Questions Asked on
March 1, 2011

chemistry
What are the differences between ionic bonds and covalent bonds?
asked by Jackie 
bca
____ is the code of acceptable behaviors users should follow while on the Internet; that is, it is the conduct expected of individuals while online.
asked by greg 
Francais
Je pense que vous cachiez quelque chose dans tes estomacs: is the subjunctive in cachiez correct? (I think that you are hiding something in your stomachs).
asked by Taylor 
chemistry
why is hydrogen bonding inly possible with hydrogen?
asked by Jackie 
geometry
Find, to the nearest tenth of a centimeter, the length of a diagonal of a square if the measure of one side is 8.0 centimeters.
asked by Timothy 
Science
What can you conclude about the reverse change Cr2O7 to 2 CrO4 and its dependence on hydroxide ions? Produce a balanced equation bu adding the proper number of OH ions and H2O molecules to the appropriate sides of the equation.
asked by Carlina 
Algebra 2
I am totally lost! (3x^48x^2 3x3) / (x^23)
asked by Paige 
Physics : Please Help Me!!!
In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why.
asked by Andrea 
statistics
The distribution of the heights of men in the U.S. is normally distributed with a mean of 70 inches and a standard deviation of 5 inches. a) What is the probability of an american male being less than 60 inches tall? b) What is the probability of an
asked by Maddie Liguori 
statistics
The income of college students is normally distributed with a mean income per year is $12,000 and a standard deviation of $6,000. a)If we randomly sample 25 college students, what is the probability that the average income of our sample is less than
asked by Maddie Liguori 
precalculas
the amount of bacteria in a petri dish increased by a percent change of 12% each hour over a period of 15 hours. a. find the growth factor for 1 hour? b. by what total percent did the bacteria change during this 15 hour time period.? c. how long will it
asked by katrina 
Statistics
In the harper valley subdivision, 79% of the houses have a deck while 49% of the houses have both a deck and a garage. Find the probability that the home has a garage given that it has a deck
asked by Sherry 
sociology
The general trend of American's attitudes toward the unmarried had been from an attitude of _________ in the 1950s to and attitude of _________ in the 2000s
asked by ashley 
sociology
The general trend of American's attitudes toward the unmarried had been from an attitude of _________ in the 1950s to and attitude of _________ in the 2000s
asked by ashley 
statistics
A supplier of plastic pellets claims that when the plastic is pressed into wafers of uniform thickness, they will have a mean breaking strength of 165 newtons and a standard deviation of 5 newtons. An engineer at the company randomly selects wafers from 12
asked by Maddie Liguori 
accounting
I need help with Intermediate Accounting 303 online
asked by Candace 
Chem
If you prepared a solution by adding 0.05mL (1drop) of 0.5M HCL to 5 x 10^7 mL of "pure" water. Calc the resultant PH. The answer isn't ph= 9.3. you have to add all the hydronium ions from all sources... but how ?
asked by Jake 
SQL
Explain why the following command would create an error, and what changes could be made to fix the error. SELECT V_CODE, SUM(P_QOH) FROM PRODUCT;
asked by ben 
hum176
can u help me get a better understanding of why freedom of speech allows a variety of pop culture media to be released.
asked by Kalei 
chemistry
why is hydrogen bonding only possible with hydrogen?
asked by Jackie 
Physics
If an 80kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated?
asked by Cher 
geometry
Basic Geometry 1. Find the perimeter of a rectangle 19 cm long by 27.8 cm wide. 2. In triangle ABC, angle A = 47°, and angle B = 8°. Find angle C. 3. Find the perimeter of a triangle with sides of length 28 cm, 47 cm and 19 cm. 4. In triangle FGH, angle
asked by shirley 
Math  Arithmetic
Qn: Given that 3, b, c and 18 are an Arithmetic Progression. Find the value of b and c.
asked by Student55 
sociology
The general trend of American's attitudes toward the unmarried has been from an attitude of _____ in the 1950s to an attitude of ______ in the 2000s A.) Nonacceptance; acceptance B.) Neutrality; nonacceptance C.) Nonacceptance; neutrality D.)
asked by ashley 
French  Help :(
Hi all. I'm trying to write a paragraph in french. These are my instructions: Décrivez vos activités habituelles pendant les vacances dernières en utilisant au moins sex verbes réfléchis à l'imparfait. This is what I want to say: Last winter, I did
asked by K 
math
a rectangle has length which is twice the width. if the diagonal is the 5 times the square root of 5 meters long, find the perimeter of the rectangle.
asked by ed 
computer science
Opera Mobile is an example of: a smartphone. a wireless ISP. SmartMedia. a microbrowser.
asked by Anne 
Physics
In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why.
asked by Andrea 
calculus
Find the volume of the solid whose base is the region bounded between the curve y=sec x and the xaxis from x=pi/4 to x=pi/3 and whose cross sections taken perpendicular to the xaxis are squares.
asked by Mark 
English
When is Diego's school's anniversary? 1. It will be next month. 2. It is next month. (Which answer is correct? Are both correct? Which one is commonly used?)
asked by rfvv 
French
I think that you are hiding something in your stomachs. Je pense que vous cachiez quelque chose dans tes estomacs. ^did I use the subjunctive correctly?
asked by Eleanor 
trigonometry repost .
This is an outline that i have to use to find the solution of the question. It involves logarithms and halfangle formulas.I have worked though it but got stuck on some parts. I'd like if you look over my work. solve the triangle for which given parts are
asked by Anon 
physics
Surprisingly, very few athletes can jump more than 2.0 ft (0.62 m) straight up. Use d = 1/2 gt2 and solve for the time one spends moving upward in a 2.0 foot vertical jump. Then double it for the "hangtime"  the time one's feet are off the ground.
asked by claire 
geography
Can you check my answer. What is the capital of the nation that is located at the southern tip of Africa? My answer is Tshwane(Pretoria) Is this correct?
asked by Reed 
chemistry
100ml solution made up 1.0M NH3 and (NH4)2SO4 have been added with 100ml of 0.1 HCl. how many moles are present in the solution before and after? given the pH of the solution is 9.26
asked by gwen 
maths
x^27x = 0 substitue x=7 into the equatiopn and explain why this shows that x=7 is the solution. ok so i do this: if x=7 then the equation becomes 7^249=0 7^2=49 4949=0 so x=7 is correct (is that explanation enough?) now i have to write out a complete
asked by Marian 
math
Tom wrote a twodigit number.He multiplied it by 3, added 18, and divided by 8. His final answer was 9. What number did Tom write?
asked by Anonymous 
German
which preposition is most suitable 1)Mraias Zimmer ist______ Dritten Stock 2)Die Wohnung ist_____einem Hochhaus  a)Im Kleiderschrank _____meine Kleider(HANGS)
asked by vera 
Math
Solve: 3x2(3x1)+4(x+1)=0
asked by Rivan 
physics
give me an acrostic name of ma.lani aguirre
asked by charlene 
science
what is the formula for calcium and oxygen
asked by isaiah 
grammar
'I might' a thought of that closet. Correct this sentence
asked by larsong 
chem
When varsol and iodine in potassium iodide aqueous solution is mixed, two phases form. What are the colours in each of the 2 phases when 2ml of I2/KI aqueous solution plus 2 ml of varsol are mixed in a test tube? What are the colours in each of the 2
asked by crystal 
radiant readers book
correct the following sentences 1) what you been doing there? 2) but old fools is the biggest fools there is. 3)i ain't doing my duty by that boy 4)it's mighty hard to make him work saturdays,when all the boys is having holiday. 5)'Tom, it was warm in
asked by larsong 
bio
what are the two structural components of a chromosome
asked by mary 
Inter algebra
help, I am stuck on this one. ã(7c)^2
asked by Jackster 
math
the function has a real zero in the given interval. approximate this solution correct to two decimal places. f(x)=x^4x^37x^2+5x+10; (2,3)
asked by fast80us 
chemistry
Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)Ag^+(aq)Sn^4+(aq), Sn^2+(aq)Pt(s) b) Al(s)Al^3+(aq)Cu^2+(aq)Cu(s) c) Pt(s)Fe^2+(aq), Fe^3+(aq)MnO4^(aq),Mn^2+(aq)Pt(s)
asked by Jazmin 
Biology
The trachea is ___________ to the lungs Toes are _______________to the shoulders Esophagus is _____________ to trachea Pinna is ______________ to tail Liver is ______________ to stomach Options are Anterior, Posterior, dorsal, ventral, lateral, median,
asked by Jude 
math, Please Helppp!!!!!!!! Lost paper!
I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is the "did you hear about the farmer who fed his cows birdseed.." page) What are the math problems for it?!?
asked by Caroline 
precalculus
please help me with thisone thanks solve the inequality algebraically. Express the solution in interval notation. (x8)^2/x^236 > 0
asked by dave 
math
There are nine equally likely outcomes if you spin this spinner twice (x,y,z) 1) Three of the 9 equally likely outcomes are xx,yy and zz. List the other six outcomes. 2) If you spin the spinner three times, what is the probability of getting yyy? Explain
asked by stacy 
Physics
An ideal transformer is needed to step the voltage down from 400V to 115V. The primary has 400 turns. How many turns would be necessary on the secondary side?
asked by Crystal 
SraJMcGin
Thanks a lot for your previous help with my assignments, and I have Windows. I don't know how to make accent marks:\
asked by Selena 
Chemistry
If you react 55g of hydrazine and 55g of oxygen gas, what is the maximum moles of nitrogen dioxide gas that can be made and what is the limiting reagent?
asked by Melanie 
Math
Confused on permutation or combination on this question: A VISA credit card has a first digit of 4 followed by 15 other digits. How many different VISA accounts does this allow? I know the formulas but I am having a hard time determining which one to use.
asked by marco 
physics
How much exertion in pounds does it take a woman who weighs 115 pounds to push a cart that weighs 50 pounds?
asked by Mike 
SpanishPlease check my answers
¿Cuenta en español? Si, yo cuento en español. ¿Puedes contar en francés? No, no puedo contar en francés.
asked by Shiela 
math
what is dimensions of an acre? and size of football field?
asked by Kaleb 
science
when a liquid wax is turned into a solid is it a chemical reaction?
asked by Anonymous 
chem
under what condition would all three hydrogen be removed the H3PO4?
asked by Anonymous 
physicssssss
In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a
asked by hy 
physiC
A uniform door (0.81 m wide and 2.1 m high) weighs 150 N and is hung on two hinges that fasten the long left side of the door to a vertical wall. The hinges are 1.9 m apart. Assume that the lower hinge bears all the weight of the door. Determine the
asked by lina 
GERMAN
Are the wechsel articles always dativ?  1)Die Zigaretten liegen ____ Boden(ON THE) 2)Mein Hemd steht____Bett(near the) 3)Sein Fahrrad ist____Fenster 4)Onkel liegt ______Sofa(on the) 
asked by vera 
math163
for the polynomial, list each real zero and its multiplicity. determine whether the graph crosses or touches the xaxis at each xintercept. f(x)=1/2x^4(x^25)(x+1)
asked by albert 
Chemistry
HELP! I need to know if I am getting the right equation for the oxidation reaction of cyclohexene and potassium permanganate? I think it would be: C6H10+KMNO4 would become C6H10(OH) + MNO2 + K
asked by Lizzy 
statistics
there are 80 students in a math class.20% of the students in the class scored above 50 marks in the test. what is the average of those students who scored below 50 marks
asked by chisom 
Algebra
Explain the advantages of the vertical and horizontal methods of multiplying a binomial and a trinomial.
asked by Marlayne 
math163
Please i need all the process.. thank you.. for the polynomial, list each real zero and its multiplicity. determine whether the graph crosses or touches the xaxis at each xintercept. f(x)=1/2x^4(x^25)(x+1)
asked by albert 
Algebra
Can you write a binomial in standard form with a degree of 0? Can you write a binomial with a degree of 3? Explain.
asked by Patrick 
physics
formulation of hypothesis for the prepation of a standard solution of oxalic acid with a concentration of 0.05mol.dm3. very desperate
asked by anonymous 
cambo
180 ft long board is cut into 3 pieces. The second piece of board is twice as long as the first. The third piece of board is six times as long as the first. What is the length of the first piece of the board?
asked by bob 
IT WEB SYSTEMS
Provide a reallife application in which you manipulate data in string or array format. Describe the situation, manipulation process, and data result.
asked by SURFERDF 
IT/210
Design a program that models the worms behavior in the following scenario: A worm is moving toward an apple. Each time it moves, the worm cuts the distance between itself and the apple by its own body length until the worm is close enough to enter the
asked by Kamari Davis 
physics
if A=2, B =4, C =5, find the vector sum a+b+c in ordered pair notation, also find the angle theta
asked by vicki 
physics
if A=2, B =4, C =5, find the vector sum a+b+c in ordered pair notation, also find the angle theta
asked by vicki 
IT/210
Assignment: Currency Conversion Design · Complete the hierarchy chart in Appendix H and the flowcharts in Appendix I, based on the Currency Conversion requirements and InputProcessOutput table you generated in Week Two. · Develop the pseudocode for the
asked by Kamari Davis 
physics
A merrygoround is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of 0.705 rad/s. The dog does not change his pace when he sees what he has been looking for: a bone resting on the
asked by Anonymous 
algebra
Find the functional values f(2), f(0), and f(1) for the function. ƒ(x) = X² 1
asked by bianca 
physics
A merrygoround starts from rest and accelerates uniformly over 29.0 s to a final angular velocity of 5.35 rev/min. (a) Find the maximum linear speed of a person sitting on the merrygoround 4.50 m from the center. (b) Find the person's maximum radial
asked by Anonymous 
Physics
The force on an object is described as a function of time equation: F(t) = 3t^2+7t What is the impulse delievered by the force over a period of time from 0 to 5.0s? What is the average force exerted on an object over this time period? If the object has a
asked by melissa 
Algebra
I am stuck in exponential growth and decay. Here is an example. Can someone tell me how to do this stepbystep please? Here it is... The population of Mexico has been increasing at an annual rate of 1.7%. If the population of Mexico was 100,350,000 in the
asked by Miss Trouble :) 
physics
A baseball mass of 150.0g, is thrown by the pitcher toward the home plate with a velocity of 45.0 m/s. it is hit back at the pitcher with a velocity of 60.0 m/s, what is the average force on the bat, if the ball and bat are in contat for a time of 100.0
asked by candice 
algebra
Find the functional values f(2), f(0), and f(1) for the function. ƒ(x) = x²  1
asked by bianca, pleeease help i'm lost 
math 117
multiply and simplify 10b^6/3r^2 x 9r^7/100b
asked by Jessicaa 
math
Two planes depart from the same airport at the same time. One hour later one of the planes is 480 miles due north of the airport and the other plane is 550 miles due east of the airport. At that time, what is the distance between the two planes?
asked by Lo 
math
Chris eats 3 slices of a pizza that is cut into 8 equal slices. What percentage of the pizza does he eat?
asked by jackie 
Statistics
The probability that a football game will go into overtime is 20%. What is the probability that two of three football games will go to into overtime? A) 0.384 B) 0.2 C) 0.04 D) 0.096
asked by Stephanie 
Statistics
The probability that a house in an urban area will develop a leak is 5%. If 82 houses are randomly selected, what is the probability that none of the houses will develop a leak? A) 0.050 B) 0.001 C) 0.000 D) 0.015
asked by megan 
Spanish7th gradePlease check my answers
Could someone check these please?I had place a possessive adjective in place of el 1. El hermano de Juan y Pedro se llama Bret Answer: Su hermano se llama Bret 2.Replace los with possessive Los hermanos de Paco y Linda se llama Santiago y Jose Answer: Sus
asked by Melinda 
science
After 0.6523 g of CoCl_{2} \cdot 6H_{2}O is heated, the residue has a mass of 0.3423 g. Calculate the % H2O in the hydrate.
asked by Anonymous 
Business 475
The general term for market structures that fall somewhere inbetween monopoly and perfect competition is?
asked by Anonymous 
Physics
Please help! suppose you have some 20 degrees celsius water and some boiling water. How much of each would you use to make 4 kilograms of water at 45 degrees celsuis?
asked by Amanda 
calculus
Please help with this. I submitted it below but no one responded. I need the first derivative of f(x)=4(x+ then the square root to include (x(8x)), then close bracket.And then the second derivative of this to show by the second derivative test that it is
asked by Frank 
mth
PLEASE I NEED HELPPPPP.. i have many exercises like that, just want to know where to start thanks. f(x)= x^3+2x^2x2 / x^2+x6 find: 1. domain 2. symmetry or not 3. determine if f(x)is: a)in lowest trem b)proper/improper 4. xintercepts, yintercepts 5.
asked by leticia 
math
The opposite angles of a parallelogram are congruent. The adjacent angles are supplementary. If angle X measures 110 degrees, then what are the measures of angle Y and angle Z?
asked by Ian 
Chemistry
80.0 grams of KBr is mixed with sufficient water to prepare 1865 mL of solution. This solution is then mixed with 46.3 mL of 0.425 M KCl solution. 12 mL of this mixture is subsequently added to 61.0 mL of distilled water. Calculate the molarity of K+ ions
asked by Christian 
Physics
A bullet of mass 3.2 g strikes a ballistic pendulum of mass 3.6 kg. The center of mass of the pendulum rises a vertical distance of 13 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed.
asked by RD 
math
11/24 admission for top selling movies, which had admission of 205 millions
asked by Anonymous 
rounding fractions
Round 10 2/3 to the nearest whole number?
asked by mia 
advocacy and mediation
what are the 10 most critical issues challenging human services agencies today?
asked by nita 
geometry
what is the angle of inclination for 7x + 3y = 9?
asked by leina 
economics today
Suppose the economy has been experiencing zero inflation and five percent unemployment for several years. The government decides to lower the unemployment percentage by generating some inflation. You need to do the following:
asked by Anonymous 
physics
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3740kg space tug and a 6500kg asteroid. They pull on the asteroid with a force of 470 N. Initially the tug and the asteroid are at rest, 480 m apart. How
asked by lizz 
math
find the length width and area of an object where the perimeter is fixed at 20 meters
asked by tahj 
chemistry
You have a 12.01 g sample of carbon. The average mass of a carbon atoms is 1.994 x 1023 g. How many carbon atoms are in the sample?
asked by Sam 
PreAlgebra: HELP PLEASE
I'm really bad at these, can someone help me PLEASE? 1. Name the property shown by the statement: 9x + 0 = 9x a. Commutative Property of Addition b. Commutative Property of Multiplication c. Identity Property of Addition d. Identity Property of
asked by Cheryl 
Physics
conical pendulum is formed by attaching a 0.200 ball to a 1.00 long. It has a radius of 40.0cm . What is the tension in the string?
asked by DAn 
Physics
conical pendulum is formed by attaching a 0.200 ball to a 1.00 long. It has a radius of 40.0cm . What is the tension in the string?
asked by DAn 
cal
Let f(x)=5e^(x+1)+e^8 . find f'(0)
asked by KOng 
cal
The circumference of a sphere was measured to be 86.000 cm with a possible error of 0.5 cm. Use linear approximation to estimate the maximum error in the calculated surface area and Estimate the relative error in the calculated surface area.
asked by KOng 
psychology
If you had to argue that either genetics (nature) or environment (nurture) has the greater impact on human development, which would you pick and why?
asked by Rica 
hardware
Hi i'm just stuck on this question. can please someone help me. Three cortrect ones are: A) A 9bit word represents twice as many code words as an 8bit word. B) mp4, mpg and bmp are all examples of video file extensions. C) A data rate of 4 gigabits per
asked by Sue 
chemistry
A sample containing .187 g cl is dissolved in 50.0 mL water. How many moles of cl ion are in the solution? what is the molarity of the cl ion in the solution?
asked by kristen 
software
Compton, R. 2010 SOA explained Retail Management vol. 14 no. 6, June pp. 29–32 which one is correct: A Fully correct B Incorrect because one start tag missing C Incorrect because one closing tag missing D Incorrect becausea/ missing inaclosing tag E
asked by Sue 
chemistry
A solution is prepared by dissolving 25.0 g of ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.0 mL sample of this stock solution is added to50.0 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the
asked by Anonymous 
math
PLEASE I NEED HELPPPPP.. i have many exercises like that, just want to know where to start thanks. f(x)= x^3+2x^2x2 / x^2+x6 find: 1. domain 2. symmetry or not 3. determine if f(x)is: a)in lowest trem b)proper/improper 4. xintercepts, yintercepts 5.
asked by leticia 
PreAlgebra:HELPPP
Factor: y^33y the ^ is an exponent is the answer y(y^23)
asked by Cheryl 
calculus
PLEASE HELP! Transform polar equation to an equation in Cartesian (rectangular) coordinates. Then identify where it locate on the graph. r sin θ = 4
asked by Ann 
calculus
PLEASE HELP! Transform polar equation to an equation in Cartesian (rectangular) coordinates. Then identify where it locate on the graph. r sin θ = 4
asked by Ann 
Psychics
Bradley, working in his 23 C kitchen, is cooking himself a crepe in an iron skillet that has a circular bottom with a diameter of .30 m. How hot must the skillet be in order for Bradley to make a 710.3 m^2 crepe that just fills the bottom of the pan?
asked by Kendra 
algebra/trig
solve: ln12x = 6
asked by carolyn 
physical science
a 180 lb person climbs a ladder to a point which is two times the radius of the earth high. how much does he weigh there?
asked by tam 
physics
a pitcher throws a 0.50kg ball of clay at a block of wood. the clay sticks to the wood on impact, and their joint velocity afterworks in 3.0m/s. what is the original speed of the clay
asked by Anonymous 
physical science
At the bottom of a well one quarter of radius of the earth deep your weight compare to your normal weight would be
asked by tam 
statistics
A physical fitness association is including the mile run in its secondaryschool fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 440 seconds and a standard deviation of 60 seconds.
asked by jackie 
english
In the sentence: Then within two years, King Uther fell sick of a great malady. The word within is a/an: A. verb B. preposition C. pronoun D. adverb I'm stuck between B and D. help? Thanks!
asked by anthony 
Organic Chemistry
what is the major product if 2,3,3trimethylpentane was mixed with IBr?
asked by Paige 
math
how do i rename mixed nimber in simplest form.15/8
asked by maria 
physics
A 23.0 kg box is released on a 39.0° incline and accelerates down the incline at 0.268 m/s2. Find the friction force impeding its motion.
asked by md8 
math
how do I solve (.5x?)1.4=.85
asked by Jo 
Math
Subtract $259.60 from $300 can you work it out for me, im having a hard time.
asked by DestinyLashea 
Physics
A closed organ pipe 0.8 m long has a diameter of 7.0 cm. The air in the church is 15oC. What is the fundamental frequency? If the heat is turned up to 20oC, what is the new fundamental frequency?  HELPHELPHELP
asked by Kai 
physics
Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 15.5 m/s toward the east and the other is traveling north with speed v2i. Neither driver sees the other. The vehicles collide in the intersection and stick
asked by Anonymous 
physics
Two charges are separated until they are a distance of 191 cm apart, causing the electric force between them to increase by a factor of exactly 5. What was their initial separation distance?
asked by anonymous 
chemistry
How much heat is required to convert 0.4 kilograms of ice at 0 degrees celsius to water at the same temperature?
asked by Anonymous 
College Algebra
f (x) =  X3 +112  8x+7 find f(2)
asked by RAM 
Science
A new organism is found that is multicellular, does not have a backbone, and has six legs. How would you classify this organism?
asked by Anonymous 
chemistry
50ml of water at 46.9 C were mixed with 50ml of water at 25.1 C in a calorimeter also at 25.1 C. The final temperature was 30.1 C Assuming that neither the density of water nor its specific heat capacity change with temperature, calculate the total heat
asked by venus 
chem help urgent!
i only have one submission for these and i dont' really know how to tell which one has the higher boiling point. can you help? Of each pair of solids, which one has the higher melting point? Kr(s) or Cu(s) and.. CCl4(s) or SiCl4(s)
asked by Rebekah 
Calc
"Let f(x,y)=2(x^2)y(y^3)+x4. a) Find the local linearization of f at (3,1) b) Compute the directional derivative of f at (3,1) in the direction towards the point (2,3). At (3,1), is the function f increasing or decreasing in the direction towards the
asked by Brittany 
physics
The table shows the power ratings of four electrical appliances. Fan heater 2 kW Oven 3 kW Kettle 2 kW Microwave oven 0.75 kW The kettle is used for a total of 30 minutes a day. It has an efficiency of 0.9 What is the cost of the energy wasted by the
asked by Aaron 
science
the specific heat of sliver is 0.235j /g.c. how much heat is neeeded to raise the tempreature of an 8 gram sliver ring be 50 degrees celecius
asked by nikita 
science
tori wants to increase the tempreature of 500 grams of water from 20 degrees celcius to 100 degrees celecius if the specific heat of water is 4.18j/g. degrees celcius how much heat is needed ?
asked by nikita 
science
gold has a specific heat of 0.130j/g. degrees celcuis if 195 joules of heat are added to 15 grans of gold homw much does the tempreature of the gold change
asked by nikita 
science
a plastic container witha mass of 30 grams gains 1,140 joules of heat if the tempreature of the container increases 20 degrees celcius what is the specific heat of the plastic in the container
asked by nikita 
science
a sliver coin and a gold coin each have a mass of exactly 6.6 grams the specific heat of sliver is 0.235j/g.degrees celcius and the specific heat of gold his 0.130j/g. degrees celcius what coin requires more heat to raise its tempreature by 40 degrees
asked by nikita 
physics
a karate chop delivers a force of 3000 N to a aboard that breaks. the force that the baord exerts on the hand during this event is A. Less than 300N B. 3000 N c. Greater than 3000N d. need more info
asked by Anonymous 
Statistics
A typist at a constant speed of 65 words per minute makes a mistake in any particular word with probability 0.06, independently from word to word. Each incorrect word must be corrected, a task which takes 14 seconds per word. Find the mean of the time (in
asked by Jon 
Physics II
Jose, whose mass is 75 kg, has just completed his first bungee jump and is now bouncing up and down at the end of the cord. His oscillations have an initial amplitude of 11.0 m and a period of 4.0 s. From what height above the lowest point did Jose jump?
asked by Colin 
statistics
A simple random sample of size n = 300 is obtained from a population whose size is and whose population size is n=20,000 ans whose proportion with a specified characteristic is p=0.8. Describe the sampling distribution of P^. A) Approximately normal; ìp =
asked by jackie 
chemistry
What do you expect when you mix 1M Na2SO4 with 1M CaCl2?
asked by jenny 
algebra
Find the functional values f(2), f(0), and f(1) for the function. ƒ(x) = x²  1
asked by bianca, pleeease help i'm lost 
Physics
conical pendulum is formed by attaching a 0.200 ball to a 1.00 long. It has a radius of 40.0cm . What is the tension in the string?
asked by DAn 
MATH probability
A pair of dice is cast. What is the probability that the sum of the two number landing uppermost is less than 5, if it is known that the sum of the numbers falling uppermost is less than 7?
asked by Anonymous 
Calc
"Consider the surface given by 4x^2y^2+5z^210z=55. a) Find all points on the surface at which the tangent plane is parallel to the plane 8x+y+15z=1. b) Pick one of these points and give the equation of the tangent plane to the surface at that point."
asked by Anonymous 
question
A temperature of 41 degrees F is equivalent to 278.2 degrees K, while a temperature of 86 degrees F is equivalent to 303.2 degrees K. Find the equation converting Kelvin temperature to Fahrenheit. What is the Fahrenheit temperature when it is 180 degrees
asked by bianca 
Medical Office Asst
On the ADA for Keith Konklin, the number 3332589 should be placed in block A( #7 B) # 18 C0 # 19 D) #31
asked by rachel 
business
when a disaster hit an area, the costof everything, food, water, housing, gas, and so forth, seems to go up immediately. Explain why this phenomenon say be a good thing using the laws of supply and demand?
asked by denise 
Trig
Use Trig identities to verify that sec^4(x)tan^4(x)=1+2tan^2(x), Only work with one side of the equation
asked by Anonymus 
chemistry
____ 14. Adding a charged particle common to two solutes decreases solute concentration. This observation demonstrates a. the commonion effect. c. hydrolysis. b. Le Châtelier's principle. d. buffering.
asked by alex 
Science
How does the movement of electrons and protons create large amounts of energy in oxidative phosphorylation?
asked by EL 
Science
how do oxidationreduction and phosphorylation reactions drive the glycolytic pathway?
asked by EL 
SOC 120
Hello I am looking for some help on some examples of Deviant human behaviors that are in one society but not considered in another society? I am stuck? Any suggestions you might recommend?
asked by Nikol 
Chemistry
A cubic piece of metal measures 7.50 cm on each edge. If the metal is nickel, whose density is 8.90g/cm^3, what is the mass of the cube?
asked by Kelsey 
chemistry
A 1.04L sample of gas at 759 mm Hg pressure is expanded until its volume is 2.24L. what is the pressure in the expanded gas sample (at constant temp.)
asked by naseeb 
history.
Who dominated the South's politics?
asked by nicole 
physics
A door starts from rest and swings with an angular acceleration, alpha, α = 6 rad/s2, where t is in seconds. Determine the angle in radians through which the door turns in the first 3 s. Hint: kinematics equation for angular position (i.e., angle) is
asked by Anonymous 
Physics
conical pendulum is formed by attaching a 0.200 ball to a 1.00 long. It has a radius of 40.0cm . What is the angular velocity of the ball if the tension in the string is 2.14N?
asked by Dan 
Microbilogy
Albert Kluyver "From elephant to...bacteriait is all the same!" What did he mean?
asked by Stephanie 
Microbiology
The ability of farmers around the world to produce crops such as corn, wheat, and rice is often limited by the lack of nitrogenbased fertilizer. How might scientists use Beijerinck's discovery to increase world supplies of grain?
asked by Linda 
Physics
A 1550 kg automobile has a wheel base (the distance between the axles) of 3.00 m. The center of mass of the automobile is on the center line at a point 1.10 m behind the front axle. Find the force exerted by the ground on each wheel. force on each rear
asked by Skye 
Math
Anita says the plus sign + forms 2 pairs of vetical angles. Charles says it forms 2 pairs of congruent angles? Who is correct, and why? Wouldn't it be both, because there are 2 pairs of opposite angles with the same measure, and 4 congruent angles.
asked by Annabel 
calculus
Determine the values of a and b for the function f (x) = ax^3 + bx^2 + 3x  2 given that f (2) = 10 and f ′(1) = 14. Please help, Thanks!
asked by ben 
english
why are string puppets harder to make &use than finger puppets?
asked by esha 
geometry
triangles ABC and XYZ are congruent. Angle A is one half the size of angle B. Angle Y is 90 degrees. Angle C and angle Z are both 45 degrees. what is the measure of angle A.
asked by Nana 
English
How Did Patria Mirabal foreshadow in the book " In the time of a butterflies" ?
asked by Fred 
finance
Anne is planning to attend college when she graduates from high school in 7 years from now. She anticipates that she will need $10,000 at the beginning of each college year to pay for tuition and fees, and have some spending money. Anne has made an
asked by sue 
Eminent Domain
how does the third amendment affect eminent domain
asked by ashley  HELP PLEASEE!!! 
math
would a banana way a gram or a kilogram?
asked by olivia 
Algebra 1
using the vertical motion model h=16t + vt + s You and a frine are playing basketball. you can jump with an initial velocity of 12 feet per secon. You need to jump 2.2 feet to dunk a basketball. your friend can jump with an initial velocity of 14 feet per
asked by Florence 
Calculus
1. Use cylindrical shells to compute the volume of the solid formed by revolving the region bounded by y= 2x and y = x^2 3 about x= 6. 2. Find the volume of the solid formed by revolving the region bounded by y= e^x , y= e^x, and y= 3 about y= 5.
asked by Mia 
sociology
The general trend of American's attitudes toward the unmarried has been from an attitude of _____ in the 1950s to an attitude of ______ in the 2000s A.) Nonacceptance; acceptance B.) Neutrality; nonacceptance C.) Nonacceptance; neutrality D.)
asked by ashley 
calculus
Determine the equations of two lines that pass through the point (1, 5) and are tangent to the graph of y = x^2  2.
asked by gt 
chemistry
459 torr is how much in atm, pascals, and mm Hg?
asked by naseeb 
chemistry
Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)Ag^+(aq)Sn^4+(aq), Sn^2+(aq)Pt(s) b) Al(s)Al^3+(aq)Cu^2+(aq)Cu(s) c) Pt(s)Fe^2+(aq), Fe^3+(aq)MnO4^(aq),Mn^2+(aq)Pt(s)
asked by Jazmin 
science
what is the human life cycle
asked by jane 
COM / 220
I need help with the DQ 2 week 2. Could someone help me please?
asked by Ashley 
Math
For the sequence, describe the pattern, write the next term, and write a rule for the nth term. 2/3,4/4,6/5,8/6,...
asked by Pedro 
college math
Find the distance of the shotcut and the distance of the long way for two locations. find the number of seconds saved ( 2.1 and 5.8) Approximate the are of the affected region (24 and 248 Sq Ft). find the average amount of oxgen saved per second saved
asked by JC 
mathematics
write a rule for nth term: 1/10, 3/20, 5/30, 7/40,.... i think the next term is 9/50 but i don't know how i got that
asked by Amanda 
MathHELP PLEASE
Anita says that the plus sign + forms 2 pairs of verticle angles. Charles says it forms two pairs of congruent angles. Who is correct?
asked by Catherine 
Math
Barbara is playing a game. She jumps forward 5 feet, and then steps backward 2 feet. How many jumps will it take her to reach the finish line, which is 20 feet from where she started? Make a table to show Barbara's position. Barbara will reach 20 feet on
asked by Haley 
chemistry
Determine how many milliliters of 0.102M NaOH solution is needed to neutralize 35.0mL of 0.125M H2 SO4 solution.
asked by jane 
Chemistry
What is the molality of a 0.065M solution of ethyl alcohol in water at 25 degrees Celcius? (Assume the density of the solution at such low conentration is equal to that of water at 25 degrees Celcius, 0.997 g./mL)
asked by Shai 
physics
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 1.65 m and cross the bar with a
asked by Matt 
Algebra 1
a recent 12 year period,, the total government payroll in the US can be modeled by P= 26t^2 + 1629t + 19,958, where P is the payroll in million of dollars and t is the number of years since the beginning of the 12 year period 1) Use the discrimnant to show
asked by Lizzie 
Biology
Name the intermediates of the Calvin cycle... I am thinking it is 1) Carbon fixation 2) Reduction 3) Regeneration But I believe it is wrong because they are stages... :S help anybody?
asked by Joey 
GeometryPlease check
I have two questions If a parallelogram is a rhombus, then the diagonals are congruent I don't think sothey can bisect each other and are perpendicular, correct but not congruent Secondly, A kite is a quadrilateral that has exactly 2 pairs of consecutive
asked by Mellie 
Math
a Frog is at the bottom of a 21 foot well. The frog jumps up 4 feet, and then falls back 2 feet. How many jumps will it take for the frong to jump out of the well?
asked by Haley 
reading
what are some examples of everyday kid ritual?
asked by frank 
Biology PLEASE HELP ME ):
how does the salinity of a solution affect osmosis in an onion cell?
asked by Kasey 
Math
a company charges Mae $625 to maintain 1000 square feet of lawn. the company restores Walters 800 square foot lawn at the same rate. How much does Walter have to pay?
asked by Ilovemath 
health
Define incidence rate and incidence proportion. Identify the differences
asked by maryjane 
science
One direction of movement of buildings from earthquake vibrations is? Hint...its a 9 letter word
asked by linda 
Precalc Please Help
1 + tan^2 (5)  csc^2 (85) = ? Would this equal 0 could someone explain this to me and the correct answer?
asked by Amy 
physics
a) What is the minimum work needed to push a 900 kg car 410 m up a 17.5° incline with zero friction? If i know this answer is 1.08e6 what equation should i use for the next part because the one i used was wrong (b) What is the minimum work needed if the
asked by bill lin 
math
determine limit √3, √(3√3), √(3√(3√3))
asked by Anonymous 
medical billing
which health nsuane program is designed to complement the retiremet survivor and disabiity insurance enacted under title 11 of the social security act
asked by jan 
math
Ashley can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?
asked by morgan 
psychology
I need an example of how one domain of development impacts the other two.
asked by leanne 
high school chem 1
2Fe(OH)3 + 3H2SO4 > Fe2(SO4) + 6H2) How many molecules of H2O can be produced from 350 liters of NH3?
asked by tyler 
English
where can i find help about direct and indirect objects
asked by Ray 
Preclaculus Help Another
cot(40)  ((sin(50))/(sin(40)) = ? I thought the answer might be 0, but I'm not quite sure. please provide steps, too.
asked by Amy 
High school chem 1
4NH3(g) + 5O2(g) > 4NO(g) + 6H20(g) what mass of H2O can be produced from 350 liters of NH3?
asked by tyler 
math
Find the rule for the sequence: 4.2, 2.6, 1, .06, 2.2
asked by sam 
Science
Suppose the partial pressure of one gas in a mixture decreases by 5 kPa. How does this change affect the total prelssure of the mixture?
asked by A. Hickman 
math
Find the rule for 9,16.8, 24.6, 32.4
asked by Lola 
Stoichiometry
How man liters of hydrogen should have been collected by reacting .045 grams of magnesium?
asked by Sonia 
Math
24x  10 = 18x  4. Please I need operations for this equation
asked by Daniel 
High School chem 1
2Fe(OH)3 + 3H2SO4 > Fe2(SO4)3 + 6H2) Question: How many molecules of H2O can be made from 9.21 x 10^22 molecules of H2SO4?
asked by tyler 
physics
A 77 g arrow is fired from a bow whose string exerts an average force of 95 N on the arrow over a distance of 81 cm. What is the speed of the arrow as it leaves the bow?
asked by Anup 
geometry
A wheelchair ramp has a rise from the ground of 1 foot. The ramp has a length of 14 feet. To the nearest degree, find the angle the ramp makes with the sidewalk.
asked by Keegan 
math
if 65% of students are wearing t shirts and 48% are wearing jeans is this possible? Please explain.
asked by linda 
math
can 25% of something be greater than 50% of something else? Please explain.
asked by linda 
chemistry
A reaction mixture is in a 5.4 L flask at 25 oC initially contains only 7.64 grams of acetic acid. (CH3COOH). Set up your I.C.E. table and use it to answer the following questions. HINT: You will need to look up the Ka for this equilibrium reaction.
asked by juan 
chemistry
a tank contains 2.6 mol of nitrogen and 1.3 mol of oxygen. If 0.65 mol of oxygen were added to the tank, what effect would this have on the pressure in the tank?
asked by Anonymous 
Math
I have no idea how to do this problem: Select the expression below that is equal to 4(9m). A. 4m36 B. 13m C. 36m D. 364m
asked by Sammy 
physics
If a 9800kg train car traveling at 15m/s impacts another train car at rest and after the impact the 2 are going 6m/s. What is the mass of the second train car?
asked by Mark 
math
Write a rule for thenth term for the following sequence: 2/3, 4/4, 6/5, 8/6, ... I know the next term is 10/7 but I don't know how I got it
asked by sam 
Math
12  9 = 15d + 9? please help with operations
asked by Stuart 
algebra
a truck has a diameter of 25 inches. a tack is stuck on the bottom of the tire. if the truck travels one mile, how many times will the tack touch the road?
asked by Anonymous 
chemistry
What volume at STP would be required to react with 0.100 mol of hydrogen to produce ammonia?
asked by Anonymous 
Algebra 2
Just checking to see if I got this right. Thanks, (3x^48x^2 3x3) / (x^23) 3x^2+1 remainder 3x
asked by Paige 
science
a 100.0 gram metal sample is heated to a temperature of 110 degrees celcius then placed into a calorimeter containing 100.0 r of pure water (at initial temperature of 23 degrees celcius). after the sample and water reach thermal equalibrium, their final
asked by jason wolthen 
geometry
what is the area of this trapezoid if the angles are 11in,9in,and 3in
asked by Jawuan 
Math
A basketball team scored 48 baskets in 1 game. Each basket was worth one or two points. If the team scored 84 points, how many one point and twopoint baskets did it score?
asked by Emily 
Math
12  9 = 15d + 9? please help with operations
asked by Stuart 
statistics
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes toward school. Scores range from 0 to 200. The mean score for college students is about 115.8, and the standard deviation is about
asked by Anonymous 
French
I'm supposed to come up with something in the imparfait that begins with "Quand j'étais petite, ... but my vocabulary is very limited so I don't really know what to write. Any suggestions?
asked by Cynthia 
Statistics
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes toward school. Scores range from 0 to 200. The mean score for college students is about 119, and the standard deviation is about
asked by Yesenia 
statistics
How heavy a load (pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Here are data from students doing a laboratory exercise: 22565 28373 25826 26468 27508 23401 24998 32436 25405 29235 29679 33661 27775 28517 30371
asked by Yesenia 
math
Hitomi has a total of 30 red and blue bowling balls at her bowling alley. Each red ball weighs 8 lb. each blue ball weighs 9 lb. If the total mass of the blue balls is 49 lb. heavier than the total mass of the red balls, how many red balls does she have???
asked by Katherine 
Science (NO WEBSITE has it)
What boundary did the Prince William Sound earthquake have? (transform, divergent, convergent.)
asked by Cheyenne 
statistics
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes toward school. Scores range from 0 to 200. The mean score for college students is about 115.8, and the standard deviation is about
asked by Yesenia 
GeometryPlease check my answers
I have two questions: If a parallelogram is a rhombus, then the diagonals are congruent I don't think so in all casesthey can bisect each other and are perpendicular, correct but not necessarily congruent so this should be false? Secondly, A kite is a
asked by Mellie 
math
a circular coin has a radius of 8.2 mm. What is its circumference ,rounded to the nearest tenth?
asked by ???? 
chem
Indicate the type of crystal (molecular, metallic, covalentnetwork, or ionic) each of the following would form upon solidification. 1. B
asked by Rebekah 
Physics
An object moves from the position (1,3,5) to position (1,4,8) during time 8 s. what is the average velocity?
asked by Jasalle 
math
You are playing a card game with a deck of 52 cards.You win if you draw a red card that is a multiple of 5.What are your chances of winning on your first draw?
asked by kamaria 
Physics
an object moves from the position (1,3,5) to the position (1,4,8) during time 8 s. what is the average speed?
asked by Jasalle 
Religion
What is the best definition of the Belief perspective? My book does not define it just relates Ultimate Reality existance to it. Thank you for bring a clear understanding to me.
asked by Ann 
math
Perform the indicated operation and, if possible simplify. 7/12+(3/5)
asked by Melissa 
Physics
A car is traveling a road that makes quarter of a circle with a constant speed. What is the magnitude of the average velocity of the car?
asked by Jasalle 
MATH PLEASE HELP
1 + tan^2 (5)  csc^2 (85) = ? Would this equal 0 could someone explain this to me and the correct answer?
asked by Amy 
Math algebra
A 120 foot long rope is cut into three pieces the first piece of rope is twice as long as the second piece of rope the third piece of rope is three tines as long as the second piece of rope what is the length of the longest piece of rope?
asked by Anonymous 
math
i still don't get it ms sue for 3.14 x 16.4 it will equal .376 not 51.996
asked by ???? 
Physics
Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees
asked by Amanda 
chemistry
A 6.0 L flask contains a mixture of methane, argon and helium at 45 degrees C and 1.75 am. If the mole fractions of helium and argon are 0.25 and 0.35, respectively, how many molecules of methane are present?
asked by Katie 
Physics
Please help! Suppose that a 400 gram copper object (specific heat 0.092 cal/g/degrees Celsius) receives 900 cal. of heat. What is the temperature change? Explain your reasoning. Do not use algebra Thanks!
asked by A 
math
given an 8 foot by 10 foot wall how many 6 inch square tiles would be needed to cover the wall
asked by margie 
Physics
Suppose equal volumes of iron and water interact thermally. Which will change temperature more? If they are initially 30 Celsius degrees apart in temperature, how much will the temperature of each change? Explain your reasoning. Thanks!
asked by A 
math
a circular coin has radius of 8.2 what is the circumference rounded to the nearest tenth? please show work
asked by daisy 
Chemistry
What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia?
asked by HELP! 
math
a percan pie 40 ft in diameter was baked in oklahoma,in 1989. What was the pie circumference ,rounded to the nearest foot? plz shoe work
asked by daisy 
Math
why does tan(120) =  0.71312301 and not sqrt 3 ? I tried making a graph and still came up with sqrt 3??
asked by Amy 
Physics
Two stones are thrown vertically up with initial velocity Vo, second stone with a time delay To with respect to the first one. At which time after the beginning of the motion the two stones will collide? Is this scenario possible for any Vo and To? What
asked by Jasalle 
math
a circular track has a radius of 100ft. elena wants to run 2 miles. There are 5,280 ft in a mile. Can you find the circumference of a circle if you know the radius? explain your answer
asked by daisy 
high school chem 1
Equation: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) question: What volume of NH3 is needed to react with 71.6 liters of oxygen?
asked by tyler 
math
A drawer contains 7 black socks, 5 white socks, and 3 brown socks. What is the probability that 2 white socks will be removed in succession?
asked by Matt 
helppppp :)
how can we help african people who is having a hard time with poverty? :)
asked by kim 
Chem molarity
A beaker contains 100 grams of 1.20 M NaCl. If you transfer 50% of the solution to another beaker, what is the molarity of the solution remaining in the first beaker?
asked by Toni Jones 
Chemistry
What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia?
asked by i dont know how to set it up! 
Chemistry
What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia?
asked by i dont know how to set it up! 
algebra
what is an example of a function that you might encounter in everyday life and describe its domain and range.
asked by keisha 
Calculus
Find the derivative of F(z)=3+cos(2z1)
asked by Zukii 
Physics
A ship crosses a river aiming at the angle è to the left from the straight course. The speed of the ship with respect to water is v'. The width of the river is d and the water velocity is u to the right. What will be the side displacement h of the ship as
asked by Jasalle 
algebra
what is the slope of a line parallel to y=1/2x+2.3
asked by nigel 
chemistry
What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia? I need help setting it up!
asked by i dont know how to set it up! 
chemistry
What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia? I need help setting it up!
asked by i dont know how to set it up! 
chemistry
What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia? I need help setting it up!
asked by i dont know how to set it up! 
agebra
simplify 14xy / 42x^5y^8
asked by Jackster 
chemistry
A pair of students performs an experiment in which they collect 27 g CaO from the decomposition of 41 g CaCO3. Are these results reasonable? Explain your answer using percentage yield.
asked by joe 
biology
A question in Campbell's 8th edition study guide for AP Biology says: A multifactorial disorder _. Answer: has a collection of symptoms traceable to an epistatic gene. There is another answer choice which says : has both genetic and environmental causes.
asked by Jake 
Math
Earn al least $150 a week. $10 per hour working for a farmer. $5 per hour babysitting. can work at most 25 hours per week. Write and graph a system of linear inequalities.
asked by Mary 
Math
The perimeter os a tennis court is 228 feet and the lenght is 42 feet longer than the width. Write a linear system. Let w be the width of the tennis court and let l be the lenght of the tennis court. Graph the linear system.
asked by Mary 
Inter algebra
Simplify the following expression, and rewrite it in an equivalent form with positive exponents. (10x5)5
asked by Jackster 
Math: does anyone know how to solve this
1 + tan^2 (5)  csc^2 (85) = ? Would this equal 0 could someone explain this to me and the correct answer?
asked by Amy 
Chemistry
I need help classifying these as physical and chemical properties! 1. sodium metal in chlorine gas releases luster. 2. sodium metal has a metallic silver luster. 3. sodium metal in water porduces hydrogen gas. 4. sodium metal melts to a liquid at 98
asked by Emily Grossman 
English
1. The news about the hurricane is _____ in the newspaper. comparative form of clear) 2. My brother has seen this movie _____ than he has seen any other. (comparative form of often) 1.clearer 2.more often
asked by Hayley 
chem
I need help classifying these as physical or chemical changes! 1. sodium metal exposed to air turns dark gray. 2. steam in a test tube condenses to moisture. 3. baking soda in vinegar releases bubbles. 4. water dissolves in vinegar to give a solution. 5.
asked by Emily Grossman 
denominators
v/3 +v/v+5 = 4/v+5
asked by Anonymous 
Geometry
IN rhombus ABCD, measure of angle DAB equals two times the measure of angle ADC and CB equals 6. Find measure of angle ACD
asked by Anonymous 
Fractions
Maria played with her dolls for 45 minutes.this coima also be written as?
asked by Elizabeth 
Math Check
the angle with 60 degrees has a reference angle of 60 degrees?
asked by Amy 
Measurment
What is the area of this triangle with 22,16,28 And a nine in the middle?
asked by Elizabeth 
Math
Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three decimal places. 6.2 • 107 / 4.15 • 103
asked by Jackster 
science
A golf ball and a pingpong ball are dropped in a vacuum chamber. When they have fallen halfway down, they have the same?
asked by G 
Math repost
I posted this question before at 7:14 I think the answer to it is 0. cot(40)  ((sin(50))/(sin(40)) = ? these are also degrees steps too please. I thought since 50+40= 90 then that part would be 1, but then how would cot 40 turn out to be 1
asked by Amy 
Math
tan(120)= sqrt 3 OR  sqrt 3 (Helper stated that it was sqrt 3) But, I'm just confused over this part: for even vs. odd functions it saids that tan(angle) =  tan(angle) so the even vs. odd doesn't matter since tan is positive in the QIII?
asked by Amy 
algebra 2
What is the quotient: (–3x3 + 16x2 + 13x – 6) ÷ (3x – 1) ?
asked by jessica 
BUSINESS: MGT470
Your team has been hired as consultants by a company and is meeting with the executive boardPrepare a 15 to 20slide PowerPoint® presentation with detailed speaker’s notes that describes the ISO 14001 certification process. Address the following
asked by BRENDA 
math
Last year's computer model is on sale for $799. You can add more memory to the computer. Each chip of 8 megabytes of memory costs $25. How many megabytes of memory can you add if you have at most $1,000 to spend.
asked by steven 
Math
blank is a polynomial, you would write the polynomial as a product of factors?
asked by Ebony white 
math
Last year's computer model is on sale for $799. You can add more memory to the computer. Each chip of 8 megabytes of memory costs $25. How many megabytes of memory can you add if you have at most $1,000 to spend.
asked by steven 
Math
True or false, A solution of a system of linear equations is an ordered pair that satisfies one of the equations in the system?
asked by Megan Ruff 
Math
What answers this definition: A polynomial, you would write the polynomial as a product of factors.
asked by Megan Ruff 
Physics
A gunman shoots from a riffle in a horizontal direction without correcting for gravity. How much below the intended target, at a horizontal distance, will the bullet strike if its initial speed is Vo??
asked by Jasalle 
math
A computer costs $799. To add memory it costs $25 for 8 megabytes. How much memory can you add if you have at most $1,000 to spend.
asked by steven 
Math
Tennis balls withal diameter of 2.5 in. Are sold in cans of three. The can is a cylinder. What is the volume of the space in the can not occupied by tennis balls? Assume the balls touch the on the sides,top and bottom.
asked by Please Help 
precalculas
The doubling period of a baterial population is 20 minutes. At time t=100 minutes, the baterial population was 80000. What was the initial population at time t=0? Find the size of the baterial population after 4 hours.
asked by katrina 
Physics
A gunman shoots from a riffle in a horizontal direction without correcting for gravity. How much below the intended target, at a horizontal distance, will the bullet strike if its initial speed is Vo??
asked by Jasalle 
pre calc
find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the given point: 1. (8, 4) 2. (4, 4√3) 3. (0, 4) 4. (6, 2)
asked by Marcy 
precalc
Find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the given point: 1. (8, 4) 2. (4, 4√3) 3. (0, 4) 4. (6, 2)
asked by Anonymous 
pre calc
find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the given point: 1. (8, 4) 2. (4, 4√3) 3. (0, 4) 4. (6, 2)
asked by Marcy 
math
use the four digits 3 4 5 6 exactly once each to form a division problem which has a quotient of 0.08 write the appropriate division problem
asked by michael 
MATH
I'm doing a proportion fora problem. Would it be $/ft = ft/x or $/ft = x/ft
asked by Themathperson 
biology
what forms between the other two primary tissue layers
asked by Paige 
bio
You have a sample of NaCl that contains 100 mg/ml NaCl. You are trying to perform an reaction that requires 10ml of 20 mg/ml. Enter in the correct amount (in ml) of Stock NaCl solution you need to use to make 10ml of 20 mg/ml NaCl
asked by mina 
math
x/24=5
asked by megan 
math
x/44=3x/46 plz show step by step
asked by megan 
Math
I'm doing a proportion for a problem. Would it be $/ft = ft/x or $/ft= x/ft
asked by sissy 
Math
Simplify the following expression, and rewrite it in an equivalent form with positive exponents. 14xy / 42x^5y^8
asked by Jackster 
math
if a octagon has a perimeter of 88 centimeters, what is the measure of each of its sides?
asked by michell 
chem 1
Using equation: 2Fe(OH)3 + 3H2SO4 > Fe2(SO4)3 + 6H2O Question: How many molecules of H2O can be made from 9.21 x 10^22 molecules of H2SO4?
asked by tyler 
math
a jet flies with wind at 1100 km/h and against the same wind at 750 km/h.Find the rate of the wind and the speed of the jet in still air.
asked by natalia