Sunday
December 21, 2014

Posts by Zoey


Total # Posts: 119

Calculus
Determine the equation of the tangent line at the indicated -coordinate. f(x) = e^(-0.4x) * ln(18x) for x= 3 The equation of the tangent line in slope-intercept form is
November 2, 2014

Calculus
To estimate the height of a building, a stone is dropped from the top of the building into a pool of water at ground level. How high is the building if the splash is seen 6.7 seconds after the stone is dropped? Use the position function for free-falling objects given below. (...
September 19, 2014

science
Calculate the buoyant force in air on a kilogram of gold (whose density is about 19 grams per cubic centimeter). The density of air is 1.3 ✕ 10-3 grams per cubic centimeter. Remember that the buoyant force is equal to the weight of a volume of air that is equal to the ...
August 2, 2014

physics
A small rock passes a massive star, following the path shown in red on the diagram above. When the rock is a distance 4e+13 m (indicated as d1 on the diagram) from the center of the star, the magnitude of its momentum p1 is 1.1e+17 kg ·m/s, and the angle α is 116 ...
July 29, 2014

math
x = t − 2 sin t, y = 1 − 2 cos t, 0 ≤ t ≤ 6π Set up an integral that represents the length of the curve.
July 26, 2014

physics
A jumper of mass m=55 kg starts in a crouched position with the jumper's center of mass at a position y1=0 m. Just before the jumper leaves the floor, his or her center of mass is at y2=0.7 m. From another measurement, you have found that the velocity of the jumper's ...
July 26, 2014

science
A hoop of mass M = 4 kg and radius R = 0.4 m rolls without slipping down a hill, as shown in the figure. The lack of slipping means that when the center of mass of the hoop has speed v, the tangential speed of the hoop relative to the center of mass is also equal to vCM, since...
July 20, 2014

calc
Find the centroid of the region bounded by the given curves. y = 2 sin 3x, y = 2 cos 3x, x = 0, x = π/12
July 8, 2014

Science
What are ten observations made by Charles Darwin on his voyage and what are their significance?
April 6, 2014

Algebra 1
Thanks
March 6, 2014

Algebra 1
For the points R (9,4), A (-2,4) and T (9,3),find the length of the hornizontal and vertical sides of the figure.
March 6, 2014

Algebra 1
Explain why any two regular n-sided polygons would be considered to be similar and how knowing this information could help in solving real-world problems.
March 3, 2014

Algebra 1
A circular pool has a diameter of 12 feet. The pool is 5 feet deep everywhere. How much water is needed to fill the pool?
February 27, 2014

physics
A 8.05- g bullet from a 9-mm pistol has a velocity of 346.0 m/s. It strikes the 0.785- kg block of a ballistic pendulum and passes completely through the block. If the block rises through a distance h = 16.04 cm, what was the velocity of the bullet as it emerged from the block?
February 24, 2014

Chemistry
2.5 mol Zn and 8.75 mol HCl react according to the equation Zn + 2 HCl −→ ZnCl2 + H2 . Calculate the amount in moles of ZnCl2 formed. Answer in units of mol
February 21, 2014

Chemistry
AgNO3 + NaCl → AgCl + NaNO3 . How many grams of NaCl would be required to react with 446 mL of 0.211 M AgNO3 solution? Answer in units of grams
February 21, 2014

Algebra 1
Thanks
January 29, 2014

Algebra 1
A train travels on a 30 mile long circular track that surrounds an entire city. What is the area of the city rounded to the nearest half mile?
January 29, 2014

algebra 1
Thanks
January 28, 2014

algebra 1
Once trees grow to a certain height, the trunks quit growing taller and only grow thicker. The forest rangers want to calculate the diameter of the cross-section of some trees in order to estimate how much they grew in the past year. They measured the circumference of the ...
January 28, 2014

MATH CHECK ANSWERS
what?
January 27, 2014

MATH CHECK ANSWERS
CHECK THESE MATH ANSWERS PLEASE 1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.12:30(I PICK THIS) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.30:45 D.24...
January 27, 2014

MATH CHECK ANSWERS
CHECK THESE MATH ANSWERS PLEASE 1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.12:30(I PICK THIS) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.30:45 D.24...
January 27, 2014

socialstudies(CHECK ANSWERS)
modern mexico check answers 7. Which of the following was largely responsible for the Mexican Revolution? A. separation from Spain B. the overthrow of Maximillian(I PICK THIS) C. widespread poverty D. lack of women's rights 9.Why did the Mexican Revolution most likely ...
January 27, 2014

socialstudies(CHECK ANSWERS)
im not sure all it says is modern mexico
January 27, 2014

socialstudies(CHECK ANSWERS)
1. What marked the beginning of agriculture in the Americas? A. Native people began raising goats. B. The hoe was invented. C. Native people began growing maize.(I PICK THIS) D. The Spanish arrived. 2. Aztec aqueducts were an important accomplishment because they A. prevented ...
January 27, 2014

socialstudies
can anyone please answer these 5 before i scratch my brain out.i did the rest but these i couldnt get What marked the beginning of agriculture in the Americas ? A.Native people began raising goats. B.The hoe was invented. C.Native people began growing maize. D.The Spanish ...
January 27, 2014

English
A. is
October 25, 2013

Math
an algebra book weighs 6 oz less than twice as much as grammar book. if 5 algebra books weigh the same as 8 grammar books, how much does an algebra book weigh?
September 19, 2013

Math
On a centimeter dot array, draw all possible rectangles with an area of 16 sq cm and sides whose lengths are whole centimeters. Label the lengths of two adherent sides of each rectangle
February 5, 2013

english
Identify the nouns and verbs in this sentence please. The Lord is my strength and my salvation; in him I will trust.
January 29, 2013

english
What are the nouns and verbs in this sentence? Life is full of choices, so I must learn to make good ones.
January 29, 2013

math
what is three less than 11 times a number is the same as the number decreased by 13. find the number
December 6, 2012

math
I don t understand it that well but now I do Ms.Sue is the best:D
August 22, 2012

Math
Stephen earned $55 last week. He spent 9% of his earnings on entertainment. What decimal represents this percent?
August 17, 2012

Math {ASAP}
x=2
May 15, 2012

Pre-Calc
thank you!
May 2, 2012

Pre-Calc
What's my next step??
May 2, 2012

Pre-Calc
for the conic y=5x^2-40x+78 find an equation in standard form and its vertex, focus, and directrix
May 2, 2012

calculus
thanks!
April 9, 2012

calculus
Suppose $5000 is deposited in a bank account that compounds interest four times per year. The bank account contains $9900 after 13 years. What is the annual interest rate for this bank account?
April 9, 2012

Math
Probability Review , How many different numbers can you make with the digits 2,3,and 4 if you can use each digit as many times as you want?
March 21, 2012

History-The Early Greeks
Why did the use of money help trade to grow?
March 1, 2012

History-The Early Greeks
Name three rights granted to Greek citizens that American citizens have today.
March 1, 2012

History-The Early Greeks
How did early Greek civilizations use their natural surroundings to prosper and grow?
March 1, 2012

History-The Early Greeks
Thanks!
March 1, 2012

History-The Early Greeks
Why did the use of money help trade grow?
March 1, 2012

math
105x212=22,260 estimated=22,300
February 29, 2012

Math, mathematics of finance
I am stuck on these two math questions. If nyone could help me solve them it would be greatly appreciated! Here is the information: Engineering estimates indicate that the variable cost of manufacturing a new product will be $35 per unit.Based on market research, the selling ...
February 18, 2012

Chemistry
Consider the following reaction. 4 Al(s) + 3 O2(g) → 2 Al2O3(s) It takes 1.00 L pure oxygen gas at STP to react completely with a certain sample of aluminum. What is the mass of aluminum reacted?
January 26, 2012

Math
The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
November 22, 2011

Math
If both masses are increased by 60% and the distance between them is halved, by what percent will the force of attraction increase?
November 22, 2011

Math
If 750 m of 3.00-mm-diameter wire has a resistance of 27.6, what length of similar wire 5.00 mm in diameter will have the same resistance?
November 22, 2011

Math
The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size lamp...
November 21, 2011

science, ocean currents
waste produced by people in delaware has been dumped into the atlantic ocean, where it is distributed by surface ocean currents. which coastal area is most likely to become polluted by this waste
November 3, 2011

science, ocean currents
waste produced by people in delaware has been dumped into the atlantic ocean, where it is distributed by surface ocean currents. which coastal area is most likely to become polluted by this waste
November 3, 2011

Math
$9 dollars
September 7, 2011

physics
At highway speeds, a particular automobile is capable of an acceleration of about 1.6 m/s2. At this rate, how long does it take to accelerate from 81 km/h to 117 km/h?
August 28, 2011

geometry
The hypotenuse of a right triangle is 25 cm long. One leg of the same triangle is 7 cm long. What is the length of the other leg? Explain how you found your answer.
June 30, 2011

Calculus/Trigonometry
What is the value of x in the equation of an ellipse??? Equation of an ellipse - (x^2/a^2) + (y^2/b^2) = 1
May 14, 2011

Chemistry
6.940925 amu Can be rounded off to two decimal places as 6.94 amu
March 6, 2011

math
3L+2k = 45
January 17, 2011

4th grade
what is a perpidicular ray?
October 19, 2010

social studies
I have found out that India spent over 7 billion dollars on the common wealth games. My question is that did they beat China's record on the money? I am pretty sure India did but I am still asking to double check.
October 4, 2010

social studies
I messed up on my other social studies question. i ment to ask if the BUILDER of the taj mahal had his hands cut off by emperor shah jahan. Is this true? i need proof if this is true. thanks alot
October 3, 2010

SOCIAL STUDIES
Is it true that Shah Jahan (emperor who built the Taj Mahal) was forced to cut off his hands after he built the Taj Mahal? If this is true then I need proof. I tried going on wikipedia but it doesn't say anything about that on history or any other heading. Please tell me ...
October 3, 2010

SOCIAL STUDIES
I am doing a country project on India. I need some good toursist attractions from India. I know a one and that's the Taj Mahal. But I need some more. Please list a few more tourist attractions, it will be a great help! thanks alot!!!
October 3, 2010

SOCIAL STUDIES
I am doing a country project on India and I need to know the climate of India. I tryed looking for some facts but I didn't find any. Please suggest me some good sites for finding the climate of India or just give some good facts for India's climate. Thanks alot!!!!
October 2, 2010

calculus
Find derivative(use logrithmic functions). y=x^-cosx
March 14, 2010

calculus
Find the derivative of the function. (y^2/(y+3))^3
March 6, 2010

calculus
find the derivative of g(y)= (y^2/(y+3))^3
March 6, 2010

calculus
yea i knw... thnxx foh ur help
March 6, 2010

calculus
Find the limit for the given function. lim t-->0 (sin(8t))^2/t^2
March 6, 2010

chemistry
2NaOH + H2SO4 ---> Na2SO4 + 2H2O n = (Molarity)(vol) n= (0.10M)(0.04L) =0.004moles of H2SO4 0.004molesH2SO4 * 2moles NaOH/1mole H2SO4 = 0.008moles NaOH so M= n/v v=n/M = 0.008/0.50 = 0.004L 0.004*1000 = 4.0 ml
March 6, 2010

calculus
find the derivative of y= 3-secx/tanx
March 6, 2010

Calculus
Find an equation of the tangent line to the curve at the given point. (Assume the tangent line form to be f(x) = mx + b.) y= e^x/x (1,e) I got m= 0 nd b=e could anyone tell if its right?
March 6, 2010

math
i dont no the answer.gosh some 1 help ahhhhhhhhhhh!'
February 25, 2010

Social Studies
Sorry but that is what I just said I didnt want. Could you give me a specific article?
February 3, 2010

Social Studies
I need help finding a current event. I have looked everywhere and can't find one. It is supposed to be about catholic schools week and has to have happened anytime between last sunday and today. please dont give me one about a certain school. i would like one about the ...
February 3, 2010

my math
True or false? Intentionally writing a check on an account with insufficient funds is allowed under certain conditions. I say false? Ben Spender writes a $50 check which is returned by his bank with additional charges. The company he wrote the check to, Art Supply Inc., also ...
January 26, 2010

math
2000
January 6, 2010

math
last year Jodie invested $10000, part at 6% anual intrest and the rest at 8% annual intrest. if she recieved $760 in intrest at the end of the year how much did she invest at each rate. help is much appreciated plz help!!
January 6, 2010

algebra
thank u
January 6, 2010

algebra 1
ok thank you
October 4, 2009

algebra 1
-2/3z=-4/9 i tried to solve, but i keep on getting the wrong answer, and i do not understand what i am doing wrong. please help.
October 4, 2009

Math Word Problem
i do not know how to answer this question i was searching for the answer but nobody has it hhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeelllllllllllllpppppppppppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
April 29, 2009

science
Did you forget to put your question?
February 24, 2009

Algebra
If you are asking what it looks like, it should be lower on the left side and higher on the right side. Pretend there is a general line following the direction that the dots are pointing. My teacher always told us that there is a little man that always starts walking on the ...
February 24, 2009

Math
By saying "how much" do you mean in ounces? If you do, then remember that there are 16 ounces in 1 pound. Half of 16 is 8, so add that to 16 and you get 24. That means 24 ounces = 1 pound and a half. Then, divide that by 3 to get a third, which is 8 ounces. If you ...
February 24, 2009

Algebra
Solve by graphing. Check your solution. y > 2 y > -x + 2 Am I supposed to graph this one on a line or on an actual graph? Thank you.
February 24, 2009

Science
How would carbon-14 help scientists determine the earliest explorers of the new world?
January 16, 2009

world geogrophy
If you were in downtown CHICAGO and facing north, what direction would u go to reach lake michigan?
September 22, 2008

world geogrophy
BOLIVIA is one of two landlocked country in south america. what is the name of the other countries?
September 22, 2008

world geogrophy
How many states are west of mississippi river?
September 22, 2008

world geogrophy
The prime Meridian passes through which three continents?
September 22, 2008

world geogrophy
What is the capital of the state that is borded by colorado, nebraska, missouri and oklahoma?
September 22, 2008

world geogrophy
What river flows just south of cincinnati,Ohio?
September 22, 2008

world geogrophy
What is the Caribbean island with the second largest land area?
September 22, 2008

social studies(World Geogrophy)
a straight is a narrow body of water connecting two larger bodies of water. Find an example of a strait on a map, and write the example...... PS.I DO NOT UNDERSTAND.. PLEASE PLEASE HELP!!!!!
September 15, 2008

social studies(World Geogrophy)
is mississippi east or west of alabama? I am not sure if it is east or west!!..
September 15, 2008

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