Sunday

July 24, 2016
Total # Posts: 98,395

**Calc**

sinx+x^2y=1 use implicit differentiation to find the second derivative. For the first derivative I got (cos(x)+2xy)/x^2. I have a feeling that is wrong, can someone please help and show steps on how to do this problem. (studying for a midterm).
*June 8, 2016*

**Science**

What is the equation of the street line that passes through the points 1 and -4 and 3 and 2
*June 7, 2016*

**Physics**

A thermos bottle contains 250 g of coffee at 88 0C. You then decide to add 27 g of milk at 5 0C. What is the equilibrium temperature of the mixture? Assume no heat is loss to the thermos bottle and that the specific heat of water, coffee and milk is about the same. Answer is ...
*June 7, 2016*

**math**

A grapefruit is 8% heavier than an orange, and an apple is 10% lighter than the orange. By what percent is the orange heavier than the apple?
*June 7, 2016*

**Physics**

An electric heater that produces 860 W (1 W = 1 J/s) of power is used to vaporize water. How much water at 100 0C can be changed to steam in 5 min by the heater? Use Lv = 2.25x106 J/kg for water at 100 0C and express your final answer in grams.
*June 7, 2016*

**Math**

0=1/9x+10/7y+8/7
*June 6, 2016*

**chem**

The problem is :2.8 grams of ethene burns in oxygen to form carbon dioxide and water Calculate a)the number of moles in 2.8g of ethene b)the number of carbon dioxide(mole ratio) dioxide formed c)the mass of carbon dioxide formed D)the volume of carbon dioxide formed
*June 6, 2016*

**social studies**

look up "nuclear family internal affects" it should be the first link on goog;e
*June 6, 2016*

**Math**

YW4573 This is a puzzle created by user on the site, you can't just ask for help in order to get the prize with ease.
*June 6, 2016*

**Math**

I think it is talking about two different scenarios.
*June 6, 2016*

**Math**

May i ask how to get this answer?
*June 6, 2016*

**Math**

On friday I'm gonna hang out with two friends. What are the chances that one of them is a guy if: A: one is a girl B: one is a girl born in december You may assume the following things: - Female and male friends are just as likely in general - All months have the same ...
*June 6, 2016*

**Math**

The farmer has chickens and rabbit and has 200 legs and 72 heads how many chickens and rabbits are there
*June 6, 2016*

**Physics**

0 degrees?
*June 6, 2016*

**Math**

Two jackals on the boat, leave one on the other side, go back, get a coyote, drop it off, go back, get another coyote, drop it off, go back, get the last coyote, drop it off, go back, get the jackal, drop it off and the jackal driving the boat gets off too. Keep in mind there ...
*June 6, 2016*

**Math**

Three jackals and three coyotes are on a trek across the Mokalani Plateau when they come to a river filled with carnivorous fish. There is a rowboat in sight, and the party decides to use it. (Both species are known for their cleverness.) However, the boat is too small for any...
*June 6, 2016*

**math**

help ! ms. sue ? Steve ?
*June 6, 2016*

**math**

1. what are the equivalent fraction and decimal for 33 1/3% ? a 1/33 and 0.3 b 1/33 and 3 c 3 1/3 and 0.00 d 1/3 and 0.33 <-- my answer 3. Estimate 78% of 20 a 14 b 16 c 19 d 2 (help??)
*June 6, 2016*

**geometry**

Find the sine of ∠K. 36 77 85 K J I Simplify your answer and write it as a proper fraction, improper fraction, or whole number.
*June 6, 2016*

**Physics**

Answer is 982
*June 6, 2016*

**Physics**

The density of water at 40 C is 1000 kg/ m3. What is the density of water at 900C. Use β= 210x10-6 C0.
*June 6, 2016*

**Physics**

18 mols of gold are shaped like a sphere. What is the sphere’s diameter. Note the atomic mass of gold is 0.197 kg/mol and its density is 19,300 kg/m3.
*June 6, 2016*

**physics**

An aircraft is flying at Mach 1.34 in air at -30C. What is the speed of the aircraft?
*June 6, 2016*

**SOCIAL**

during summer, the beach is crowded. the people who come to the beach, leave it dirty when they go. a small group of school and college students volunteer to clean the beach. how will they plan to carry out the activity. 1. no. of participants 2.materials to carry 3. time plan...
*June 6, 2016*

**MATHS**

PAGE=1798 FIND THE VALUE OF EGG+EGG= EGG+GAP= APP+AGE= AGE+EGG= EGG+APP=
*June 6, 2016*

**Social Studies**

Im gonna be be doing lincolns plan and a paper im just confused like what should i look up what questiosn should i look up so i can get the answers?
*June 6, 2016*

**abc**

Ashok covers 60 km in 1.5 hours with the wind and 2 hours against the wind. Find Ashok's speed and the speed of wind.
*June 6, 2016*

**algebra**

building is 2 ft fro fence that is 9 ft tall. ladder needs to reach 13 ft from ground. ladder is placed 8 ft from fence. How long is ladder?
*June 5, 2016*

**English**

I wouldn't use "in" but I think any of the others are fine.
*June 5, 2016*

**Math **

Jackie earns a base pay of $3000 a month at her sales job. Jackie also gets a 15% bonus on all monthly sales. To make sure she can pay her bills for the upcoming month, Jackie needs to earn at least $4200. Write an inequality to represent this situatio
*June 5, 2016*

**10**

A letter is picked random from the word COMPUTER. What is the probability that it is neither in the word met nor in the word up
*June 5, 2016*

**biology**

A student wants to design an experiment to demonstrate the effects of acid rain on plant life. Which of the following substances should be combined with water to best simulate acid rain? A. Vinegar B. Table salt C. Baking soda D. Ammonia
*June 5, 2016*

**maths**

the average of three numbers is 27.the average of two of them is 18.what is the third number?
*June 5, 2016*

**Math w/reply**

Thank you, thank you! I have never heard of that system. But will continue this packet with that system in mind!
*June 5, 2016*

**Math w/reply**

Hey there, just need help with these two. I need someone to help explain them to me/break them down. 1. gr 1/100=_____mg Answer: 0.6 2. 0.3mg= gr_____ Answer: 1/200 3. gr iii /ss= ______mg Answer: 210 Thank you in advance! *** REPLY: I did not get these answers. These are the ...
*June 5, 2016*

**science**

why do primitive organism have lesser number cells as compared to more advance form?
*June 5, 2016*

**Math**

Amy and Ashley bike along the same trail. Amy bikes the entire trail at a speed of 20 mph and Ashley bikes it at a speed of 15 mph. Amy finishes biking the entire trail 8 minutes before Ashley. How many miles long is the bike trail?
*June 5, 2016*

**math**

32foot ladder at a 70degree angle. How high is top of ladder
*June 4, 2016*

**Math**

Hey there, just need help with these two. I need someone to help explain them to me/break them down. 1. gr 1/100=_____mg Answer: 0.6 2. 0.3mg= gr_____ Answer: 1/200 3. gr iii /ss= ______mg Answer: 210 Thank you in advance!
*June 4, 2016*

**Physics**

Oops, then I miscounted... then would my answer be correct if it was 4?
*June 4, 2016*

**Physics**

This is a theoretical question, ignore the numbers. A 205-kg log is pulled up and to the right on a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0 degrees with respect to the horizontal. The coefficient of kinetic friction ...
*June 4, 2016*

**Math-Calc**

I made that seem a lot more complicated than it was! Thank you for your help!
*June 4, 2016*

**Math-Calc**

f(r)=r/(10r^2+7) find the critical numbers. I found the derivative to be -10r^2+7/(10r^2+7)^2 and now I am stuck. What do I do next?
*June 4, 2016*

**Maths **

Show that points (0,0),(5,5) and (-5,5) are the vertices of a isosceles triangle
*June 3, 2016*

**Chemistry**

3 moles
*June 3, 2016*

**advanced alh**

The number of hours that college students sleep on a week night is approximated by a normal curve with a mean of 7 hours and a standard deviation of 1.7 hours. Answer the question below using a z table: About what proportion of students sleep less than 5 hours on a week night...
*June 3, 2016*

**DRIVING. HELP PLS.**

can someone please explain the actions that should be taken in each step of IPDE process while driving on a highway?
*June 3, 2016*

**chemistry **

a compound or solute with molecular mass 36?
*June 3, 2016*

**Physics **

A body travels a distance of 2m in 2s. 2.8m in next 4sec.What will be speed of body in 10th second of its journey.
*June 3, 2016*

**english**

Audrey said that Kyle was the most unique person she had even met. Why doesn't this statement make sense?
*June 3, 2016*

**Math-Calc**

woops sorry didnt see someone had already posted this
*June 2, 2016*

**Math-Calc**

limx->0 (3^x-6^x)/x please help here do not really know where to even start
*June 2, 2016*

**pub;ic speaking**

no its A
*June 2, 2016*

**public speaking**

B
*June 2, 2016*

**pub;ic speaking**

Which type of speech delivery is one that you are asked to deliver with little or no preparation? A. Extemporaneous B. Manuscript C. Impromptu D. Memorized
*June 2, 2016*

**calculus**

Find the point on the line 4x+2y+5=0 which is closest to the point (-2,-1)
*June 2, 2016*

**Math**

What is the approximate volume of 175 I dont really get the question
*June 2, 2016*

**algebra**

Which function contains this set of ordered pairs? {(–2, –7), (0, 1), ( 3, –17)}
*June 2, 2016*

**Pre-Calculus**

Assume that x, y, and z are positive numbers. Use the properties of logarithms to write the expression 2lnx - 6lny + 1/3ln e^12 as a simplified logarithm. Is this 2lnx - 6lny + 4, or can it be simplified further?
*June 2, 2016*

**math**

Ava and Kelly ran a road race, starting from the same place at the same time. Ava ran at an average speed of 6 miles per hour. Kelly ran at an average speed of 8 miles per hour.
*June 2, 2016*

**Pre-Calculus**

How do I find the domain of K(x) = x(32 - 2x)^2?
*June 2, 2016*

**Math ~ CHECK ANSWER**

no one here seems to be familiar with this topic. And of course, the plots are not visible here.
*June 2, 2016*

**2 social studies questions**

I would so greatly appreciate it. How does Reagan support his statement "Freedom is the victor"? How does Reagan challenge Gorbachev to prove that his reforms are not "token gestures"? *
*June 2, 2016*

**Math**

How do I simplify this Complex Rational Expression? 1/x-1+1/x+1 over 1/x-1-1/x+1
*June 2, 2016*

**Reading**

If your replacing part of a sentence the first thing you should do is look at how the sentence reads. In this case your sentence begins with," For people who are more comfortable with just one method". First of all if your comfortable with one method and suddenly you...
*June 2, 2016*

**algebra**

Which function contains this set of ordered pairs? {(–2, –7), (0, 1), ( 3, –17)}
*June 2, 2016*

**U.S. History (Check)(REED)**

Tactics of the nonviolent civil rights movement were influential in helping change people's minds about racism and stopping discrimination because they made many people realize that African Americans were not the enemy and meant no harm. All African Americans wanted was to...
*June 2, 2016*

**Wastewater Treatment**

In wastewater treatment, dimension the following pre-treatment unit for a wastewater treatment plant receiving a dry weather flow (dwf) of 18,000 m3/day. Assume that flow doubles during rain. A bar screen is used to remove the coarse waste. The rain water flow velocity in the ...
*June 2, 2016*

**economics**

mu=p ,according to cardinal using mathematical derivation
*June 2, 2016*

**Pre-Calculus**

Find a polynomial with the zeros -1, 7, sqrt2, and -(sqrt2). Can this be f(x) = x^4 - 6x^3 - 9x^2 + 12x + 14?
*June 2, 2016*

**MAth**

How much interest is earned in two years in two years on $200 in a bank account at an interest rate of 6%
*June 1, 2016*

**MAth**

24
*June 1, 2016*

**MAth**

How much interest is earned in two years in two years on $200 in a bank account at an interest rate of 6%
*June 1, 2016*

**Physics **

A 580-g squirrel with a surface area of 855 cm2 falls from a 5.2-m tree to the ground. Estimate its terminal velocity. (Use the drag coefficient for a horizontal skydiver. Assume that the cross-sectional area of the squirrel can be approximated as a rectangle of width 11.1 cm ...
*June 1, 2016*

**CHECK my answers for DRIVERS ED**

1. A following distance greater than three seconds is advised when you (1 point) are followed by a motorcycle. are driving uphill. are first learning to drive.*** are being tailgated. 2. If the vehicle following you is too close, what action can you take to avoid being hit ...
*June 1, 2016*

**Physics **

A 580-g squirrel with a surface area of 855 cm2 falls from a 5.2-m tree to the ground. Estimate its terminal velocity. (Use the drag coefficient for a horizontal skydiver. Assume that the cross-sectional area of the squirrel can be approximated as a rectangle of width 11.1 cm ...
*June 1, 2016*

**Math**

Good evening, I posted this question this morning. The answer that someone posted was not clear. Could someone please help me with this problem? x:9=2/3:36 The answer is 0.1666 But this is what I keep getting: x/9 = (2/3)/36 x * 36/36= (2/3) * (9/1) /36 (2/3) * (9/1) /36 = 6 6...
*June 1, 2016*

**Physics **

Consider the 50.0-kg mountain climber in the figure to the right. Find (a) the tension in the rope and (b) the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, ...
*June 1, 2016*

**REED will you check a few more? OR ANYONE**

16. Identify the word or phrase that should be in italics. Riding the Orient Express toward Istanbul, Tom read the novels of Mark Twain. (1 point) Orient Express Istanbul Express Mark Twain**** 17. Identify the word or phrase that should be in italics: He felt like a character...
*June 1, 2016*

**CHECK MY ANSWERS FOR ENGLISH PLEASE**

11. Read the following paragraph found in the selection from "From Emperor to Citizen." The "Articles for Favorable Treatment" stipulated that I could live temporarily in the Imperial Palace without fixing any definite time limit. Apart from three large ...
*June 1, 2016*

**chemistry**

what are the products of a concentrated hydrochloric acid if inert electrodes are used
*June 1, 2016*

**English answer CHECK**

16. Identify the word or phrase that should be in italics. Riding the Orient Express toward Istanbul, Tom read the novels of Mark Twain. (1 point) Orient Express Istanbul Express Mark Twain**** 17. Identify the word or phrase that should be in italics: He felt like a character...
*June 1, 2016*

**Math**

Good morning! Could someone please help me with this problem? x:9=2/3:36 The answer is 0.1666 But this is what I keep getting: x/9 = (2/3)/36 x 36/36= (2/3) x (9/1) /36 (2/3) x (9/1) /36 = 6 6/36 = 6 Thank you in advance!
*June 1, 2016*

**chemistry**

what are the products of a concentrated solution of magnesium chloride if the electrodes used are inert
*June 1, 2016*

**Algebra 1**

Make a box-and-whisker plot of the data. 29, 21, 17, 10, 15, 27, 22, 30 i forget how you do this, can someone explain
*June 1, 2016*

**SchoolCraft**

A gas sample undergoes a reversible isothermal expansion. The figure gives the change ΔS in entropy of the gas versus the final volume Vf of the gas. The scale of the vertical axis is set by ΔSs = 68.4 J/K. How many moles are in the sample?
*June 1, 2016*

**language arts**

Najaf xneleiisksownt
*June 1, 2016*

**language arts**

Which event from The Odyssey best highlights the idea that the ancient Greeks greatly disliked greediness?
*June 1, 2016*

**language arts**

Read the excerpt from The Odyssey. He saw the townlands and learned the minds of many distant men, and weathered many bitter nights and days in his deep heart at sea, while he fought only to save his life, to bring his shipmates home. But not by will nor valor could he save ...
*June 1, 2016*

**Physics**

Two speakers driven in a phase by the same amplifier at a frequency of 640 Hz, are 7 m apart. A listener originally at the position of one of the speakers starts walking away from that speaker in a direction that is perpendicular to the line connecting the two speakers. How ...
*May 31, 2016*

**Math**

24
*May 31, 2016*

**physics**

The pressure in a section of horizontal pipe with a diameter of 2 cm is 143 kPa. Water flows through the pipe at 2.80 L/ s. If the pressure at a certain point is to be reduced to 103 kPa by constricting a section of the pipe, what should the diameter of the constricted section...
*May 31, 2016*

**physics**

A horizontal pipe (Venturi Tube) 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 8.0 x 105 Pa and the pressure in the smaller pipe is 3.0 x 104 Pa, at what rate does water flow through the pipes. Hint...
*May 31, 2016*

**probability**

If a number is chosen at random from the integers 5 to 25 inclusive, find the probability that the number is a) multiple of 5 or 3 b) even or prime numbers c) less or greater than 18
*May 31, 2016*

**mathematics**

a survey shows that 15% of men in a certain town are tall.if a man is chosen on the street of the town one afternoon, what is the probability that he is short.
*May 31, 2016*

**Math**

1.what are the next three terms in the sequence? -6,5,16,27 A.38,49,60 B. 37,47,57 C.36,45,54 D.36,46,57
*May 31, 2016*

**Public Speaking**

Que5ion of policy
*May 31, 2016*

**Public Speaking**

To persuade employees to commit to recycling” is a:
*May 31, 2016*

**THANK YOU!**

No need to apologize. THANK YOU SO MUCH!!! all of you are a big help and its great what you do.
*May 31, 2016*

**Answers for 4 and 12 CHECK**

answers for 4 and 12: 4. Supply-Side Economics 12. peace with honor
*May 31, 2016*