by Cullen 
math
If a cube is sliced into equal sized smaller cubes, which quantity of smaller cubes could be attained? a)4 b)16 c)1/4 d)1/5 e)1
asked by john 
math
Tx unemployment rate is 7.2% If a total of 390,000 people who are able to work using the unemployment rate to determine how many people would be unemployed?
asked by Denyse 
Physics(Please check)
An experiment was done where a tiny steel ball was measured with a micrometer. I know I already posted a question about this before and was given a respond but after trying to fix my answers I am still lost. If someone could please review my results and
asked by Hannah 
math
ajay gets 20 percent less marks than that of vatsals marks. by what percentsvatsals marks is more than Ajays marks
asked by TUHITUHI 
Math Algebra 2
Mr. Mullett has designed a playground for his 4 kids. This playground is awesome. The playground equipment is top of the line, multiple slides, swings, climbing wall and the playground area also includes a trampoline. What he doesn’t have is a sidewalk
asked by Curtis 
finance business
I want to buy a house in 3 years. I need to have a down payment of $20,000. How much do I need to have today in order to have that if I can earn 4.5%?
asked by Anonymous 
accounting
The following information is related to the Lilliput Veterinary Clinic for April 2010, the firm's first month of operation: Compute the cost of services rendered.
asked by Josh 
Stats
Can someone please explain how to find the frequency from: Lower limit:230,240,250 upper limit:239,249,259 Mid Value:234.5,244.5,254.5
asked by Alexander 
physics
A boat heads directly west across a river at 8.0 m/s while the river flows directly north at 2.0 m/s. Find VR.
asked by Elizabeth 
chemistry
Why is it important to list what you already know about a problem ?
asked by Kaitlyn 
Grammar
Is this grammatically correct? However, through influence by Lord Henry Wotton with his words, “Don’t squander the gold of your days, listening to the tedious, trying to improve the hopeless failure, or giving away your life to the ignorant, the
asked by Peter 
algebra
mike is a sales man at a large home electrocis store. he receives 3% commission on everything he sells. one day he sold $6500.00 worth of goods. how much commission did he make that day
asked by frank 
math
setup an equation or expression to model the situation below: in one year, sales for a company increase at a constant rate. after two months, the company sells 12,500 products, and after 8 months, the company sells 30,000 products. If the constant rate of
asked by sam 
math
setup an equation or expression to model the situation: a rectangle that would fit inside of the curve y=x^2+8
asked by sam 
cicivs
does hawaii have waterways? If yes, please name the waterways of hawaii and how it can help to shape the lives of people living in Hawaii. Please somebody help me because I looked all over my online civics book and i did research on waterways of Hawaii and
asked by Kate 
Math
An external sinusoidal force is applied to an oscillating system which can be modelled by a model spring and a damper. The general solution of the equation of the motion is given by, x = 5 + 3.071cos(2πt – β) + 3.14exp(7.96t) cos(αt + φ) where α,
asked by Darren 
Calculus
I need help with the following problem: You're in a hot air balloon with your support crew on the ground. Attached to the balloon are two tether cords of length 350 feet and 400 feet that your crew attached to the ground. These cords form an angle of 50
asked by Don 
chemistry
If 45 mL of .25 M HCl is required to completely neutralize 25.o mL of NH3, what is the concentration of the NH3 solution?
asked by baker 
Science  BTUs Please help
Although I vaguely see DrBob222's concept, I still need some help in the set up. Thank you. A 10 lb. frozen boneless roast needs to be thawed and baked to a temperature of 200 degrees F. The storage freezer maintains a temperature of 10 degrees F. Pork
asked by Sejul 
statistics
The lifetime of a 2 volt non rechargeable battery has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours.What is the z score for batteries with lifetimes of 600 hours
asked by Gee 
geometry
a Street in san franscico has a 20% gradethat is it rises 20' for every 100' horizontally. Find the angle of elevation of the street?
asked by jerry 
math
A box with a square base and no top is to be made from a square piece of cardboard by cutting 4in. squares from each corner and folding up the sides, as shown in the figure. The box is to hold 196 in3. How big a piece of cardboard is needed?
asked by roger 
AP Biology
Damaraland molerats are relatives of naked molerats. In their clans, too nonbreeding individuals of both sexes cooperatively assist one breeding par. Even so, breeding individuals in wild Damaraland molerat colonies usually are unrelated, and few
asked by Amelia 
Tech Communication
__________ is the art and craft of communicating appropriately and persuasively; it is concerned with the ways in which written, oral, and visual information is planned, conveyed, and interpreted in particular contexts.
asked by Mardiee 
physics
A westward force of 12 N acting simultaneously with another westward force of 4.0 N. Find FR and show a vector sketch
asked by Elizabeth 
physics
A plane is moving east at 100. km/h while the air around it moves at 30. km/h east. Find VR and draw a vector sketch.
asked by Elizabeth 
algebra
f the principal P = $500, the interest I = $250, and the rate r = 10%, find the following. (a) What is the time?
asked by ella 
medical coding
What is..in the ICD10CM may be synonyms or provide a list of various conditions included within a code classification
asked by Beth 
physics
Independent variable is volume, in cubic meters (m3). Dependent variable is pressure, in pascals (Pa). Data points are (0.1, 40), (0.5, 8), (1, 2), (4, 1), (5, 0.8), (8, 0.5), (10, 0.4). Following the directions above, write a mathematical expression for
asked by Anonymous 
english III AP class questions
So I've signed up for Ap this year. I was wondering, do the teachers expect us to know the meaning of terms such as: grammatical functions, rhetorical appeals, brevity, metonymy, and so on? We've been given a packet that gives a article we're supposed to
asked by Claire 
AP Chemistry
A 7.6 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 12.9 g. What was the mass of iron in the sample of ore? Answer in units of g
asked by Rafael 
math
A man buys 3 items for $100. Each item is 50% less than the first. Total of all 3 has to be $100. Is this possible?
asked by mary 
Absolute Vale
Find all numbers x for which x1 + x2 > 1. I know the answer is that there exists no such x, but I need someone to explain to me the steps as to figuring out why that is the case.
asked by Mo 
English help
what are the purpose of litotes?
asked by taylor 
Physics
An elevator is moving upward at 0.97 m/s when it experiences an acceleration 0.34 m/s 2 downward, over a distance of 0.80 m. What will its final velocity be?
asked by Dakota 
math
A department store purchases an mp3 player for $50. To sell the mp3 player to customers, the price is marked up by 15%. You hand the clerk $70. How much change will you get back?
asked by Anonymous 
math
what is the smallest and largest whole number that rounds off to 220?
asked by andrei 
MATHS
Edward has $40 more thanFariq. If Edward gives 1/5 of his money to Fariq. Fariq will have7/8 as much money as Edward. How much money do they have altogether.
asked by PLS HELP 
sculpture
I have Art III Ceramics. I need a concentration piece to make at least 5 sculptures. I decided on pandoras box. the 5 emotions that were chosen were hope, sickness, vanity, jealousy, and lazyness. I know this is an uncreative way to get a concentration
asked by Nikki 
accounting
If sold inventory had cost 1500 for 2750 on a account under terms 2y10, ny45
asked by mike 
chemistry
if 14.7g of na reacts with 7.9g og br how many grams of nabr are found
asked by Anna 
statistics
The cholestetol levels of young women aged 20 to 34 vary with a mean of 185 milligrams per decliter and standard deviation 39 mg/dl. What cholesterol level would be a young woman have in this age group if they were 2 standard deviations below the mean?
asked by Gee 
science
Suppose you are presenting a science project that compares the temperatures of several different substances. Would you present your findings using degrees Farenheit, Celcius, or Kelvin? Explain.
asked by Anonymous 
matematicas
minimo comun denominador de 4 y 9
asked by yari 
Physics
How much energy (in cal) is required to raise the temperature of 15.0g of isopropyl alcohol from 10.0 C to 25.0 C?
asked by Stacie 
calculus
Solve lim x>7+ as....sqrt(x7)^3/(x7). I found that it equals 0, but I don't know if I did everything right.
asked by Nycw 
math
The buyback buy store is going to make an order which will include at the most 60 refrigerator. 71 refrigerator and 118 the.
asked by jay 
math
if the reciprocal of the opposite of a number, x, is equal to 9 times the opoostie of the number, then the number could be?
asked by john 
matha
the sum of area and perimeter ofintegral right angle triangle is 288. find the sides.
asked by Anonymous 
math
setup an equation or expression to model the situation below: what is the volume of a box that can be created from a sheet of metal that measures 12 inches by 30 inches? assumer there is no top to the box.
asked by sam 
math
how to simplify the following,please step by step 56x^7+21x^4+63x^3
asked by Ana 
math
order 3/10 from least to greastest
asked by mara 
social studies
what countries that wanted to populate the New World.
asked by sarah 
physics
A plane flies south at 220 km/h and is blown west by a 90. km/h wind. Calculate the resultant speed.
asked by Elizabeth 
Math
Anthony estimated the following problem: 15,296 + 28,281 He rounded to the ten thousands place. His estimate was 40,000. Did he underestimate or overestimate? Explain.
asked by Ryan 
religion
Jains do all of the following EXCEPT A. perform puja in temples B. practice purification rituals C. meditate and reflect to perfect one's character D. offer ritual sacrifices to gods
asked by ronaldo 
precalc review/calc
For the curve y=2^[sqrt(9x2)], find the range of the function. I think the range is [0,8] but I don't know why. Could you show me how to get to that answer? Thanks.
asked by jane 
algebra
8
asked by kevin 
physics
A crane uses a block and tackle to life a 25 kN boulder to a height of 26 m. a. how much work is done on the stone? put your answer in scientific notation. b. if the work is done in 15s, what is the power output in watts and in horsepower?
asked by Rose 
chemistry
5.0% glucose has a specific gravity of 1.02. what is the mass of 470mL of glucose solution.
asked by Travis 
Math
A cylindrical can with both a top and bottom has the same surface area as a cube with edge 50mm. The height of the can if 6cm. Find the radius of the can to the nearest thousandth.
asked by KC 
math
(2 revolutions/second)(60 seconds/minute) would this just be: 2 rev. per second • 60 seconds= x rev. per minute 120 revolutions per 60 seconds 120 revolutions per minute answer= 120 revolutions per minute
asked by Courtney 
philospy 103
In the conditional "P →Q," "P" is a my answer is necessary condition for P
asked by me 
math
let x and y be whole numbers greater than 0 with y>x which has the greater value 3x or 3y
asked by Anonymous 
chemistry
What volume of 2.50 x 104 M CV+ solution should be diluted to 10.0 mL to prepare a 7.50 x 105 M CV+ solution
asked by Jordan 
Science
Container A and B both container the same kind of liquid. Container A has a volume of 5 mL and Container B has a volume of 8 mL. Which container, if either has the highest density? Explain your Answer.
asked by Rachel 
math
In bowling, a handicap is determined by subtracting your bowling average from 180 and then finding 80% of this difference. Freddie bowls games of 178, 156, 149, 155, 172 and 180. Freddie's handicap is__________. I came up with 12. Could you check if this
asked by john 
math
The buyback buy store is going to make an order which will include at the most 60 refrigerator. 71 refrigerator and 118 the.
asked by jay 
English
A: Seho, what are you doing? B: Hi, Inho. I'm doing my math homework. A: Hurry up! We have to play soccer in the playground. B: We have a soccer match on Thursday. Today is Wednesday. A: No, it's Thursday today. Come here quickly. B: Sorry. I'll be there.
asked by rfvv 
math
setup an equation or expression to model the situation below: find the shortest distance from the point (2,4) to the curve y=4x^3+1
asked by sam 
Math
Jarrod wants to save $245 to buy a Wii gaming system. If he was saving $35 each month, how long would it take him to have the needed money? 7 months? The border between Texas and Mexico is 248 miles. If there are 32 countries along the border, about how
asked by Alex 
Math
7. If 6x=secӨ and 6/x=tanӨ then find the value of (X21/X2)
asked by Minakshi 
4th grade math
it is a three digit whose ten digit is 3 its hundred digit is 4 more than its one digit, which is an odd number less than 5 no two digits are the same I need help on how to do this. too many years for mommy
asked by daniel's mom 
Algebra
.428571428571 with the digits 4,2,8,5,7,1 repeating indefinitely in that order. What digit is in the 200th place. To the right of the decimal point? Is the answer 8? Please show your work.
asked by Anonymous 
chem
Pka=pH when[HA]=[A ]. What is [A]/[HA] WHEN PH=PKA+1 AND WHEN pH=pka1
asked by ron 
math
2x^3+7x^318x63
asked by Alexis 
math
a company has two job opening and has received a total of 50 applications. what is the chance that an applicant will get hired?
asked by frank 
HISTORY
During the turbulence of the 1960s, black activism focused primarily on A. stopping the Vietnam War. B. supporting the nonviolent strategies of Martin Luther King, Jr. C. expanding voting rights. D. expanding economic opportunity. I THINK IS D. IS THAT
asked by JESSICA 
algebra
3x/y  5
asked by anne 
math
is surface area squared? if I got 201 meters for the surface area would it be: 201 meters or 201 meters ^2
asked by Courtney 
social studies
Is there 51 states? Is DC considered as 5lst or Puerto Rico 51st
asked by Tyler 
math
Some 4 digit numbers have 4 digits that have a sum of 23. what is the smallest such number that is a multiple of 4?
asked by darla 
College Math
What would 10 to the 16th power be?
asked by Carol 
math
Does (4a)^2 = 16a^2 or 4a^2 ???
asked by Ari 
math
solve the absolute value 3/2x+4/1=11 // stands for brackets could someone explain /2x+7/26 /2x1/=3 I do not understand if someone could help
asked by brandon 
algebra
evaluate the expression for variables (4h1)/1+h;h=2 /4b8/+/1b^2/+2b^3;b=2 9c6d+4c3d 9/98x=2x+3 If anyone could please help me, these I have not been able to figure out. Any help is appreciated. Thank you
asked by kevin 
math
how to work out root 5 of 0.035
asked by wan 
world history
3 most important moments of democracy?
asked by amy 
Math
Convert 60,000 BTU/hr to in.cubic feet/minute.
asked by Sam 
math
a=73a. for example 2=73(2)=1. if 6x=2x, find the value of x. the problem i am having is that the first a is in a square box and the first 2 is in a squre box. so does 6 and x in a square box. I am not sure what the boxes represent?
asked by john 
Prealgebra
2/3(7x+6/7)=160/63
asked by Aaron 
HIS 103
How has the nature and technology of warfare evolved, from earliest times to 1500 CE?
asked by Anonymous 
9th grade chemistry
what is the
asked by simia 
english
Many greek tables had three legs that ended in feet shapec like paws. Am I correct in saying this is adjective clause
asked by kayla 
algebra
115=5(1+4b)
asked by lane 
math
54x^516x^2
asked by Alexis 
Algebra
(2y) (y+11)
asked by janeAnn 
home economics
what does applique and embroiderymean ?
asked by pope