Tuesday
January 27, 2015

Posts by ANONYMOUS


Total # Posts: 76,703

Calculus
Find dy/dx if x^2+y^2=2xy A. x/(x-y) B. (y+x)/(y-x) C. 1 D. -x/y E. None of these Do I equal it to 0 and use implicit rule?
November 30, 2014

Calculus
Find f'(x) for f(x)=(2x^2+5)^7 A. 7(4x)^6 B. 7(4x)^7 C. 28x(2x^2+5)^7 D. 7(2x^2+5)^6 E. None of these Would it be none of these because of the 4x in the chain rule?
November 30, 2014

Calculus
Determine the limit as x approaches 1 f(x) if f(x)={3-x, x does not equal 1 and 1, x=1 A. 2 B. 1 C. 3/2 D. DNE E. None of these
November 30, 2014

chemistry
What is the maximum amount of silver in grams that can be plated out of 3.8L of an AgNO3 solution containing 3.3% Ag by mass? (Assume that the density of the solution is 1.02g/mL .)
November 29, 2014

Chemistry
grams would = 15.4866? .053x5 = .265 molar mass of NaCl = 58.44 (Na=22.99 + Cl=35.45) .265x58.44 = 15.4866... I think I did this correctly, if I did not please let me know where I went wrong. Thank you
November 29, 2014

Chemistry
What does 0.053 M NaCl mean? How many grams of sodium chloride are needed to make 5.0 liters of this solution?
November 29, 2014

Chemistry
I believe it's hypothetical. Just some simple review for my finals and this one slipped my mind. Thank you so much. 12.5g is needed for 250mL
November 29, 2014

phyics
If the coefficient of static friction between the board and the wall is 0.81, what is the least force you can apply and still hold the board in place?
November 29, 2014

science
a rectangle steel block of dimension 10m multiple by 3m multiple by 2m, has mass 45kg calulate the density of the block.
November 29, 2014

math
FreddieMac reports that the average rate on a 30-year fixed rate mortgage is 3.92% as of January 2012. This is down from 4.76% in January 2011 and 5.03% in January 2010. If you have a $225,000, 5%, 30-year mortgage, how much interest will you save if you refinance your loan at...
November 29, 2014

math
Multiply 34.5 by 14 and you should get 483 right. So when i did the math, i got 4830. Can you explain what i did wrong? Do i have to cross out the zero?
November 29, 2014

Algebra B
What is the coefficient of x in the division (18x3 + 12x2 – 3x) ÷ 6x2 ? 3 2 –0.5 –3 I am helping my granddaughter and I need help to explain...
November 29, 2014

English
What is this?
November 29, 2014

geometry
which propery of a rigid transformation is exclusive to a ratio?
November 29, 2014

physics
44 foot skid from a jeep cherokee, how fast was it traveling.
November 29, 2014

Additional maths
Solve the equation 8x^3 -2x*2 -5x-1=0 Hence find the values of Theta< between 0 and 18 which satisfy the equation 8 tan^2 theta-2 tan theta -5=cot theta
November 29, 2014

maths
an observer 1.5meters tall is 20.5 metres away from a tower 22 metres high. determine the angle of elevation of the top of the tower from the eye of the observer
November 29, 2014

math
an observer 1.5meters tall is 20.5 metres away from a tower 22 metres high. determine the angle of elevation of the top of the tower from the eye of the observer
November 29, 2014

Math
Simplify 25a³b - 10a²b³ + 19b² -10a³b + 30a²b³ - 29b² and factor. I got 5b( 3a^3 - 2b + 4a^2b) But how do I find the GFC?
November 28, 2014

math
1289530
November 28, 2014

Math
A cube has a volume of 50 653 cubic metres. What is the surface area of the cube?
November 28, 2014

English
How do you write reflection and response outline?
November 28, 2014

English
A for the second choice
November 28, 2014

English
You___determined to write an A paper for your English class,___ you? a. were, weren't b.was, wasn't c. am ,aren't d. is , isn't I am think A My bus driver __to make up for the time he while__a flat tire. A.hurried,fixed b.hurry,fix c.hurried,fixing d.hurried,...
November 28, 2014

English
yes c is the rghit answer
November 28, 2014

physics
A hot air balloon is traveling vertically upward at a constant speed of 2.7 m/s. When it is 11 m above the ground, a package is released from the balloon. After it is released, for how long is the package in the air? The acceleration of gravity is 9.8 m/s 2 . Answer in units ...
November 27, 2014

Math
The two equal sides of an isosceles triangle are each 24 centimeters. If each of the two equal angles measures 60, find the length of the base and the altitude. (leave your answer in radical form).
November 27, 2014

Pre-Calc.
The two equal sides of an isosceles triangle are each 24 centimeters. If each of the two equal angles measures 60, find the length of the base and the altitude. (leave your answer in radical form).
November 27, 2014

algebra 2
16x^2=56x
November 27, 2014

Maths
How many integer solutions of x1 + x2 + … x6 = 20 satisfies 1 ≤ xi ≤ 9? (use inclusion exclusion principle)
November 27, 2014

Chemistry
compose the micelle 2 agno3 + bacl2 - 2Agcl + ba (no3) 2
November 27, 2014

PHI208
The rise in a laregly texhnical approach to healing
November 26, 2014

math
They are the same.
November 26, 2014

MATHEMATICS
IN A GP THE 5TH AND THE 8TH IS 24 AND 72 FIND THE 6TH
November 26, 2014

Chem
if a person inhales 0.1 mol air per breath, and the pressure is 92kpa and body temp is 37 degrees celcius what is the maximum volume of air this person can inhale
November 26, 2014

math
Scenario 1) You and your friend enjoy riding your bicycles. Today is a beautiful sunny day, so the two of you are taking a long ride out in the country side. Leaving your home in Sunshine, you ride 6 miles due west to the town of Happyville, where you turn south and ride 8 ...
November 26, 2014

Math--1 question
Find the mean, median, mode, and range of the data: 32, 34, 30, 35, 33, 31, 54. If necessary, round to the nearest tenth. Show your work.
November 26, 2014

MATHEMATICS
IN A GP THE 5TH AND 8TH IS 24 AND 72 FIND THE 6TH
November 26, 2014

adult education
criticism of the information processing approach is that it.. a. doesn't form a comprehensive theory b. lacks scientific research c. focuses on creativity and imagination, while ignoring other mental processes. d. views children a blank slates
November 26, 2014

MATHEMATICS
IN A GP THE 5TH AND 8TH IS 24 AND 72 FIND THE 6TERM
November 26, 2014

environmental Science
the entire area of land that a river drains is called
November 26, 2014

Environmental Science
what did Thomas Malthus believe
November 26, 2014

MATHAMATICS
5 .55
November 26, 2014

MATHAMATICS
IN A GP THE 5TH AND 8TH IS 24 AND 72 FIND THE 6TERM
November 26, 2014

Calculus
i plugged in 11/3 x^3 -1/4 but the answer wasnt correct
November 26, 2014

Calculus
solve the differential equation dy / dx = 11x^2y^2 with the condition that y(0) = 4 The solution to the equation is y =
November 26, 2014

analytic
One line passes through the points (1,9) and (2,6), and another line passes through (3,3) and (-1,5). Determine the acute angle between the two lines.
November 26, 2014

analytic
One line passes through the points (1,9) and (2,6), and another line passes through (3,3) and (-1,5). Determine the acute angle between the two lines.
November 26, 2014

physics
a projectile is fired from the vertical tube mounted on the vehicle which is travelling at the constant speed of 30kph. the projectile leaves the tube with a velocity of 20m/s relative to the tube.neglecting air resistance.
November 26, 2014

chemistry----please help
calculate the molar hydroxide ion concentration of each of the following solutions given the pH 4.53. Answer should be for OH-. Please show me how to do this in step by step I tried putting in 10 xy-4.53= 0.000029512 which is 3.0 * 10^-5 It says that the answer is wrong.
November 25, 2014

Chemistry
OH=9.47 -log= 0.976349979 is this correct
November 25, 2014

Chemistry
calculate the molar hydroxide ion concentration of each of the following solutions given the pH 4.53. Answer should be for OH-. Please show me how to do this in step by step
November 25, 2014

Science 1 easy question!!!!
Is K^+1 and F^-1 an ionic bond? My answer: yes
November 25, 2014

Maths
Thank You ;)
November 25, 2014

Maths
In the village school the ratio to boys to girls is 5:6. there are 175 boys. how many girls. please show me full working out but don't give me the answer as I want to find it out for myself. I just need to know how to do it. Thank you
November 25, 2014

Chemistry
Given the molar concentration of hydroxide ion, calculate the concentration of hydrogen ion. [OH-]=0.0010 Can someone please help me with this process. Thanks
November 25, 2014

Chemistry
Determine the acid and base that were neutralized to produce each of the following salts. Li2CO3 (aq). I don't understand how to solve this.
November 25, 2014

Chemistry
Given the molar concentration of hydrogen ion, calculate the concentration of hydroxide ion [H+]=7.9*10-7
November 25, 2014

1 Math question
Estimate $6.56 + $13.02 using front-end estimation. about $19.60 about $18.60 about $20.10 *** about $17.10
November 25, 2014

Biology
In what form of energy does energy from sunlight end up after photosynthesis and cell respiration?
November 25, 2014

math
a 154 lb person burns 420calories per hour riding an exercise bicycle at a rate of 15 mi/hr write a function rule to represent the total calories burned over time by that person.
November 25, 2014

algebra
Tarot cards are used for telling fortunes, and in a reading, the arrangement of the cards is as important as the cards themselves. How many different readings are possible if three cards are selected from a set of seven Tarot cards?
November 25, 2014

physics
a convertible travels down a straight, level road at a slow speed of 13 km/h. A person in the car throws a ball with a speed of 3.6 m/s forward at an angle of 30 degrees to the horizontal. Where is the car when the ball lands?
November 25, 2014

maths
Average weight 0f 6 balls is 6kg.average weight of 7balls is 7kg what's the weight of 7th ball
November 25, 2014

Algebra
I can find the finite differences, but how do I find the number of birds in July? owl.bcpnet. net/Algebra%202/ch6/section09/problem_solving.pdf
November 25, 2014

business math
Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April 15. She sent the payment November 8. The IRS sent her a penalty charge of 8.80% simple interest on the unpaid taxes of $3,600. Calculate the penalty. (Remember that the government ...
November 25, 2014

Spanish
This is really long and I'm behind on my homework so I couldn't read it all I'd change the first line to Pablo Neruda es un famoso poeta de Chile. Hope it helped :)
November 24, 2014

Primary Sources Search Help
I'm looking for primary sources from when Sacagawea was alive that relate to her in some way Otherwise any tips for finding primary sources?
November 24, 2014

history/engllish-thesis
I also have- Sacagawea played a significant role in the Corps of Discovery journey, making her one of America's most influential females in history.
November 24, 2014

history/engllish-thesis
I need help writing a thesis for my history day project, my person is Sacagawea and this years theme is leaders and their short and long term legacies. I don't exactly know where to start. Sacagawea has played a big role in the discovery of Louisisana territory, making her...
November 24, 2014

chemistry-naming
How do I name the following- C3H8? (the numbers are supposed to be subscripts) KCl?
November 24, 2014

Science
2 ml of stock antibiotic (64 mg/ml) was diluted into a test tube containing 2 ml of broth (final volume is 4). A series of 2-fold SERIAL DILUTIONS were performed by transferring 2 ml to three other tubes, consecutively (final volumes now 2 ml in each tube). The final ...
November 24, 2014

Microbiology
2 ml of stock antibiotic (64 mg/ml) was diluted into a test tube containing 2 ml of broth (final volume is 4). A series of 2-fold SERIAL DILUTIONS were performed by transferring 2 ml to three other tubes, consecutively (final volumes now 2 ml in each tube). The final ...
November 24, 2014

Chemistry
I think this is another 2-fold dilution where the answers are 16, 8, 4, and 2, but I'm not sure.
November 24, 2014

Chemistry
2 ml of stock antibiotic (64 mg/ml) was diluted into a test tube containing 2 ml of broth (final volume is 4). A series of 2-fold SERIAL DILUTIONS were performed by transferring 2 ml to three other tubes, consecutively (final volumes now 2 ml in each tube). The final ...
November 24, 2014

Algebra
99 inch pipe is cut into two pieces. One is two times the length of the other. Find the lengths of the two pieces
November 24, 2014

Math - ratio
Mr. Rahim had the same amount of money in his three bank accounts at first. He deposited $44 into account b and $ 80 into account c. In the end, the ratio of the amount of money in account a to the amount of money in account c was 2:7. How much money was there in account b in ...
November 24, 2014

Math
A worker uses 4gray tiles for every 5blue tile That he uses .if he uses 60gray tiles how many blue tiles does he use
November 24, 2014

math
uhm, how do you get it though, but the answer is 41.4
November 24, 2014

math
A cone is made from the figure shown by joining the straight edges and securing them with tape, calculate the angle of inclination, to the nearest tenth of a degree, for the side of the cone.
November 24, 2014

physics
on the surface of planet y, which has a mass of 4.38 x10^24 kg, an object has a weight of 50.0 N and a mass of 30.0 kg. What is the radius of this planet?
November 24, 2014

English
My teammates and___ practice every day after classes are over. a.I b.me c.my d.us I am think a ___ said in our orientation that we much make our decisions about how we are going to make a difference. A.It B.Our Leader C. They D. Them I am think B ____of my friends believe__ ...
November 24, 2014

ratios and proportional relationships
if a tiger eat food that weights up to 15% of its body weight and it eats 75 pounds of food how much does the tiger weigh
November 24, 2014

Math
As a savings plan for college, when their son Bill was born, the Johnson's deposited $10,000 in an account paying 4% compounded quarterly. How much is this account when Bill is 18 years old?
November 24, 2014

Calculus
What does y'' mean in calculus? Is there a word for it? Also is there a word for f'(x)? Thanks.
November 24, 2014

math
Jane had $7 and her sister had $2. Their parents gave each of them an equal amount of money. Then, Jane had twice as much money as her sister. How much money did their parents give each of them
November 24, 2014

grammar
Which is a similie? A) riding like the wind or B) looked like they had come from far
November 24, 2014

government
three types of political party systems and how they affect governing
November 24, 2014

Spanish 1 question
How are lunch traditions changing in the Spanish-speaking world, and why?
November 24, 2014

Spanish
What is a bodegón? What is its significance?
November 24, 2014

Pre-Calc/Trig
okay thank you
November 24, 2014

Pre-Calc/Trig
is the integer n odd or even, explain
November 24, 2014

chemistry
If you need to multiply the following reaction by 2 to be an intermediate reaction in a Hess's law problem, what would be the final value for the enthalpy of reaction you use for this intermediate reaction? C2H4 + 3 O2 2 CO2 + 2 H2O, H = -1410 kJ
November 24, 2014

statistics
from the following list of numbers of discharges each day in september, compute the mean, mode, and range.
November 24, 2014

physics
is it possible to a have a percentage difference of zero in physics
November 24, 2014

accounting
On October 10, 2010, Mason Engineering Company completed negotiations on a contract for the purchase of new equipment. Under the terms of the agreement, the equipment may be purchased now or Mason may wait until January 10, 2011, to make the purchase. The cost of the equipment...
November 24, 2014

chemistry
0.195 m of ca oh 2 solution to neutralize 750 ML of a 0.235 m of hno3 and balance it
November 24, 2014

business math
The weekly payroll of Abkar Hardware includes 19 employees who earn $280. How much is the employer's share of total social security and Medicare taxes for the first quarter of the year?
November 24, 2014

Pre-Calc/Trig
Help me please, I don't understand this write using exponential notation √ 36* 3√ 64 oh and 3 is an exponent
November 24, 2014

physics
n=1, L=0, m=0 n=2, L=0, m=0 L=1, m= -1, 0, 1 n =3, L=0, m=0 L=1, m= -1, 0, 1 L=2 , m=-2,-1,0,1,2 n =4 L=0, m=0 L=1, m= -1, 0, 1 L=2, m=-2,-1,0,1,2 L=3, m=-3,-2,-1,0,1,2,3 n=5, L=0, m=0 L=1, m= -1, 0, 1 L=2, m=-2,-1,0,1,2 L=3, m=-3,-2,-1,0,1,2,3 L=4, m=-4,-3,-2,-1,0,1,2,3,4 The...
November 24, 2014

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