Questions Asked on
October 8, 2013

Brief Calculus
Minimize F = x2 + y2 with x + 2y = 5 Thank you
asked by Kyle 
operating system
A database structure can be changed by?
asked by Tasha 
Algebra 1
A landscape company charges $100 plus $15 per hour. Another company charges $75 plus $17 per hour. How long is a job that costs the same no matter which company is used?
asked by Anonymous 
english
complete the sentence by writing the correct form of the word shown in parentheses. You may not need to change the form that is given. 1. Is their (dissuade) Ted from attempting that difficult dive. dissuading 2. That statement is absolutely (fallacy).
asked by kevin 
Algebra 1
A boat travels 36 miles in 60 minutes. Find the unit rate. Round you answer to the nearest thousandth if necessary.
asked by Anonymous 
Brief Calculus
Last one for today... As the financial consultant to a classic auto dealership, you estimate that the total value (in dollars) of its collection of 1959 Chevrolets and Fords is given by the formula v = 303,000 + 1,020t2 (t ¡Ý 5) where t is the number of
asked by Kyle 
Chemistry 12
Calculate the mass of K2CRO4 needed to make 3.00 L of a 0.0200 M solution.
asked by Riann 
Chemistry 12
The molar solubility of calcium sulphate CaSo4 is 8.43 x 103(10 to the power of negative 3) M. Calculate the mass of solid CaSo4 which can be evaporated from 250.0 mL of a saturated solution of CaSO4.
asked by Riann 
Chemistry 12
Calculate the volume of 12 M Na2SO3 which needs to be added to 500.0 mL of water in order to produce a solution in which [Na+]= 0.200 M.
asked by Riann 
chemistry
Im stuck on these few questions that seems to be getting me no where : Determine the number of mmoles of HCl that did not react with the anatacid. c HCl = 0.1812 c NaOH = 0.1511 volume of HCl added : 75 volume of NaOH added: 29.23,19.58,33.3  mmoles of
asked by karen 
Louisiana state history
how did Cajuns, and Creoles influence Louisiana ?
asked by victoria 
Chemistry
HCl(aq) +NaOH(aq) > NaCl +H2O In a coffee cup calorimeter 50 ml of 2.00M HCl was combined with 50ml of 2.05M NaOH. a) What is the enthalpy change for the reaction? b) What is the molar enthalpy for the reaction? Given: Change in T= 14 degrees celsius
asked by Kuu 
Computer
How do you solve this algorithm problem? Suppose that you are given a sequence of n elements to sort. The input sequence consists of n/k subsequences, each containing k elements. The elements in a given subsequence are all smaller than the elements in the
asked by Jeremy 
Maths
Given that a and b are real numbers and that x satisfies the inequality ax>=b when x>=14, what is the smallest integer x that satisfies ax>a+2b ?
asked by CHRIS 
Chemistry
10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure?
asked by Margaret 
Chemistry
10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure?
asked by Margaret 
Chemistry
10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure?
asked by Margaret 
chemistry
The band gap of indium gallium arsenide varies based on the concentration of gallium in the material. A sample of InGaAs absorbs light with a wavelength less than 1.37 microns. What is the band gap of the InGaA sample in eV
asked by heyyou 
chemistry
The band gap of indium gallium arsenide varies based on the concentration of gallium in the material. A sample of InGaAs absorbs light with a wavelength less than 1.37 microns. What is the band gap of the InGaA sample in eV
asked by heyyou 
Calculus
Find the derivative. s=t^6tan(t)sqrt t
asked by Jan 
Physics
Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle θ with the trees. (a) What is the tension at the ends of the rope where it is connected to the trees? Express your answer in terms of m,
asked by Anonymous 
U.S. Government and Politics
What were the two main compromises of the Constitutional Convention??? I think they are: the great compromise the three fifth's compromise am i right???
asked by Mary Ann 
Maths
Consider the parabola y=x^22px+p+1. If the real number p has the property a
asked by CHRIS 
Algebra
A positive integer minus a positive integer is always positive. This statement is sometimes true. For example, 17 – 5 = 12, but 15 – 20 = –5. post five other statements about the addition and subtraction of positive and negative integers, and ask
asked by Mary Ann 
physics
An archer is preparing to shoot an arrow. He grabs the center of the bowstring and pulls straight back with a force of magnitude F = 173 N. The upper and lower halves of the string form an angle α = 104∘ with respect to each other. Assume that the
asked by Anonymous 
6th grade math
Hi.. i'm a little confused on using proprtion equations to solve percent problem. can you check the following? Is there a different way to solve? equation: is(part)/of(whatnumber)= %/100 1. What is 94% of 43? x/43 = 94/100 100x = 43*94 (cross multiply)
asked by Alex 
chemistry
Im stuck on these few questions that seems to be getting me no where : c HCl = 0.1812 c NaOH = 0.1511 volume of HCl added : 75 volume of NaOH added: 29.23,19.58,33.3 Determine the number of mmoles of HCl that did not react with the anatacid.  mmoles of
asked by kathy 
U.S. Government and Politics
Can anyone help me on this question?? Describe how our Federalist system works in America. /:)
asked by Mary Ann 
Calculus
At a certain factory, output Q is related to inputs u and v by the equation Q= 17u^2+(16u+17v)/(u+v)^2 If the current levels of input are u= 10 and v = 25, use calculus to estimate the change in input v that should be made to offset a decrease of .7 unit
asked by Rebekah 
eglish
1. Is their no (dissuade)Ed from attempting that difficult dive. dissuading 2 Mr. Largen wont accept your paper unless it has adequate (substantiate)substantiatation
asked by kevin 
Health
n infection that is congenital is: A. ingested. B. present at the time of birth. C. inhaled. D. transmitted by touch. i think its a or b
asked by KIK 
Algebra
What is the xintercept of 1/2x5y=10
asked by Xaun 
Chemistry
During your experiment, you are drive water from the hydrate M x X y ⋅zH 2 O . You subsequently determine that your hydrate has four molecules of waters associated with each formula unit. However, the bottle the hydrate came from indicated a formula with
asked by Sara 
Kharkutta govt. School
Use number line to evaluate the following. (1). 5+(3) (2). 4(4)
asked by S M Gabil 
Physical science
A rock is dropped from a height of 60 m and is in free fall. What is the velocity of the rock as it reaches the ground 3.5 seconds later?
asked by dalton 
Algebra II
Help plz..!!! which is the slope of the line with equation 2x + y = 4 2 1/2 2 1/2
asked by Olive 
algebra
Im lost i don't know how to do this can someone show me step by step how to solve this For what value does c does the equation have one real root? Hint using the values of a and b found in the equation, solve D = 0 for c. Consider the quadratic expression
asked by toni 
biology
5. A researcher finds that blood alcohol levels cause progressive damage to the liver. All the mice in his study were fed the same amount and types of food. Different concentrations of alcohol were injected into each mouse. One group of mice does not
asked by hannah 
physics
Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle θ with the trees. (a) What is the tension at the ends of the rope where it is connected to the trees? Express your answer in terms of m,
asked by Karl 
Check my answer plz!!
which shows 3x+6y=12 in slopeintercept form? option a: y=1/2x2 option b: y=2x12 option c: y=1/2x12 option d: y=2x2 my answer is; a
asked by Olive 
reading
How is grandmother's dream different from reality? >Last night I dreamed of an old lover I had not seen him in forty years. When I awoke, I saw him on the street. His hair was white, his back was stooped. How could I say hello? He would have puzzled all
asked by Anon 
Finance
Consider the following income statement and answer the questions that follow: Sales(100 units) $200 Variable costs (.80each) 80 Fixed costs 20 EBIT 100 Interest expense 30 EBT 70 Income tax 24 Net income 46 a)what is the firm's Breakeven Point in units?
asked by Edward 
Math
Insert parentheses to make the equation true. 14=5042/3+4*6
asked by Philip 
Algebra 1Please, help me!
Describe the solutions of each inequality in words. 1). 2 < h + 1 2). 5  x _< 2
asked by Anonymous 
Algebra
Please help me with these alegbra problem! Factoring by grouping by + ay + bx + ax=
asked by Lisa Vice 
Algebra
Factor out the greatest common factor simply the factor if possible. 26(5x)25(5x)3
asked by Lisa Vice 
Algebra
7m + mn + 35 + 5n=
asked by Lisa Vice 
Science
What could the relative age of two rocks tell you about them? a. One rock is 10,000 years old, and the other is 8,000 years old. b. One rock is older than the other. c. They both have fossils in them. d. One rock is closer to the surface than the other.
asked by Anonymous 
Calculus
Find the derivative. s=t^6tan(t)sqrt t
asked by Jan 
CHEM 101
What volume of a 0.726 M sodium hydroxide solution is required to neutralize 24.6 mL of a 0.298 M hydrobromic acid solution ?
asked by jackson 
Statistics
Compute SEdiff Mean1=23 Mean2=18 SD1 =4 SD2 =6 N1 =9 N2 =6
asked by Sharon 
English
Could you describe to me party animal: behavior, appearance, what he likes, how he dressed. 150 words. Everything can be !
asked by Jukyor 
calcus
int cosxsinx dx
asked by Roy 
calcus
int tan^3xsec^3x dx
asked by Roy 
calcus
int sec u du
asked by Roy 
Calculus
A street light is at the top of a 17 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 6 ft/sec. How fast is the tip of her shadow moving when she is 50 ft from the base of the pole.
asked by Nathan 
preAlgebra
17x22x=1/2
asked by Susan 
PreAlgebra
m/9=m/18+4/2
asked by Susan 
Business Statistics
Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fifth, and sixth digits. Calculate the mean of the 20 samples Draw a
asked by Kim 
Physics
The density of gold is 19 times that of water. If you take a gold crown weighing 32 N and submerge it in water, how much upward force must you exert on the submerged crown to keep it from accelerating?
asked by Kelsey 
PHYSICS
Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle θ with the trees. (a) What is the tension at the ends of the rope where it is connected to the trees? Express your answer in terms of m,
asked by Anonymous 
algebra
Im lost i don't know how to do this can someone show me step by step how to solve this For what value of c does the equation have one real root? Hint using the values of a and b found in the equation, solve D = 0 for c. Consider the quadratic expression
asked by toni 
psychology
when wolfgang kohler put tempting bananas out of the reach of the chimpanzees, he found that:
asked by mike/meka harris 
algebra
help me please im confused Consider the quadratic expression X^2 + 4x + c = 0. For what range of values does the equation have two complex roots? what am i doing here can someone show me step by step so i can at least try to do the other problems i have
asked by toni 
Spanish
Lupe, Rosa y Tomás son amigos. (bueno) Is it supposed to be buen or buenos in the empty spot? I know that an adjective is supposed to be shorted before a nounbuen but how about for plural nouns?
asked by Lynne 
Algebra 1 Please, help me!
Solve 2x  3y = 9 for y. Solve 2a + ab = c for a.
asked by Anonymous 
physics
Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle θ with the trees. (a) What is the tension at the ends of the rope where it is connected to the trees? Express your answer in terms of m,
asked by Anonymous 
Science
What could the relative age of two rocks tell you about them? a. One rock is 10,000 years old, and the other is 8,000 years old. b. One rock is older than the other. c. They both have fossils in them. d. One rock is closer to the surface than the other.
asked by Anonymous 
algebra
find the root i know this answer should be 4 but how do i arrive there can someone show me how to do this please X+16/x=8
asked by jared 
maths
the solution set for the following 1.X3+x26x10=0 2.2x24x4=0 3.x4x34x2+x+1=0
asked by Laila 
Psychology
What is the independent and dependent variable in this scenario: A Physiological Psychologist is interested in investigating the effects of a new antianxiety drug on maze running behaviour in rats. A pool of rats is divided into two groups. One group of
asked by Lilley 
Psychology
Indicate the independent variable and dependent variable: A research psychologist, working in a federal prison, is asked to assess the effectiveness of a new life skills program in promoting problemsolving skills. From a pool of 70 inmate volunteers, the
asked by Darren 
algebra
how do i solve this find the root 3x^2 +21x=0 is the root 7
asked by toni 
physics
Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle θ with the trees. (a) What is the tension at the ends of the rope where it is connected to the trees? Express your answer in terms of m,
asked by Anonymous 
physics
A staging that weighs 350 N supports two painters, one 230 N and the other 440 N. The reading in the left scale is Fl = 480 N .What is the reading Fr in the right hand scale? Answer in units of N
asked by hannah 
poetry
I have done the questions, just need someone to look them over to see if they make sense and are correct. THANK YOU! Canada Day Love Match My mother stalked her future son in law, convinced he was the one for me. Through the crowd at the Forks Market, she
asked by Shannon 
chemistry
a compound contains 5.2% by mass Nitrogen. It also contains carbon, hydrogen and oxygen. Combustion of 0.085g of the compound produced 0.224g of carbon dioxide and 0.0372g of water. Calculate the empirical formula of the compound.
asked by martina 
cinquain poem
For social studies we had to make our own 4 topic of cinquain poems. I asked some people and not many knew this type of poem, but one person said it all seem good except for the last lines. Do you think I did the format corret? Thanks for your help
asked by liz 
Spanish
Lupe, Rosa y Tomás son amigos. (bueno) Is it supposed to be buen or buenos in the empty spot? I know that an adjective is supposed to be shorted before a nounbuen but how about for plural nouns?
asked by Lynne 
physics
A block of mass m1 = 28 kg rests on a wedge of angle θ = 47∘ which is itself attached to a table (the wedge does not move in this problem). An inextensible string is attached to m1, passes over a frictionless pulley at the top of the wedge, and is then
asked by radjish 
History
Describe a patrician villa
asked by Claire 
GEN 105 Personality abd Learning styles
• Describe your strongest dimension on the personality spectrum. • Describe how each practice activity reinforced or contradicted something about yourself
asked by Kala Davis 
English
The knight's shield serves as weapon AND protectant during battle. a. adjective b. verb c. conjunction d. interjection C
asked by Anonymous 
physics
A block of mass m1 = 28 kg rests on a wedge of angle θ = 47∘ which is itself attached to a table (the wedge does not move in this problem). An inextensible string is attached to m1, passes over a frictionless pulley at the top of the wedge, and is then
asked by radjish 
English
1.Read the following Papago song. Identify the purpose. No talking, no talking. The snow is falling. And the wind seems to be blowing backwards. A. To inform B. To persuade C. To analyze D. To express 2.which of the following statements about early
asked by gabbi 
chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.50g sample is burned, and 1.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture?
asked by ian 
History
Give me a paragraph on patricians villas from Rome
asked by Claire 
Math
(4,7),(6,4)
asked by Kirandeep 
Math
Norma borrowed $1,800 at 11% interest for 90 days. How much interest did she pay on the loan? a. $49.50 b. $198 c. $2 d. $18.45
asked by Eve 
Research
1) What is the relationship of the Mean, Median and Mode as Measures of Central Tendency in a true Normal Curve?
asked by Jessie 
English
Make a story with these words : climb,explode,sing,bounce,fly,cereal,bouncing castle,bomb,rainbow,hippy,ameriican farmer,superhero,mentally unstable man
asked by Claire 
chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.50g sample is burned, and 1.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture?
asked by ian 
English
I need help writing an english essay
asked by Steven 
geography
there is an indian person and a european person how do they view the taj mahal
asked by ????? 
Chemistry
PLEASE HELP. If I have 0.10 mL of 200 mcg/mL protein, 0.90 mL of distilled water, and 2.00 mL of Bradford reagent, what is the concentration of the protein?
asked by AA 
Physics
A 23.9kg box rests on a table. A 16 kg box is placed on top of the first box, as shown. determine the total in N that the table exerts on the first box.
asked by Marian 
physics
Forces of 9.93 N and 1.23 N act at right angles on a reddishgreen block of mass 3.02 kg. How much acceleration occurs?
asked by i need help 
physics
Forces of 8.85 N and 2.21 N act at right angles on a stack. What is the mass of the stack if it accelerates at a rate of 4.4 m/s^2?
asked by i need help 
physics
What would be the resultant vector with an angle of 30° with the +x axis and has a y component of 8.9 Newtons?
asked by i need help 
physics
What would be the resultant vector with an angle of 30° with the +x axis and has a y component of 8.9 Newtons?
asked by i need help 
Science
What could the relative age of two rocks tell you about them? a. One rock is 10,000 years old, and the other is 8,000 years old. b. One rock is older than the other. c. They both have fossils in them. d. One rock is closer to the surface than the other.
asked by Anonymous 
Algebra
If 3t – 7 = 5t, then 6t =
asked by Angela 
Chemistry
Microwave ovens emit microwave energy with a wavelength of 13.0 cm. What is the energy of exactly one photon of this microwave radiation?
asked by Laura 
earth science
How is the decaying of radioactive uranium into lead used to date rock?
asked by cidne 
earth science
what element was in the ocean and what color was the water
asked by cidne 
physics
A block of mass m1 = 28 kg rests on a wedge of angle θ = 47∘ which is itself attached to a table (the wedge does not move in this problem). An inextensible string is attached to m1, passes over a frictionless pulley at the top of the wedge, and is then
asked by Anonymous 
Physics
In uniform circular motion, which of the following quantities are constant: speed, instantaneous velocity, tangential velocity, radial acceleration, tangential acceleration? Which of these quantities are zero throughout the motion?
asked by John 
Accounting
What is 20% of $80,000
asked by Willard Norman 
English
Please help me which one is coreect in grammar and please explain me. 1.She was moving to singapore on June 2012 for job opportunity. 2. She has moved to singapore on june 2012 for job opportunity.
asked by jessie 
English
Mark or cut slightly _ _ _ atch Large irregular spot or stain _ _ otch
asked by Hayley 
physics
A block of mass m1 = 28 kg rests on a wedge of angle θ = 47∘ which is itself attached to a table (the wedge does not move in this problem). An inextensible string is attached to m1, passes over a frictionless pulley at the top of the wedge, and is then
asked by Anonymous 
Physics
A skateboarder, with an initial speed of 2.6m/s , rolls virtually friction free down a straight incline of length 18m in 3.3 s. What angle is the incline plane?
asked by Whitney 
reading
in the MLK jr i have a dream speech the anophora "one hundred years later" how does the rhetorical device help to strengthen or advance this argument. how does King’s use of anaphora strengthen and advance this argument. Think about: The time period of
asked by loli 
Math
Using continuous compounding. A 13,000 deposit in an account with APR of 4.5 percent is. The balance in the account after 1 year is what.
asked by Jacqueline 
social studies (history)
In what ways did the movement of people and technology into and within the Great Plains effect the United States and its residents?
asked by Monica 
English
What is the title for the student who is a representative of all the students in school? is it school president or student president? Would you let me know about that? Thank you.
asked by rfvv 
History
1) Give a short explanation about mining industry in the 1800s and the effect it had. 2) give a short explanation about Transcontinental railroad construction in the 1800s and the effect it had. 3) give a short explanation about Transcontinental railroad
asked by Kesha 
Ela
What are 2 things that make the zoom sound ,meow sound ,and ding dong sound ?
asked by Anabelle 
Science
A stone with a mass of 225.0g is placed into a graduated cylinder with a starting volume of 200.0ml. If the water in the cylinder is displaced to 225.0 ml, calculate the volume of the rock and its density.
asked by Bianca 
English
1. The reason why I like it is I can enjoy tasting many ingredients. 2. The reason why I like it is that I can enjoy tasting many ingredients. 3. The reason why I like it is because I can enjoy tasting many ingredients. (Which one is grammatical? Which one
asked by rfvv 
History
1) Give a short explanation about mining industry in the 1800s and give and effect it had. 2) Give a short explanation about Homestead act exodusters in the 1800s and give an effect it had. 3) Give a short explanation about cattle drives/beef industry in
asked by Kesha 
Math
It takes the planet Neptune about 164.8 years to revolve once around the sun. What are the least and greatest numbers written in hundreths that could round to 164.8? Explain your answer.
asked by Anonymous 
7th grade Math
Please, help me how to solve this problem 21% of 82 how do you use a fraction to estimate the percent of each number? Thank you
asked by Julie 
Science
The dimensions of an object are 3.5 cm, 3.5 cm, and 2.9 cm. Its mass is 6.0g. Calculate the volume and density of the object. Will it float or sink? Please help me with my other question too. Thank you !!!
asked by Bianca 
maths
solve the equation log3 (23x) = log9 (6x^219x+2)
asked by gibbons1 
maths
sketch the equation of the asymptote y=0 or e^(3x)=0
asked by geez 
English
1. They are having an election for school president. 2. They are having an election for the school president. 3. They are having an election for a school president. (Which one is grammatical and commonly used?)
asked by rfvv 
maths
sketch the graph of inx/x
asked by nangy 
grammar
What is the complete subject if the following sentenc:some people like to take classes to learn new things
asked by mitch 
Math
5(2a + b)2(3a5b) Is the answer 4a+15b just checking
asked by Abby 
Science
Assume the speed of a nerve impulse is 100 m/s. How does this compare to the speed of electricity in a copper wire (approximately 3.00*10^8 m/s)? What does this tell you about the flow of electrons in a wire compared to the movement of ions in a membrane?
asked by Colleen 
math
1. 4+(7) 2. 0+(6) 3. 2+8 4.6+(6) 5. 8+(7).
asked by Jada :) 
math
This year, the sum of Mr. Bellini's age and his son's age is 38 years. 4 years ago, Mr. Bellini's was 5 times as old as his son. How old is his son this year? How old is Mr. Bellini this year?
asked by Jada :) 
organic chemistry
1if you open the tertbutyl chloride and tertbutyl bromide to the air for few hours? What happened to the ratio of the halide mixture during this time? (2methyl2propanol reaction )
asked by jenny 
math
A rectangular plot of land is to be seeded with grass if the plot is 22m X 28m and a 1kg bag of seed is needed for 85m^ of land how many bags of seeds are needed?
asked by jeremy 
Math
How are the factors of 36 related to the factors of 72?
asked by Cassidie 
Physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 94 kg. The mass of the rock is 0.27 kg. Initially the wagon is rolling forward at a speed
asked by Dreama 
combination,Math
Navid took a trip to the store to purchase some balls. His choices at the store were green,blue,white and red balls. If Navid purchased 9 balls, how many different combinations of balls could he have purchased?
asked by Ball Counting 
Human and Social Biology
Describe how social biologist may help to solve the the problems of lack of houses a nd problem ooof sanitation
asked by Michelle 
algebra
how many times can you make a perimeter of 10?
asked by milly 
Calculus
Differentiate y=log(8x^23x+9)
asked by Pat 
Calculus
Find dy/dt. y=cos^4(pi(t)20) If you could please show stepbystep, it would be much appreciated. Thanks in advance!
asked by Jan 
social studies
What patterns do you see in the rise and the fall of many civilization in the Fertile Crescent?
asked by Sandy 
Algebra
mx + nx = p
asked by Anthony 
Calculus
Given a power function of the form f(x)=ax^n, with f'(3) = 14 and f'(6) = 28, find n and a.
asked by Catherine 
(ENGLISH) please check over english work.
I have finished all of the questions, just need someone to look over them. I have posted these questions before, but someone told me to redo them and I decided to post them again. Canada Day Love Match My mother stalked her future son in law, convinced he
asked by Shannon 
Language
Make a simile of pablo sniffed the air.
asked by Anonymous 
chemistry
The band gap of indium gallium arsenide varies based on the concentration of gallium in the material. A sample of InGaAs absorbs light with a wavelength less than 1.37 microns. What is the band gap of the InGaAs sample in eV
asked by heyyou 
French
I need a poem about sunsets with metaphors... I need help!
asked by Mary 
arithmetic
How do you solve this for h? A=1/2(b1 plus b2)?
asked by Reed 
Science~
Please! Please! Please help me really quick! Pleae check my answers! 1. A population of oak trees growing in a region in Canada experiences a change in climate to much colder temperatures and much drier conditions than they have had for many decades. What
asked by Marie 
Physics
A 92 kg disk, with a radius of 0.97 meters, is rotating at 562 rpm. What is its angular momentum, to the nearest tenth of a Joule*sec?
asked by Jay 
Calculus
Differentiate y=log(8x^23x+9)
asked by Pat 
Physics
The lower frequency limit for human hearing is usually considered to be 20.0 Hz. (a) What is the speed of sound in m/s if the air temperature is 20.0ºC? (b) What is the corresponding wavelength for this frequency?
asked by Marissa 
mathprobability
Employees at a company are given a three digit employee identification code. If each digit cannot be repeated, how many different codes are possible? Please help.
asked by bon 
physcis
how can i graph this scenario a hawk flies north 5 miles in 5 min. it turns around and flies south 3 miles in 3 min, then turns back around and flies north 2 miles in 2 min.
asked by Anonymous 
Calculus
A baseball diamond is a square with sides of length 90 ft. A batter hits the ball and runs toward first base with a speed of 21 ft/s. At what rate is his distance from second base changing when he is halfway to first base? At what rate is his distance from
asked by Nathan 
Calculus
Find the slope of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2y^2) at point (3,1).
asked by Nathan 
Calculus
The top of a 24 foot ladder, leaning against a vertical wall, is slipping down the wall at the rate of 4 feet per second. How fast is the bottom of the ladder sliding along the ground when the bottom of the ladder is 7 feet away from the base of the wall?
asked by Nathan 
psychics
The lower frequency limit for human hearing is usually considered to be 20.0 Hz. (a) What is the speed of sound in m/s if the air temperature is 20.0ºC? (b) What is the corresponding wavelength for this frequency?
asked by Marissa 
Calculus
At noon, ship A is 150 km west of ship B. Ship A is sailing east at 35 km/h, and ship B is sailing north at 25 km/h. How fast is the distance between the ships changing at 4:00 P.M.?
asked by Sckricks 
math
58, ____, ____, ____, ____, 2
asked by misty 
algebra
a poll was taken of 100 students at a computer campus to find out how they got to campus. 31 said they drove alone 34 rode in a carpool 25 rode public transportation 5 used both carpool and public transportation 8 used both a car pool and sometimes their
asked by Anonymous 
PreCalculus
You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the unit price for x items. 466p+90x−2390=0 and 484p−22x−978=0 Determine the revenue function. Revenue function R(x)=? I got
asked by Ann 
6th grade math
A bag of fetilizer that weighs 18 3/4 pounds can cover 5000 sq feet. how many pounds of fetilizer will be needed to cover 27,000 square feet? how many bags of fertilizer are needed? explain how you found your answer
asked by rupa 
math
This year, the sum of Mr. Bellini's age and his son's age is 38 years. 4 years ago, Mr. Bellini was 5 times as old as his son. How old is his son this year? How old is Mr. Bellini this year?
asked by Jade 
6th grade math
Can you check these percent proportion problems? 1. 50 students got pizza at lunch. 20% of those got chocolate milk. How many students got chocolate milk? 50/n = 20/100 20n = 100*50 20n = 5000 n = 5000/20 n = 250 students 2. Mr. Ford has 45 fish in his
asked by Alex 
Physics
Moving in the xdirection, a particle carrying 1.0uC experiences no force. Moving with speed v at 30 degrees to the xaxis, the particle experiences a force of 2.0 N. What is the magnitude of the force it would experience if it moved along the yaxis with
asked by Anonymous 
6th grade math
how many 3 3/4 inch wires can be cut from a spool of wire that is 100 inches long will there be any wire left over? if so how much?
asked by Anonymous 
American History
Why did the 21 amendment repeal the 18 amendment?
asked by Olivia 
Social studies
Was Robespierre a hero or villain? What were some of the things he did (good and bad). Im writing a multi paragraph essay and I don't really get who he is and what he did. (Ms. Sue;)
asked by Bethany 
College: Chem 1
What would be the molar concentration of the solute in each of the following solutions? a. 0.50 L containing 38.6 g of NaClO4 b. 0.25 L containing 41.5 g of C4H8O
asked by Anonymous 
Health
The shouldertohip ratio is useful to assess one's fat distribution pattern and future chronic disease risk? T OR F
asked by Anonymous