Thursday

May 7, 2015

May 7, 2015

Number of results: 60,667

**algebra, math**

A piece of wood that is 9 feet long is cut in half legthwise. Each half is then cut legthwise into six congruent pieces. What is the length of each of the twelve small pieces of wood? Show your work.
*March 21, 2013 by syram*

**chemistry: please check work**

How many grams of solute are contained in 64.3 mL of 0.0238M KOH? Do I convert 64.3ml to L=.0643L Multiiply .0643L and .0238M KOH=.00153 Multiply .00153 and 56.105 g/mol KOH=.0858g KOH
*May 5, 2014 by Suzanne*

**Calculus**

During a certain epidemic, the number of people that are infected at any time increases at rate proportional to the number of people that are infected at that time. 1,000 people are infected when the epidemic is first discovered, and 1,200 are infected 7 days later. Write and ...
*April 9, 2015 by Anonymous*

**Org. Chem.**

A natural product (MW=150) distills with steam at a boiling temperature of 99 degrees Celsius at atmospheric pressure. The vapor pressure of water at 99 degrees Celsius is 733 mm Hg. A) Calculate the weight of the natural product that codistills with each gram of water at 99 ...
*November 10, 2009 by CMM*

**Physics**

A girl notices a ball moving straight upward just outside her window. The ball is visible for 0.25 seconds as it moves a distance of 1.05m from the bottom to the top of the window. How long does it take before the ball reappears? What is the greatest height of the ball above ...
*September 18, 2010 by Jon*

**college math**

Raisel borrowed money from Irlene and agreed to pay back $400 today and $300 in 5 years. If Raisel has a lot of money available now and wants to pay back the loan today, how much money would she have to pay Irlene if the loan was at 6.75% compounded quarterly? For full marks ...
*October 8, 2012 by kerry*

**Biology**

I'm having trouble answering this: The average size of a large fish that humans use for food has been decreasing over time, Exp-lain how, exactly, this happens - be sure to discuss genes, proteins, traits, and selection pressure. This is all I can answer :( The large fish are ...
*April 21, 2011 by Emily*

**Math**

I want to know did I work these problems right Multiply: ( - 6)² - 4² = 36 – 16 = 20 Multiply ( - 3) ( - 6 ) + ( 4 ) ( -2) = 18 + ( -8) = 18-8= 10 Multiply: ( - 3 ) ³ - ( - 8) ( -2) = (-3) times 3 = -9 (-8) times (-2) = 16 -9 - 16 = -25 -25 Multiply: -9 ² - ( -6)² = 81-36= 45
*November 5, 2008 by Gertrude Sanders*

**math**

I did the first part how would i graph it. Problem: Business and finance. The cost of producing a number of items x is given by C = mx + b , in which b is the fixed cost and m is the variable cost (the cost of producing one more item). (a)If the fixed cost is $40 and the ...
*December 22, 2006 by jasmine20*

**English**

1. You must be honest. 2. You have to be honest. (Situation: The person is not honest, so the boss is scolding the man.) 3. You must be honest. 4. You have to be honest. 5. I am sure that you are honest. (The man was honest, and the boss knows it, so he said this way...
*October 19, 2014 by rfvv*

**Calculus**

Consider the function f(x)=sin(1/x) Find a sequence of x-values that approach 0 such that (1) sin (1/x)=0 {Hint: Use the fact that sin(pi) = sin(2pi)=sin(3pi)=...=sin(npi)=0} (2) sin (1/x)=1 {Hint: Use the fact that sin(npi)/2)=1 if n= 1,5,9...} (3) sin (1/x)=-1 (4) Explain ...
*September 9, 2008 by George*

**Calculus**

Consider the function f(x)=sin(1/x) Find a sequence of x-values that approach 0 such that (1) sin (1/x)=0 {Hint: Use the fact that sin(pi) = sin(2pi)=sin(3pi)=...=sin(npi)=0} (2) sin (1/x)=1 {Hint: Use the fact that sin(npi)/2)=1 if n= 1,5,9...} (3) sin (1/x)=-1 (4) Explain ...
*September 9, 2008 by George*

**physics/ conversions**

Please check these problems. 1. 92 X 10^3 km ---> dm My answer: 9.2 X 10^8 dm 2. 5.52 X 10^8 g ---> kg My answer: 5.52 X 10^11 kg 3. 8.66 X 10^-9 m ---> mm My answer: 8.66 X 10^-12 mm 4. 1 um ---> m My answer: 1 X 10^-6 m Thanks. 1 and 4 are correct. No so for 2 ...
*September 21, 2006 by Anonymous*

**spanish**

question algo mas caro que un coche nuevo answer: Unos colegio es mas caro que un coche nuevo is this correct only 2 more to go!!!Thank you can you email me the accent chart
*October 22, 2007 by sam*

**chemistry**

For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. Cu(s) Cu2+(aq) Ag+(aq) Ag(s) B. Cu2+(aq) Cu(s) Ag(s) Ag+(aq) C. Ag+(aq) Cu2+(aq) Cu(s) Ag(s) D. 2Ag+(aq) Cu2+(aq...
*April 18, 2008 by Matt*

**Chemistry**

For the following balanced equation: 2 Ag+ (aq) + Cu(s)--> Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. Cu(s)/Cu2+(aq)//Ag+(aq)/Ag(s) B. Cu2+(aq)/ Cu(s)// Ag(s)/ Ag+(aq) C. Ag+(aq)/ Cu2+(aq)// Cu(s)/ Ag(s) D. 2Ag...
*April 18, 2008 by Matt*

**Chemistry**

For the following balanced equation: 2 Ag+ (aq) + Cu(s) ---> Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. Cu2+(aq)/ Cu(s) // Ag(s) / Ag+(aq) B. 2Ag+(aq)/ Cu2+(aq)// 2Ag(s)/ Cu(s) C. Ag+(aq) / Cu2+(aq)// Cu(s) / ...
*May 8, 2008 by Amy*

**com155**

For the past twenty weeks I have been learning the importance of successful financial planning. (PRESENT PERFECT PROGRESSIVE) Is this a correct present perfect progressive? Would the verbs be learning and planning?
*August 6, 2011 by Heather*

**intermediate algebra**

Short answer.The lenght of the side of a rectangular desk is given by 5x-8y cm.The lenght of the front is given by 5x+8y cm.What is the algebraic expression for the are of the top of the rectangular desk?Include the correct units as part of your answer
*April 10, 2012 by Lueshelle*

**chem **

What is the color of a solution that contains two drops of ohenolphthalein in acideic solution? What is the color in basic solution? My answer is the color in acidic turns colorless in basic solution the color will be pink. Pls. correct me if i'm wrong.
*November 29, 2012 by Angel Locsin*

**Math**

A letter carrier can deliver mail to 112 homes per hour by walking and 168 homes per hour by driving. By what percent is productivity increased by driving? Answer: 56% Is my answer correct?
*May 13, 2013 by Ann*

**Language Arts question**

Identify the simple predicate in the sentence below. This best-selling novel is unavailable for the next three weeks. (1 point) Is*** Is unavailable for the next three weeks novel Correct?
*November 19, 2013 by Gabby*

**math**

A dog weighs 44 pounds and the veterinarian thinks it needs to lose 7 pounds. Mikala wrote the equation x+7=44 to represent the situation. Kirk wrote the equation 44-x=7. Which equation is correct? Can you write another equation that represents the situation? Thank you for ...
*February 26, 2015 by Sam*

**chemistry!**

Of the four general types of solids [molecular, ionic, network covalent, metallic], which one[s] are generally soluble in nonpolar solvents? I'm thinking either molecular or ionic. Are either [or both] correct? molecular: like dissolves like is the rule of thumb.
*December 7, 2006 by Alex*

**physics- check my answers)**

An ice skater of mass 50kg moving at 10 m/s coasts to a halt in 100 m on a smooth ice surface a. calculater acceleration of the skater (.5 m/s) b. what is the force of friction between the ice and the skates? (25 N) c. calculate the coefficient of friction (.051) are my ...
*November 8, 2008 by lauren*

**Physics**

A gun that is spring-loaded shoots an object horizontally. The initial height of the gun is h=5 cm and the object lands 20 cm away. What is the gun's muzzle velocity? Do i use something like v=sqr(k)/m*x. I am getting something like 3.2m/s, is this somewhat correct at all. the...
*April 14, 2009 by John*

**Physics**

A gun that is spring-loaded shoots an object horizontally. The initial height of the gun is h=5 cm and the object lands 20 cm away. What is the gun's muzzle velocity? Do i use something like v=sqr(k)/m*x. I am getting something like 3.2m/s, is this somewhat correct at all. the...
*April 15, 2009 by Malcom*

**Science**

Y r the distances to the planets given in km? I've already answered the 2nd part to this question, and this is the fist part. I think that the distances to the planets are given in kilometres because all the planets aren't that far away from eachother that they need to be ...
*February 22, 2010 by Sara*

**statystics**

: Human Resources took a survey and found that the average commute time one way is 25.4 minutes. However one of the executives feels that the commute is less. He randomly selects 25 commuters and finds that the average is 22.1 minutes with a standard deviation of 5.3 minutes. ...
*April 15, 2010 by Adela*

**English**

What does she look like? 1. She looks like a movie star. 2. She is tall. 3. She looks like a bear. 4. She is beautiful. 5. She is reserved. (Are the answers all correct? What are suitable responses to the question? Would you add some more suitable answers? Thank you. Have a ...
*March 10, 2011 by rfvv*

**physics**

A ball is dropped from 1.5 m and rebounds to 1.2m. How many times will it bounce before losing 90% of it's energy? I assumed energy was hight times gravity so when the rebound was only 10% of the original amount, 90% of the energy is lost. Is this the correct idea? I ...
*March 20, 2011 by Mark*

**chem**

There are a number of definitions for acids and bases. Match the following definitions to the correct theory. Theory Definition A. Arrhenius I - donates or accepts protons B. Bronsted-Lowry II - donates or accepts a lone pair of electrons C. Lewis III - donates a proton or a ...
*February 19, 2013 by shakira*

**math**

Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet? (A). 20 minutes B. 3 hours C. 27 minutes D. 1 hour, 24 minutes How many feet are there in 24 yards? A. 288 (B). 72 C. ...
*October 17, 2013 by Anonymous*

**biology 5**

which of the following is correct? A. mitosis results in 4 identical daughter cells B. meiosis is used for the production of gametes C. cells go through two series of divisions in mitosis D. daughter cells produced by meiosis contain the same number of chromosomes as the ...
*April 17, 2014 by Hannah*

**Algebra!!!**

Complete this sentence with the correct choice: y = 4 is a horizontal line with ________. undefined slope. a slope of 4. a slope of 0. None of the above will make a true statement. Think this through... If y=4, then x can be any number, but y will always be 4. Slope is defined...
*November 1, 2006 by Margie*

**Grammar**

Which choice correctly completes each sentence? 1.Quickly, they ________ all the grocery bags on the floor and ran outside. A.had setted B.set C.sat D.had sat B 2.The travelers _______ us every day this week. A.have wrote B.have written C.have wroten D.writed B Are these ...
*May 13, 2009 by mysterychicken*

**Microeconomics**

What are the conditions for an oligolpolistic market? How do oligopolies determine the level or output at which they will produce? I know the three condition for a oligopoly market. 1. There has only a few large firms. 2.Market has high barriers to entry. 3. Firms may produce ...
*May 26, 2009 by Susan*

**Psychology**

Which of the following statements is false? A Childhood psychopathology is a relatively common occurrence. B Most childhood problems and disorders remit by the end of childhood. C Children today face greater stressors than they did in the past. D Young children and adolescents...
*October 14, 2009 by Nia *

**Physics**

Without glasses, your uncle Albert can see things clearly only if they are between 25.1 cm and 190 cm from his eyes. What power eyeglass lens will correct your uncle's myopia? Assume the lenses will sit 1.70 cm from his eyes. Give answer in diopters. Do not enter unit. What is...
*September 20, 2010 by Rudi*

**English - Native speakers**

Helo :) Can you tell me if the following explanation of mine concerning possessive s is correct? We put 's with every noun in singular (my mother's house)and when we have irregular plurals (this is my children's school) We put just the apostrophe when we have regular plural (...
*April 6, 2011 by Mark*

**English**

Traveling to Fukuoka About ten years ago, I went to Fukuoka, Japan. I went there by ship. In Fukuoka, I visited a bookstore. It was important to buy English books there at that time. I always feel great twhen I look at this picture. (Would you check this writing? Correct ...
*June 20, 2012 by rfvv*

**ELA**

3.What lessons can a modern reader learn from Creon’s choices and their consequences? I started it but I could only think of one lesson, and we need more than one... Here's what i have so far: One lesson that readers can learn is that if you don’t listen to people’s advice ...
*December 30, 2013 by Cookie2*

**5th grade math**

A list of numbers represents the following pattern: For each number after the first, multiply the previous number by itself, and then subtract that number. Which list does NOT represent that pattern? A. 1,1,1,1, and so on B. 2,2,2,2, and so on C. 3,6,30,870, and so on D. 4,12,...
*January 15, 2014 by jamar*

**Social Studies**

I have a question was Osceola a Seminole chief? My book says:"He had no claim on hereditary leadership among the Seminole, but his determination and charisma soon attracted a large following." When I google it it says he wasn't a chief on some sites and on others it says he ...
*February 5, 2014 by Sue*

**System recovery: can't finish my homework !!!!**

I've been waiting for over 13 hours for the computer to finish restoring the registry ( also files). I think the computer is infected. It's a laptop, windows vista home premium. Also could a just shut down the laptop ? If a do will the restoring process start all over or will ...
*May 31, 2010 by Anonymous*

**Chemistry**

I could use some help on this question. I think the answer is choice E, but im not sure. Alcohols can function as both nucleophiles and as electrophiles in various reaction conditions. Which of the following statements is/are true. a)When R-O-H is a nucleophile, the O-H bond ...
*April 21, 2011 by Jules*

**Chemistry**

1) A dog has the same mass for 3 years. State whether this represents an equilibrium or steady state situations, and give your reasons. I'm not sure if I got this question right... I think this is a steady state because the dog is opened to the environment where oxygen is free...
*November 25, 2013 by Tyler*

**English**

* What subject did you learn at the first class? Is this sentence correct? Do we have to use at or in before the first class? Can we say "What subject did you learn at the first period?"
*May 29, 2008 by John*

**math**

the average of 20 numbers in a list is 32. when a number is added to the list, the average becomes 34. What number was added to the list? so i started like this... x/20= 32 my answer is 640. is this correct?
*July 23, 2009 by Julia Ten*

**Math - Probability Statistics**

P(E)=.4, P(F)=.5 and P(E[intersect]F)=.1 , Calculate P(F|E)=? Using conditional probability, I got .2 as the answer, using: P(E[interstect F)/P(F) = .1/.5 = .2 Calculate P(E|F) is .25 using: P(E[intersect F)/P(E) = .1/.4 =.25 Is this now correct?
*August 31, 2009 by Dee*

**math 115**

- (-4)3rd power + (-3)2nd power - .5 3rd power is 72.875 correct? The 4 is negative because its to the 3rd power, but the negative before it makes it positive, am I right? thanks
*November 3, 2009 by Carina*

**Trig**

4tan^2u-1=tan^2u 3tan^2u=1 tan^2u=1/3 sq. root of (tan^2u)=sq. root of (1/3) tanu=sq. root of (3)/3 tanu=sq. root of 1 Did I do this one right? If not, could you please show me the correct method?? Thanks!
*January 9, 2010 by Tara*

**Math**

Rebekah's recipe for 4 1/2 dozen cookies calls for 6 cups of sugar. How many cups of sugar are needed to make 8 dozen cookies? Is the correct answer 10 2/3 cups?
*February 25, 2012 by Taylor*

**Math**

Sunshine Honda sold 112 cars this month. If that is 40% greater than last month, how many cars were sold last month? x=112*100/140 x= 80 Answer: 80 Is this correct?
*May 13, 2013 by Ann*

**Algebra- Middle**

My math question ask is 1/3(x-9) = 2x+7 greater than or less than 4/3(x+4)= -4x. The problem (1) answer = 6. Problem (2) answer = -1. Therefore problem (2) is less than problem (1). Are the answer to the equations correct. Sincerely
*January 13, 2015 by Kyle*

**Math**

Bill has 180 coins. Of these coins, 1/12 are dimes. About how many dimes does he have? I think I have to divide . 180 divided by 1/12 equals 15 dimes that he has. Is this correct?
*March 2, 2015 by Alice*

**English**

1. melt:to be changed into a liquid 2. melt:to be changed into liquid -------------------- word:definition Do we have to use 'a' before 'liquid' or not? Which one is correct?
*March 5, 2015 by rfvv*

**drwls, math**

Let me know if i got it correct. for the problem: When x number of units are sold, the price of each unit (in dollars) is given by p =-x/2 +75 . Find the unit price when the following quantities are sold: 2,7,9,11. My answer: for 2= you gave me the answer of $74 This is what i...
*December 22, 2006 by jasmine20*

**French**

Which of the following is correct? J'ai continué mon voyage J'ai continué avec mon voyage Help would be appreciated :) Thank you for using the Jiskha Homework Help Forum. To answer your question, do you prefer: 1. I continued my trip. 2. I continued with my trip.
*February 27, 2007 by John*

**Math**

1st plane flew at 600km/h 15 minutes later..... 2nd plane flew at 700km/h how long did it take the 2nd plane to overtake the 1st plane? for my answre, I got 1.75h Is this correct? The book said it was 1.5 Thanks
*September 30, 2008 by Larry*

**Health**

What is the correct denominator for calculating the cesarean section rate? A. The total number of discharges B. the total number of deaths for the period C. total number of deliveries for the period D. total surgeries number? I was thinking that the answer was C but im not 100...
*November 3, 2008 by Anonymous*

**math**

Can you tell me if this is the correct way to write in standard form: 1. Fifty-four million, six and six hundredths: 54,000,006.06 2. Thirty-three million, five and five hundredths: 33,000,005.05
*March 11, 2009 by rissy*

**Physics**

Suppose two blocks of ice are heading toward each other. block A has a mass of 4.24 kg and is traveling at 2.24 m/s. Block B has a mass 4.42 kg and is traveling at 2.24 m/s in the opposite direction. After the collision they are traveling in the same speed. what is the speed ...
*November 14, 2010 by Mayte*

**Chem**

How many orbitals have the values n_3(n sub 3) n_3=4 and l_3(l subscript 3) l_3=3 ? How many orbitals have the values n=4, l=3, and m_l=-2? I tried 2 for this one but that is not the correct answer. Could you please help I do not know how to figure out these two problems.
*December 2, 2010 by Kay*

**trig**

the horizontal speed of an airplane is 173 miles per hour. the magnitude of the planes velocity is 200 miles per hour. what angle is the plane climbing? My answer is Cos-1 173/200. is this correct
*June 29, 2012 by luckybee*

**Chemistry**

The enthalpy of vaporization of chloroform (CHCl3) is 29.2 kJ mol-1 at its normal boiling point 61.2 Celsius. what is the standard change in entropy for vaporization of chloroform at its normal boiling point? Answer I got was 29.2/334.2 = 0.0873. (CORRECT?)
*April 2, 2013 by Viv*

**Math **

Write the algebraic expressions for the following. Please check and correct me if I'm wrong!! 1. 3 less than 5 times a number. Answer: 5x-3 2. 18 fewer than half a number. Answer: 1/2x-18 3. 3 more than the quotient of a number and 2. Answer: x/2+3 4. 4 times the difference of...
*August 31, 2014 by Anonymous*

**science**

Shoe companies imbed unique designs on bottom of the sneakers they manufacture.what is the made n purpose? A to increase potential energy B to decrease friction C increase friction D to decrease potential energy. I think its C am I correct?
*January 26, 2015 by jen*

**Math Help**

Hi! I need help with this practice problem. My teacher gave us the answer, "2cot u" BUT she wants us to figure out why that's the correct answer. I'm having some trouble with this and could really use some help. Thank you! Problem: 1+ sec u/tan u - tan u/1+sec u=
*February 7, 2015 by Richard*

**Chemistry**

Use half reaction to balance: CuS + NO3^- = Cu(NO3)2 + NO2 + SO2 S^2- = SO2 S Oxidized Cu^2+ + NO3^- = NO2 + Cu(NO3)2 N Red After balancing the atoms & balancing the charges, I cannot get all the correct coefficients
*March 28, 2015 by Robert*

**calculus**

The number of U.S. citizens 65 and older from 1990 through 2050 is estimated to be growing at the rate of, R(t)=0.063t^2 -0.48t+3.87, (0 less than or = t less than or = 15) million people/decade, where t is measured in decades and t = 0 corresponds to 1900. Show that the ...
*November 30, 2014 by mar*

**calculus**

A 15-ft ladder rests against a vertical wall. If the top of the ladder slides down the wall at a rate of 0.33 ft/sec, how fast, in ft/sec, is the bottom of the ladder sliding away from the wall, at the instant when the bottom of the ladder is 9 ft from the wall? Answer with 2 ...
*April 13, 2015 by emma *

**Calculus**

Hi, I’d really appreciate if you can help me out with the following question: Nick bought a table for his basement. Unfortunately, he discovered that his table rocked back and forth on its four legs. After measuring the table legs and finding that they were all exactly the ...
*March 6, 2007 by Ali Irfan Kurt*

**Grammer**

1)"The product that we chose is shoes." or 2)"The product that we chose are shoes." Which one is correct?
*October 12, 2007 by Ann*

**algebra**

a.(16-2+13=27) B.(8+2-9=11) c.(3-10+9*7=56) right a and c are correct b is wrong first you said B is wrong then you said its right 18 + 2 - 9 = 11
*August 17, 2008 by H*

**French**

Is "je suis allé souvent" correct or should it be "je suis souvent allé?" Thanks
*January 4, 2009 by JK*

**math**

0.5x + 7 less than or equal to 1.3x-8 .5xless than or equal to 1.3x-15 -.8xless than or equal to -15 x less than or equal to-18.75 Is this correct?
*January 5, 2009 by deedra*

**math**

is the answer to this question right? solve for "y" Question: 6x+8y-5=0 Answer: 3/4x-5/8=y is it right (if not can u correct it for me)
*February 5, 2010 by mystery*

**English**

1. What did you do during the summer vacation? 2. What did you do during summer vacation? (Which one is correct, #1 or #2?)
*August 20, 2010 by rfvv*

**English**

Which one is correct? He changes by learning to read. He changes by learning how to read.
*March 22, 2011 by Tasha*

**English**

Which is correct.. Who does the play have as its star? or Whom does the play have as its star? Thank you.
*May 12, 2011 by dee*

**english**

They are going to the park and play or they are going to the park to play. Which one is correct.
*June 26, 2012 by Liz*

**Grammar**

Which one is correct? There is a quarrel between he and Ralph. OR There is a quarrel between him and Ralph.
*July 9, 2012 by Anonymous*

**English**

1. What do you mean 'the hero inside us'? 2. What do you mean by 'the hero inside us'? (Which expression is correct?)
*December 25, 2012 by rfvv*

**English**

1. This is explained in the "Culture" section. 2. This is explained in the Culture section. Which sentence is correct and why?
*May 14, 2014 by Anonymous*

**Calculus**

Given y=log(x), what is dy/dx? If you have to derive this from first principles, then you have to use the defintion of the Logarithm. E.g. you could use that the Logarithm is the inverse of the exponential function and that the derivative of the exponential function is the ...
*April 17, 2007 by Evan*

**calculus**

A particle is moving along the x- axis so that its velocity at any time t ≥0 is give by v(t) = (2 pi - 5)t - sin(pi t) A. Find the acceleration at ay time t. B. Find the minimum acceleration of the particle over the interval [0,3]. C. Find the maximum velocity of the ...
*January 4, 2013 by Vanessa*

**Calculus**

a) find the intervals on which f is increasing or decreasing. Is it ....f is decreasing on the intervals (- infinity, -1) and (1, infinity)...f is increasing on the interval (-1, 1)....... b)find the local min and max values of f.. For f(-1) I got undefined... f(1)=1/4....... ...
*December 31, 2014 by Anonymous*

**chem**

how many protons, nnutrons, atomic mass, mass number, and charge to each of the following have? sodium atom fluorine ion stannic ion for sodium i have protons=11 electrons=11 neutral charge how do i find the number of neutrons cause im pretty sure mass number is protons plus ...
*January 7, 2009 by lyne*

**Science**

Circle one of the following is what the directions state. I think that the answer is increases for all of them but I just want to make sure can someone help me? Cardiovascular activity (increases/decreases) resting heart rate. Cardiovascular activity (increases/decreases) ...
*April 21, 2011 by Anonymous*

**Science questions**

Leaving a beaker of water open to the air until it is empty is a phisscal or chemical change ? Heating a piece of calcium carbonate is a physical or chemical change ? Adding copper sulphate to crystal water is it a chemical or physical change? How to seeds disperse and the ...
*May 2, 2007 by Wales*

**math**

Marco's goal is to eat only 2,000 calories each day. One day for breakfast he consumed 310 calories, for lunch he consumed 200 more calories than breakfast, and for dinner he consumed 800. Did he make his goal? I added 310+510=810+800 and got 1,610 not sure if this is done ...
*March 14, 2013 by jared*

**physics**

A 62.0-kg baseball player slides 3.40 m from third base w/ a speed of 4.35 m/s. If the player comes to rest in third base , (a) how much work was done on the player by friction? (b) what was the coefficient of the kinetic friction between the player and the ground?
*April 10, 2008 by Tina*

**algebra**

At work one day Erica received 36 packages. Speedy delivered 3 times as many as Express, While Express delivered 4 more than Quick Service. How many packages did each service deliver to Erica?
*November 13, 2009 by Sarah*

**Physics please help**

The difference in potential between any two points in a field is the ___ required to move a unit of whatever is affected by the field between the two points. I need help with this. Could it be work? or energy? Please help
*April 10, 2011 by Sejul*

**Stats....plz help....**

Rank the following data in increasing order and find the position and value of the 56th percentile. Please show all of your work. 0 1 6 8 9 9 8 6 3 1 0 9 How do i find the position and value of the 56th percentile??
*October 16, 2011 by Jennifer*

**chem**

How many grams of a stock solution that is 87.0 percent H2SO4 by mass would be needed to make 200 grams of a 35.5 percent by mass solution? Show all of the work needed to solve this problem
*January 17, 2012 by bryan*

**Physics**

Tim and Ray have the same mass and they both climb up the same hill. Tim climbs the hill in 12 minutes and Ray in 22 minutes. a) Who does more work? b) Who develops the most power?
*March 21, 2012 by Becky*

**physics**

A 1.54×10 3 kg car accelerates uniformly from rest to 12.7 m/s in 2.97 s. What is the work done on the car in this time interval? Answer in units of J 002 (part 2 of 2) 10.0 points What is the power delivered by the engine in this time interval? Answer in units of W
*November 8, 2012 by Anonymous*

**Chemistry**

How many grams of a stock solution that is 87.0 percent H2SO4 by mass would be needed to make 200 grams of a 35.5 percent by mass solution? Show all of the work needed to solve this problem.
*September 2, 2013 by Stephanie*