# Laurie expects to make $100,000 in 2007. Her social security tax rate is 6.20% up to the wage base, Medicare is 1.45%. How much FICA is Laurie expected to pay for the year

75,574 questions, page 530-
## math/algebra

Compounded semiannually. P dollars is invested at annual interest rate r for 1 year. If the interest is compounded semiannually, then the polynomial P(1+r/2)^2represents the value of the investment after 1 year. Rewrite this expression without parentheses.

*asked by Debbie on February 27, 2009* -
## math

amy is paid time and a half for hours worked in excess of 40 hours and double time for hours worked on sunday. If her weekly wage was $342 for working 50 hours, 4 of which were on sunday, what is her regular hourly rate?

*asked by lily on September 1, 2008* -
## calc

Suppose the cost C(q) (in dollars) of producing a quantity q of a product equals C(q) = 500 + 2q +1/5q^2 The marginal cost M(q) equals the instantaneous rate of change of the total cost. Find the marginal cost when a quantity of 10 items are being

*asked by ty on February 8, 2010* -
## probability

Consider a Poisson arrival process with rate λ per hour. To simplify notation, we let a=P(0,1), b=P(1,1), and c=P(2,1), where P(k,1) is the probability of exactly k arrivals over an hour-long time interval. What is the probability that we will have “at

*asked by Brian on November 26, 2018* -
## Calculus (30min before deadline help pls )

A street light is at the top of a 16 ft pole. A 5 ft tall girl walks along a straight path away from the pole with a speed of 3 ft/sec. At what rate is the tip of her shadow moving away from the light (ie. away from the top of the pole) when the girl is 36

*asked by Amelia on April 9, 2016* -
## science

a substance was found to have a renal clearance that was lower than the glomerular filtration rate. In reguards to this substance what major processes of urine formation are certain to have occured. Explain 3 major urine formation processes either occurred

*asked by Anonymous on July 23, 2013* -
## Math

A plumber's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. He moves the same amount to fill the trench. What is his pay for this job?

*asked by Rhett cowley on April 30, 2014* -
## trig

two trains leave Kansas City at the same time. Train A is traveling due north at 55 mph, train B is traveling west at the rate of 65 mph. Find the distance between the two trains two hours later and the bearing of train B from train A.

*asked by Anonymous on October 16, 2012* -
## physics

a student is on a rotating merry-go-round at a constant rate and tosses her apple in the air. if the apple in thrown up with a velocity of 1.2 m/s and the student catches it again after rotating 5.00 revolutions, how fast is the merry-go-round spinning in

*asked by Kaylee on February 20, 2013* -
## Calc

Air is being pumped into a spherical balloon so that its volume increases at a rate of 90{cm}^3/s. How fast is the surface area of the balloon increasing when its radius is 7{cm}? Recall that a ball of radius r has volume \displaystyle V={4}/{3}pie r^3 and

*asked by Vince on March 15, 2009* -
## Adv. Math

Find the interest to the nearest cent Question #1 Amount: $5432 Annual Interest Rate: 6.2% Time: 3 years Question #2 $4500 at 5.5% for 4 1/2 years Question #3 $3680 at 6.75% for 2 1/4 years Question #4 5.5% for 1 3/4 years on $2543 I'm sorry for so many

*asked by Kenya on April 7, 2008* -
## economics

After an unexpected increase in the price of oil, the long run adjustment_____ the price level and_____the unemployment rate as they return to original levels. a- decreases, increases b- increases, increases c- increases, decreases d- decreases, decreases

*asked by dave on October 7, 2009* -
## Math

A ship leaves port at 1:00 P.M. and travels S35°E at the rate of 28 mi/hr. Another ship leaves the same port at 1:30 P.M. and travels S20°W at 18 mi/hr. Approximately how far apart are the ships at 3:00 P.M.? (Round your answer to the nearest mile.) I

*asked by Jade on August 1, 2017* -
## Business math

A plumber's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. He moves the same amount to fill the trench. What is his pay for this job?

*asked by Jagara on May 22, 2012* -
## calculus

Water is pouring into a conical vessel 15cm deep and having a radius of 3.75cm across the top. If the rate at which the water rises is 2cm/sec, how fast is the water flowing into the conical vessel when the water is 4cm deep?

*asked by Arvin on November 2, 2012* -
## calculus

a woman on a dock is using a rope to pull in a canoe. the rope is pulled at the rate of 2 ft/sec, 3ft above the point level with the connection of the rope to the canoe. How fast is the canoe approaching the dock when the length of the rope from her hands

*asked by Joshie on October 6, 2010* -
## word unscramble

need help unscrambling a word or words tarluna what is it HELP ME UNSCRAMBLE THESE LETTERS TO MAKE A WORD THAT PERTAINS TO SPACE AND IS A P POSSESSIVE NOUN. SEGHRTMLAN J'aodredefis Please post the word or words you need to unscramble, and we'll try to help

*asked by amy on September 28, 2006* -
## Cultural Diversity

I am supposed to write a small research paper identifying the linguistic, political, social, economic, religious and familial conventions and or status of 4 Hispanic groups living in the US. I have to write on Mexican Americans, Puerto Ricans and then pick

*asked by Christi on April 6, 2007* -
## conjectures

I'm finishing my math 20 Pure. This is my last 20 course then i have 30's. Also I have to work a full time job so that I can live on my own with my boy. So it is tough but I'm doing alright. What about you? wow, okay i have no idea what all that is but

*asked by Shay on February 25, 2007* -
## managerial economics

Inter-temporal Price Discrimination. Suppose that technophiles are willing to pay $400 now for the latest iPhone, but only $300 if they have to wait a year. Normal people are willing to pay $250, and their desire to purchase does not vary with time. Ignore

*asked by Shawn on September 30, 2012* -
## Chemistry

The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2+ (aq, 0.100 M)||Zn2+ (aq, ____ M)|Zn(s) is 24.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode. Hi, I posted this question awhile back but I think it

*asked by Katherine on June 7, 2012* -
## calculus

A rocket rises vertically from a point on the ground that is 100m from an observer at ground level. The observer notes that the angle of elevation is increasing at a rate of 12∘per second when the angle of elevation is 60∘. Find the speed of the rocket

*asked by ibo on September 29, 2010* -
## Math

I hate word problems! Can anyone just change this Following word prob to equations pls. I can do the rest! Sam invested $4500, part at 7%, the rest at 8 1/2%. After one year, the interest earned on 7% investment was $150 less than the interest earned on

*asked by Me on April 15, 2010* -
## Physics

Hello I am trying to solve this physics problem related to effusion of gases. The following data is given and I am asked to calculate the rate of effusion The data given; depth/thickness (t) Surface area (A) diffusion coefficient (D) Can someone help me

*asked by Sam on December 15, 2012* -
## chemistry

Consider the reaction A + X products. Two trials are performed at the same temperature and using the same reaction medium. The initial rate is found to increase by a factor of 2.83 when the molar concentration of X is doubled and the molar concentration of

*asked by Alexis on August 6, 2008* -
## Chemistry(Please check)

The decomposition of an aldehyde solution in carbon tetrachloride is a first order reaction with a rate constant of 1.20 x 10-3 min-l. If we start with [aldehyde] = 0.0500 molar, what will the concentration be 150 minutes later? 1.20e-3(150) = 0.18

*asked by Hannah on February 20, 2012* -
## Math

A plumber's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. He moves the same amount to fill the trench. What is his pay for this job? $___________ (These questions are all confusing)

*asked by Leo on June 14, 2012* -
## Finance

Calculating Cost of Equity. The Lo Tech Co. just issued a divident of $2.20 per share on its common stock. The company is expected to maintain a constant 6 percent growth rate in its dividends indefinitely. If the stock sells for $43 a share, what is the

*asked by Jina on December 1, 2012* -
## Math

A property management company furnishes skilled help to maintain apartment complexes. If employees are paid $16 per hour and the company wishes to maintain a 30% markup based on the employees’ hourly pay, what hourly rate should it bill property owners?

*asked by Heyhi on May 6, 2018* -
## MATH WORD PROB Function

To rent a conoe, you pay a fee of $25 and an hourly rate of $5. Express the total cost of a rental as a function of hours, h. Then use the fuction to dertmine the total cost to rent a conoe for 8 hours. The equation should be written in slope intercept

*asked by andra on October 16, 2013* -
## Calculus

Air is being pumped into a spherical balloon so that its volume increases at a rate of 80 cm^3 per second. How fast is the surface area of the balloon increasing when its radius is 9cm? * ball of radius r has volume V=(4/3)pi r^3 and surface area S=4pir^2

*asked by Susanna on October 25, 2012* -
## physics

an adult elephant has an average shoulder height of 350 cm and average mass of 5,7000 kg. If an elephant initially at rest was to be lifted by a cable to a height of 20 m (a) What is the tension in the cable if the elephant is accelerating upwards at rate

*asked by brando on August 29, 2014* -
## Trigonometry

Rapunzel is located in the highest room f a tower, and Prince Charming has come to save her is 100 m away from the base of the tower. If the Prince estimates that he is looking at Rapunzel's room at an exact 45 degree angle of elevation. How long must

*asked by Jake on January 23, 2010* -
## Physics.

A punter kicks a football at an angle of 45 degrees to the ground. The football has an initial velocity of 25 m/s, make a diagram and calculate: a) How long was the football in the air? b) How far does the football travel horizontally? c) What is the

*asked by Noemi on January 13, 2013* -
## poetry

In school i have to write a POEM about story from the newspaper. can anone help me? that's the story: TAMWORTH ONE COPS IT IN COPSE, ENDING GREAT ESCAPE. After more than a week on the run the Sundance Pig was not going to come quietly. His partner might

*asked by Patric on March 19, 2010* -
## Math - Calculus

A boat is pulled into a wharf by a rope at a speed of 20m/min. If the rope is attached to a point on the boat 7m vertically below the wharf, at what rate is the rope being drawn in when the boat is 24m from the wharf?

*asked by Marilyn on July 6, 2018* -
## c++

Your Mathematic school teacher want to use a program that can read the name and the mark of a student. Your teacher want the program to automatically find the grade of the mark and display the result(name, mark and grade). Help your teacher to develop a

*asked by sarah on October 11, 2012* -
## Math

Mrs. Scott decided that she would spend more no more than $120 to buy a jacket and a skirt.If the price of jacket was $20 more than 3 times the price of the skirt.Find the highest possible price of the skirt. I have the answer but they add another variable

*asked by Brandon on December 5, 2016* -
## Physical Science

HELP WITH THESE PLEASE! If you ride your bike at an average speed of 4km/h and nee to travel a total distance of 28 km, how long will it take you to reach your destination? A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic

*asked by Audriana on August 7, 2013* -
## College English

I work for a large company. My boss was fired and I get promoted. I must do a power point to address a customer issue. A client was promised 10,000 bolt cups to use in their new truck engines. The parts were received for us to manufacture, but they were

*asked by Maurice D on October 31, 2010* -
## physics!

An Alaskan recue plane drops a package of emergency rations to a stranded party of explorers, as illustrated. The plane is traveling horizontally at 100.0m/s at a height of 50.0 m above ground. What horizontal distance does the package tral before striking

*asked by emily on December 9, 2008* -
## Reiny

Solve: -x^4 + 200 = 102x^2 I know the last line was wrong I just took a guess on factoring it out. I just knew how to do the first 2 lines. The problem has no typos it is -x, its crazy but that's how it is in my book. how does that change the answer? "Your

*asked by Jon on March 3, 2008* -
## psychology

Paul thinks of himself as an excellent negotiator after purchasing a brand new car.two months later,his brother in -law Noah purchases the same model for $1,000 less than Paul paid!According to cognitive dissonance theory,Paul will probably: a)decide that

*asked by vedrana on October 16, 2009* -
## Math probabilty

An amusement park, Dino World, considering adding some new attractions, conducted a study over several typical days and found that, of 10,000 families entering the park, 1020 brought just one child (defined as younger than age 12), 3370 brought two

*asked by sky on July 10, 2011* -
## MATH

Two brands of paper towels are priced and described like this: Brand A: 100 sheets per roll for $1.20 a roll. Brand B: 60 double sheets per roll for $1.44 a roll. Which brand’s roll has the most “towel” for the money?

*asked by meshelle on December 5, 2008* -
## american government

1. Which of the following government actions have the greatest impact on promoting racial equality and housing? A. The passage of the title IX amendment to the civil rights act of 1964 B. The passage of the civil rights act of 1968 C. The Supreme Court

*asked by v on November 3, 2017* -
## Math

Suppose you have two numbers. The difference of the two numbers is 12. The product of the two numbers is 17. Multiply the larger of the two numbers by 100, add 50 times the smaller number to that, round the total to the nearest whole number. That starts

*asked by Lesa on March 24, 2007* -
## statistics

3 different drugs are under consideration for trating a given ailment. in the past 10,000 applications, drug A was sed 2500 times, drug B 4000 times, and drug C 3500 times. when an expert was asked to rank the effectiveness of the 3 drugs, he replied:

*asked by Albert on November 12, 2009* -
## Math

In Wilbur's math class, his grade is based on the average score of six tests, each worth 100 points. Wilbur always worries about his grade. He knows that his average on the four first tests is 88.5. What is the lowest average he could get on his next two

*asked by Katherine on September 22, 2010* -
## math

Match club charges annual membership dues of 100 pesos per member, less 0.50 cantavo for each member over 600 and plus 0.50 centavo for each member less than 600. How many members should give the club most revenue from annual dues?

*asked by zeff on October 6, 2016* -
## Math

A hospital was out of juice at the end of September. They bought 200 cases on October 1 at $10/each and 200 more cases on November 1 at $12. There were 100 cases left at the end of October. What is the total of the first scare expensed on November 2nd?

*asked by Alex on March 18, 2016* -
## ochem

A sample of Limonene has a specific rotation of +76.9. What is the % ee and molecular composition of this sample? R(+)- is +125.6 and S (-)- 122.1. I'm confused I don't know whether I should divided by 125.6 or 122.1. %ee=(76.9/125.6)*100=61%. Is this

*asked by bjisa on November 13, 2010* -
## Algebra II

Among 100 coffee drinkers, 36 said that they preferred their coffee black and the rest did not prefer their coffee black to those who prefer non black coffee. Find a ratio for each of the following and write it as a ratio of integers in lowest terms. I do

*asked by Christopher on March 7, 2010* -
## Chemistry

Kidney stones are composed of crystals of calcium oxalate, CaC2O4. The solubility of CaC2O4 is 6.7 x 10-5 g per 100 ml of solution. What is the pH of a saturated solution of calcium oxalate? (Molar masses of Ca, C and O are 40.0 g/mol, 12 g/mol, 16 g/mol

*asked by Milana on July 13, 2012* -
## calculus

Match club charges annual membership dues of 100 pesos per member, less 0.50 cantavo for each member over 600 and plus 0.50 centavo for each member less than 600. How many members should give the club most revenue from annual dues?

*asked by zeff on October 2, 2016* -
## Algebra II

Logarithms The brightness of an astronomical object is called its magnitude. A decrease of five magnitudes increases the brightness exactly 100 times. The sun is magnitude -26.7, and the full moon is magnitude -12.5. The sun is about how many times

*asked by Anonymous on April 1, 2015* -
## Precalculus

A line segment has endpoints A=(1,3) and B=(13,19). a) Find the equation of the circle for which the segment AB is a diameter. Ans: (x - 7)^2 + (y - 11)^2 = 100 b) Accurate to the nearest tenth, the circumference of this circle is _______ ? I was able to

*asked by jh on March 9, 2010* -
## geometry

A scale for a scale drawing is 10 cm:1 mm. Which is larger, the actual object or the scale drawing? Show work. --I understand that the answer is 100 times larger since 10mm equals 1cm. BUT how do I show the work of how this is solved? THANK YOU!

*asked by Tim on December 1, 2015* -
## science, chemistry, biotechnology

"You're creating a standard curve for pyruvate. You need to create a standard with 20 micromoles in a cuvette. How much 100 mM pyruvate would you need?" My understanding is to solve for VOLUME using the equation: micromoles = (mM)(volume in ml) 20

*asked by Jennifer on October 1, 2014* -
## statistics

A marketing research shows that for every 100 flyers distributed to potential customers, 1.2 customers will be captured. If 10000 flyers are being distributed, find a. the probability that 150 customers are captured b. the expected value of this

*asked by Anonymous on January 12, 2016* -
## science

A student adds 3 spoons of salt to 100 ml of water. The solution is clear with nothing on the bottom of the cup. One spoon of the salt has a mass of 5g. What is the mass of the solution? After the water evaporates what is the mass of the solid remaining in

*asked by linda on September 24, 2015* -
## Math

A hospital was out of juice at the end of September. They bought 200 cases on October 1 at $10/each and 200 more cases on November 1 at $12. There were 100 cases left at the end of October. What is the total of the first case expensed on November 2nd?

*asked by Alex on March 18, 2016* -
## social studies

can someone please help me with the Global Convergence study guide? WORD BANK: Conquistadors India Sugar agriculture and manufacturing exposure to diseases Indian Ocean social pyramid South Seized appointment horses Astrolabes fewer furs Illegal smuggling

*asked by gm:) on October 26, 2018* -
## Thermodynamics

Posted by Danny on Saturday, July 13, 2013 at 9:42am. 1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000

*asked by Danny on July 14, 2013* -
## personal finance

Jo owns 150 shares of Delta General stock. She purchased the stock for $24 a share. She sold the stock for $30 per share. The commissions required to buy and sell her stock cost her $120. Assuming that she received no dividends (income) during the time she

*asked by morgan on April 14, 2013* -
## econ

You want to determine the profit-maximizing production quantity for a monopolist. You can ask the firm's consultant to draw the firm's revenue and cost curves, but each curve would cost you $1,000. From the following list indicate which curves you will

*asked by bob on April 12, 2014* -
## Macroeconomics

You want to determine the profit-maximizing production quantity for a monopolist. You can ask the firm's consultant to draw the firm's revenue and cost curves, but each curve would cost you $1,000. From the following list indicate which curves you will

*asked by Heather on July 10, 2012* -
## help needed with math

instead of buying packages of 20 batteries for $7.00 to power his video game controllers, Nathaniel decides to buy 4 rechargeable batteries and a charger for $15.39. How many times does he need to use the rechargeable batteries to make them a better value?

*asked by Thelma on June 5, 2014* -
## Math

You have 700 ft of fencing to make a pen for hogs. If you have a river on one side of your property, what are the dimensions (in ft) of the rectangular pen that maximize the area? shorter side longer side

*asked by Meghan on April 7, 2018* -
## science

Which of the following will make it harder in the future to develop sustainable methods for humans using resources? 1) there will be fewer renewable resources 2) more humans will populate the earth 3) more humans will recycle mterials

*asked by Jaden on November 22, 2016* -
## math

A farmer has 25 yards of fencing to make a pig pen. He is going to use the side of the barn as one of the sides of the fence, so he only needs to fence 3 sides. What should be the dimensions of the fence in order to maximize the area?

*asked by A farmer has 25 yards of fencing to make a pig pe on December 21, 2018* -
## Physics

Earth's moon is 3.8 X 10 8 m from the planet and is in freefall. Acceleration due to the Earth's gravity acting on the moon is 2.70X 10 -3. What is the moon's speed? How long does it take to make a complete orbit?

*asked by Julie on April 22, 2010* -
## math word problem

instead of buying packages of 20 batteries for $7.00 to power his video game controllers, Nathaniel decides to buy 4 rechargeable batteries and a charger for $15.39. How many times does he need to use the rechargeable batteries to make them a better value?

*asked by thelma on June 4, 2014* -
## Math

I need help with the following math problem. A sculptor has a 3lb block of clay. He ads 24 oz. of clay to the block in order to make a sculpture. What is the total weight of the clay before he begins sculpturing?

*asked by Jared on November 29, 2010* -
## algebra

A farmer has 25 yards of fencing to make a pig pen. He is going to use the side of the barn as one of the sides of the fence, so he only needs to fence 3 sides. What should be the dimensions of the fence in order to maximize the area?

*asked by shamsia on December 19, 2017* -
## Math

A shopkeeper marked the price of an article a certain percent above cp and he allowed 16% discount to make 5% profit. If a customer paid rs.9492 with 13% vat to buy article by what percent is MP above CP of article?

*asked by Gho on June 5, 2016* -
## math

crusty bought balloons at 5 for $1 and sold them 3 for $1. if his profit from selling balloons was $20, how many balloons did he sell? 1- how much did crusty make for every balloon? 2- what open sentence (equation) would we wite to solve this?

*asked by micaela on October 10, 2012* -
## English

Word box compact earmark scant strident Since the time we have to prepare for the final exams is exceedingly ____ we had better make the best of every hour This one is compact or scant? I think it's compact

*asked by Jerald on March 20, 2013* -
## math

a hot air balloon is tied to the ground with 200 ft. of rope. The wind is pushing the balloon to make a 23 degree angle with the ground. What is the real height of the balloon?

*asked by ss on December 10, 2012* -
## algebra 2

. A tile setter is joining the angles of two tiles, A and B, to make a 90-degree angle. The degree measure of Angle A can be represented as 3y + 2 and of Angle B as 5y. Which equation represents this situation? these are the one I neeeed help with

*asked by hannah on October 24, 2013* -
## AP Chemistry

Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.036 moles of sulfuric acid is mixed with water to make 576 mililiter of solution, what is the molarity of H+?

*asked by J. A on September 30, 2012* -
## law office management

when one person has the power and authority to make all decisions for the firm it is known as an _______ type of management. a. management by committee b. autocratic c. management by stakeholders d. executive committee im confused between A and D

*asked by Nile on October 26, 2011* -
## math

Emily has a coupon for 20% off her purchase. She finds a backpack on the discount rack. It's original price is $60 but is 30% off. Emily thinks 30% and 20 % make 50% so the backpack will be $30. Is Emily correct? Explain your answer.

*asked by john r on December 9, 2016* -
## algebra

A farmer has 25 yards of fencing to make a pig pen. He is going to use the side of the barn as one of the sides of the fence, so he only needs to fence 3 sides. What should be the dimensions of the fence in order to maximize the area?

*asked by kk on February 18, 2015* -
## Social Studies

Jury duty is A right, because it is discussed in the US constitution A right, because only some citizens are required to do it. A responsibility, because citizens citizens do it to help protect people's rights A responsibility because judges cannot make

*asked by Answer quickly please on November 13, 2015* -
## math

Brittany is making trays of fudge. her recipe calls for 2/3 cup of walnuts for each batch of fudge. How many cups of walnuts does she need to make 27 batches of fudge I need to show how I got this answer

*asked by Judy on February 11, 2013* -
## english 3

What did Smith note the President? Please clarify your question. Is a reference to a book? Which Smith? Also -- as written, your question doesn't make any sense to me. We'll be glad to help you when we understand your question and to what it's referring.

*asked by Anonymous on June 19, 2007* -
## MAth

the high soccer team can have no more than 26 players.write and solve an inequality to determine how many more players can make the team if the coach has alreadychosen 17 players. i need the inquality,interpretation,solution

*asked by StickyDoom on February 4, 2016* -
## math

Carla the baker worked four hours to make cookies. She ended with 380 cookies altogether. Write an equation to express how many cookies Carla made each hour.

*asked by Andrea on March 28, 2018* -
## Algebra, math

how do I find a value of x that will make each proportion true?? 12 = x ___ ___ 16 20 and 8 = 14 __ ___ 12 x Cross multiply to find x. Here's the first one; perhaps you can try the second one on your own. 12/16 = x/20 16x = 240 Divide both sides by 16 to

*asked by Joe on April 9, 2007* -
## Math12

desrribe what happens to the equation of a function when you make each change to its graph a)compress horizontally by a factor of 1/4, and vertically by a factor of 1/2 b)expand horizontally by a factor of 2, then translate 3 units left

*asked by John on September 21, 2008* -
## math

when dealing with sigma notation, if i enclose my formula with parenthesis,does it make it different from a formula with no parenthesis? plz help, I saw this in regents prep webpage and I just didn't see any difference, but they say that the parenthesis

*asked by Lauren on June 23, 2016* -
## Chemistry

A stock solution of sulfuric acid must be diluted by adding 25.0mL of 7.50M H2SO4 to enough water to make 500mL of diluted soultion. What is the concentration of the diluted solution?

*asked by Anonymous on October 10, 2016* -
## Algebra

Suppose a farmer has 120 feet of fencing to make a rectangular barnyard enclosure. If the enclosure is x feet long, express the area A of the enclosure as a function of the length x.

*asked by Angie on June 22, 2009* -
## trig

find the exact value given that cosA=(1/3) in quad I, sin B=(-1/2) in quad 4, and sin C=(1/4) in quad 2 tan(B+C) ? At the end of my equation I had (sqrt45/15) over (1-sqrt15/15) , how do I rationalize or did I make an error in calculation

*asked by stacey graham on March 27, 2010* -
## Math- word prolems

Making a cylinder is costing your company $2/in^2 for top and bottom and $6/in^2 for the body(side). If the cylinder is to have 166.25oz volume, what are the most economical cylinder that you can make and what will be the cost of making it.

*asked by Sam on October 25, 2015* -
## chemistry help

ok so i need to find how many atoms make up the earth. the average atomic mass of the atoms is 14g/mol. avogadro's number gives the number of atoms in a mole. so what atom do i take?? carbon or something??

*asked by RAYMOND on September 17, 2009* -
## System Analysis &Design

What should my entities be? Consider the following situation. A manufacture of computers receives orders from customers through its sales office. Each order can have several products in it (different types of computers, lap tops, monitors, and other

*asked by Lapri on April 27, 2009* -
## science

can you inscramble these letters to make 2 words first word 12 letters, 2nd word 5 letters ietnnrncuinvtohte Thank you for using the Jiskha Homework Help Forum again. I answered the first one I saw, which was just before this one!

*asked by katie on April 19, 2007* -
## algebra

it costs $2000 to purchase a copier, and each copy costs $0.02 to make. what is the fixed cost? what is the variable cost? and what is the cost equation for c in the terms of x?

*asked by salha on April 20, 2016*

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