Sunday
February 14, 2016

# Posts by jillian

Total # Posts: 182

Math
A square lot is to planted with santan plants all around. The side of the lot measures 10 meters. If plant will be planted 20cm apart, how many plants must be planted in all?
January 6, 2016

math
2500 santan plant
December 10, 2015

Chemisty
You need 520. mL of a 15 % (m/v) glucose solution. If you have a 25% (m/v) glucose solution on hand, how many milliliters do you need?
December 4, 2015

Chemisty
You need 520. mL of a 15 % (m/v) glucose solution. If you have a 25% (m/v) glucose solution on hand, how many milliliters do you need?
December 4, 2015

Chemistry
How long will it take for a 18.0-g sample of iodine-131 to decay to leave a total of 2.25 g of the isotope? The half-life of iodine-131 is 8.07 days
August 23, 2015

algebra
The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time. The price f(x), in dollars, of product A after x years is represented by the function below: f(x) = 12500(0.82)x...
August 10, 2015

EXPONENTS
thx Sue
April 15, 2015

EXPONENTS
Which is equal to 3^3/3^-1? A -81 B -1/81 C 1/81 D 81 The options totally confuses me because I thought it would have to be 3^2
April 15, 2015

180g/l
I want to make up a 180g/l solution acid using 98% Sulphuric Acid. How much H2SO4 do I use should I make a stock solution first.
September 22, 2014

math
The perimeter of a rectangle is 62 inches. If the length of rectangle is four inches less than four times the width find the dimensions.
September 9, 2014

economics
what are the consequences of providing welfare and subsidies in South Africa?
September 8, 2014

algebra
angles of a triangle The second angle of a garden triangle is four times as large as the first. the third angle is 45 degrees less than the sum of the other two angles. find the measure of each angle. 15 x 4=60 x 3 = 180 side a=15 side b = 60 sIDE C = 3
August 24, 2014

Algebra
H. If you are paid a weekly base salary of \$200 plus an hourly wage of \$5.00, determine an equation for finding your weekly gross pay (P) for t hours. Specify an amount between 25 and 50 hours worked for 1 week and determine your gross pay for that week. 200 weekly base salary...
August 14, 2014

MATH
Please help I am supposed to verify that cot^2x+tan^2x =sec^2xcsc^2x-2 I just can't seem to get the two equations to equal to each other.
May 9, 2014

Chem
A block of metal has a width of 3.2 cm , a length of 17.1 cm , and height of 5.2cm . Its mass is 1.2kg . Calculate the density of the metal
September 12, 2013

Chemistry
The question is: What is the molarity of the copper (II) chloride solution your teacher provided? Show calculations. Obtain the true molarity of the copper (II) chloride solution and calculate percent error. I have done this so far trying to answer the question: Molar Mass: (...
April 23, 2013

chemistry
Monosodium glutamate (aka MSG) NaC5H8NO4 is used as a food additive for flavor or as a preservative. a. what is the mass of MSG (g) that contains 545 mg sodium? b. calculate the percentage of each element present in MSG.
April 12, 2013

chemistry
A sample of hematite Fe2O3 has the mass 4.83 x 10 3 kg. a. how much iron (kg) can be extracted from this sample of hematite? b. what is the percentage of iron in this ore?
April 12, 2013

chemistry
A student needs to use a 0.750 mol sample of (NH4)2SO3 for an experiment: a. how many grams does she need to weigh out? b. how many formula units are in the sample?
April 12, 2013

chem
Body temperature is about 308K. On a cold day, what volume of air at 273K must a person with a lung capacity of 2.00 L breathe in to fill the lungs?
February 23, 2013

English 102
What is "Imagine there is no Heaven" by Salman Rushdie about? I was looking for a general summary because I don't understand
February 5, 2013

Chemistry :(
Calculate the molality, % percent composition by weight, and the mole fraction of HCl in an aqueous 12M HCl solution that has a density of 1.20 g?mL Please help :(
January 22, 2013

Math
The amount of money Kylie spends on food to the amount she spends on gas per week is 7:4. She spends \$45 more on food than gas. How much does she spend on food? How much does she send on gas? On one of the weeks, she spends an additional \$75 on food for a dinner party. What is...
January 16, 2013

statistics
An insurance company charges its policy holders an annual premium of \$200 for the following type of injury insurance policy. If the policy holder suffers a "major injury" resulting in lengthy hospitalization, the company will pay out \$15,000 to the injured policy ...
September 24, 2012

Math-Stats
An insurance company charges its policy holders an annual premium of \$200 for the following type of injury insurance policy. If the policy holder suffers a "major injury" resulting in lengthy hospitalization, the company will pay out \$15,000 to the injured policy ...
September 24, 2012

Calculus
The percentage of the moon's surface that is visible to a person standing on the Earth varies with the time since the moon was full. The moon passes through a full cycle in 28 days, from full moon to full moon. The maximum percentage of the moon's surface that is ...
August 23, 2012

Calculus
How would you begin this problem? On a standard summer day in upstate New York, the temperature outside can be modeled using the sinusoidal equation O(t) = 11 cos (pi/12 t) + 71, where t represents the number of hours since the peak temperature for the day. For 0 less than or ...
August 22, 2012

Calculus
What will the graph look like for two full periods?
August 22, 2012

Calculus
What would the values of A, B, and C be in this problem? The tides in a particular bay can be modeled with an equation of the form d= A cos (Bt) + C, where t represents the number of hours since high-tide and d represents the depth of water in the bay. The maximum depth of ...
August 22, 2012

Calculuc
How do you set up this problem? The decay constant for the radioactive element cesium 137 is .023 when time is measured in years. Find its half-life.
August 22, 2012

Maths
I was given a question on number patterns. The queston states tha I must keep adding one table to increase the amount of seatings by keeping it in a square formation. I need to giv a general formula but I am struggling with the sequence
April 4, 2012

Could someone please check this for me. I had to rewrite the following sentence using a direct object pronoun in two different ways. I wrote: Nosotros queremos leerlos. Los hosotros queremos leer. Thank you for checking
January 29, 2012

Precalculus
A nautical mile equals the length of arc subtended by a central angle of 1 minute on a great circle on the surface of Earth. If the radius of Earth is taken as 3960 miles, express 1 nautical mile in terms of ordinary, or statute, miles.
January 12, 2012

History
It doesn't give me any information about culture, language or religion? I could have looked it up on wikipedia myself, but I was looking for a more credible source. I thought this site was run by teachers and tutors.
December 18, 2011

History
The world can be divided into West (Occident) and East (Orient) Describe the origins of this division, and How are they... different in culture? language? and religion? Thanks for any and all help!!!
December 18, 2011

Math
Write the equation of the line passing through the point (-2, -4) and perpendicular to y= (-1/2x)-1
December 14, 2011

Calc
There should be two answers for each because there are two equations.
December 14, 2011

Calc
Evaluate the function at the given values of the independent variable and simplify. f(x)= {x^2)-3 if x is less than or equal to -2 {6x+1 if x > -2 a. f(-3) b. f(0) c. f(-2) How do I solve this/what are the correct answers so I can check my work?
December 14, 2011

Calc
Calculate the exact values of sin(theta) cos(theta) and tan (theta) when theta=240 degrees. How would I do this with and without a calculator?
December 9, 2011

Math
State the exact values of the following. cos(360 degrees) sec(7pi/2) tan(-9pi/2) How do I do these? Thanks!
December 9, 2011

ENG 101
Im taking my first college class in ENG 101 and i need to write an persuasive essay and Im having a hard time. I was wondering if anyone can help me come up with an outline or what I reasons that I can provide and I can come up with minor details. Here is the assignment: Final...
December 2, 2011

math
Suppose the ratio of the number of boys to the number of girls in a class is 7:3. What percent of the class is girls?
November 14, 2011

science
thanks ahah didnt mean to post twice
October 24, 2011

science
Aside from temperature change what is another but less major reason why sea levels might rise due to climate change?
October 24, 2011

science
Aside from temperature change what is another but less major reason why sea levels might rise due to climate change?
October 24, 2011

Algebra 2
81+76+82=239 239/3=79.6 81+81+76+82=320 320/4=80 your missing number or the grade you need to get is an 81 at least. if you make an 81. you will have an 80 as you average grade
October 19, 2011

could you help me check my answers?
October 19, 2011

thank you so much i have a whole page of these... im so confused!
October 19, 2011

n/3-8=-2 what is n?
October 19, 2011

Math
one of them i 81
October 19, 2011

Algebra
5/2x-8/1=-3
October 19, 2011

psy
I have read prior post and my book but I can not figure out what is the connection between learning theory and mechanistic and reciprocal interactionism? I am not even sure if the definitions I have are correct although my answers were graded and excepted. Compare mechanistic ...
October 12, 2011

Vocab./English
i would say b) because the mother had little respect for you because the baby started crying if the baby was sleeping she would be thankful
August 3, 2011

Chemistry
I blanked how to solve this: How many grams of carbon dioxide are produced when 2.5 grams of sodium bicarbonate reacts with excess citric acid according to: 3NaHCO3+H3C6H5O7 -> Na3C6H5O7+3CO2+3H2O Could you include the steps, please? Thanks.
June 15, 2011

calculus
An open box is to be constructed so that the length of the base is 4 times larger than the width of the base. If the cost to construct the base is 5 dollars per square foot and the cost to construct the four sides is 3 dollars per square foot, determine the dimensions for a ...
April 9, 2011

chemistry
.000025MFe ???
March 8, 2011

John Updike's short story entitled "Son" covers four generations, correct-great grandfather, grandfather, father and son, correct? I dogpiled this and can't find anything on it. If anyone can direct me paragraph- by paragraph who is being spoken about, I'...
February 17, 2011

English
After reading the short story, we have to write a son's perspective in today's world and a father's perspective in today's world about their relationship- it's a little hard when I'm confused about what the short story is really about and I'm a girl...
February 16, 2011

English
Can someone direct me to where I can get an analysis of "Son" by John Updike-I have searched everywhere and I'm totally confused on this short story Thank you
February 16, 2011

Math
x^+y^=36 y=x+2 Find exact solution for the system of equations
February 9, 2011

Math
How do you find the solution to this system of equations? y=x+2 y=x(squared)
February 9, 2011

Physics
A mass-on-a-spring system has a spring constant k = 384 N/m and a mass m = 0.51 kg. (a) If it is given an initial displacement of 0.22 m and then released, what is the initial potential energy of the oscillator? = 9.29 J (b) What is the maximum kinetic energy of the oscillator...
December 9, 2010

college chemistry
I dont understand how I am supposed to give two separate half reactions.
October 25, 2010

college chemistry
HIO3 + FeI2 + HCl --> FeCl3 + ICl (in acidic solution) Show and label the two balanced half-reactions (oxidation and reduction). Add H2Os, H+s or OH-s as needed. I just wanted to know if the answer I got is correct 2FeI2 +6HCl +Cl +HIO3-->6FeCl3 +ICl +3H20
October 25, 2010

college
I dont know which are the half reactions.
October 23, 2010

college
HIO3 + FeI2 + HCl --> FeCl3 + ICl (in acidic solution) Show and label the two balanced half-reactions (oxidation and reduction). Add H2Os, H+s or OH-s as needed.
October 23, 2010

Physics
Hi, I posted this under my twin's account by accident-I'm Joelle Thank you
September 23, 2010

Physics
I had this question last night for Dr. Bob-A fox sees a piece of carrion thrown from a nest 14 m high and goes to get it. Carrion is thrown 1.5 horizontal velocity. Fox is 7. m from base of tree. What is mgnitude of fox's average velocity if it grabscarrion just as it ...
September 23, 2010

Physics
Forgot to say the wind is due east while the plane is traveling due west
September 22, 2010

Physics
So is the answer ever 2/3 greater than V plane or just 2/3 V-
September 22, 2010

Physics
I have a question An airplane is flying at 120km/h due west moves into a region where the wind is blowing at 40km/h. If the planes original velocity is Vplane, what is the expression for the plane's resulting velocity in terms of V plane? Answers are given 1/3 greater than...
September 22, 2010

Physics
I have a question An airplane is flying at 120km/h due west moves into a region where the wind is blowing at 40km/h. If the planes original velocity is Vplane, what is the expression for the plane's resulting velocity in terms of V plane? Answers are given 1/3 greater than...
September 22, 2010

home work
^*pertains
September 5, 2010

chemistry
what is the freezing point of pure acetic acid being stirred and not being stirred. also at what point does it become a solid then a liquid, and vice versa.
July 10, 2010

Language
It has to do with the game of polo. More than one pony per player is needed in order to allow tired mounts to be changed for fresh mounts between or even during chukkas. There are typically between 4 to 8 ponies per player. The group of ponies for a given player is commonly ...
June 3, 2010

Biology
The objective is to trace a drop of blood from an ear lobe capillary to a big toe capillary specifying all blood and heart structures it passes through. What would be a good website to refer to for help with this?
May 22, 2010

Health
Describe two approaches or indicators to measure patient outcomes. If I could locate a book on the subject I would, but I don't know of any resources. Thanks
May 18, 2010

Chemistry
Can someone explain what properties of carbon make it so versatile? Thank you
May 17, 2010

Chemistry
Which compound is a saturated hydrocarbon? ethane ethene ethyne ethanol Thanks for any help you can give
May 3, 2010

math
3. You recently started the paperwork to purchase a new home, and you were just notified that you can move into the house in 2 weeks. You decide to hire a moving company, but are unsure which company to choose. You search online and are interested in contacting two companies, ...
April 25, 2010

math help
Let u = [2,−3, 1] and v = [0, 1, 4]. Calculate the vector u − v. Place u and v tail-totail to form two sides of a triangle. With regard to this triangle, what does u−v represent? Calculate the number u•u and discuss its relevance to the diagram you have ...
April 15, 2010

Biology
What is the habitat and # of living species of: 1.single celled protozoa 2.joint legged arthopods 3.back bone chordates
April 1, 2010

physics
A 1.00-kg duck is flying overhead at 1.50 m/s when a hunter fires straight up. The 0.010 0-kg bullet is moving 100 m/s when it hits the duck and stays lodged in the duck's body. What is the speed of the duck and bullet immediately after the hit?
March 29, 2010

Geometry
A diameter of a circle is 32 yards long. A chord is 11 yards from the center. How long is the chord?
March 24, 2010

Geometry
How would you solve these? The radius of a circle is 34 meters long, and a chord of the circle is 60 meters long. How far is the chord from the center of the circle? The diameter of a circle is 60 inches and a chord of the circle is 48 inches long. How far is the chord from ...
March 24, 2010

English
I need to know what the summary of Imagine There Is No Heaven by Rushdie.I don't understand it at all
March 15, 2010

math
A: Solve the following equation: k2 + 4k = 0 A: By factoring B: By using the quadratic formula D: Do the results in A, B, differ from each other? Why or Why not?
February 28, 2010

math
Give the equation of a line perpendicular to the line y = -8x + 8 having the y-intercept 2 units below the y-intercept of the given equation. At what point the two equations cross each other?
February 28, 2010

math
Calculate the range, standard deviation, and interquartile range for the data set: {-1, 0, 1, 2, -1, 0, 1, 2, -1, 0, 1, 2, 1, 1, -2}
February 27, 2010

HELP
Did any members of the present court justices vote on the Hazelwood case in 1988? If any did, how did they vote? Who selects the justices, and how long do they serve on the court?
February 3, 2010

Journalism
I have descriptions of things and need to match people. I'm not sure who this is. Originally this news -gathering agency resembled a monopoly because of the power it possessed. At one time it was cpmposed of several agencies, principally in New York and the Midwest. A ...
January 5, 2010

Math
Find the length of segment BC if segment BC is parallel to segment DE and segment DC is a medsegment of triangle ABC. A(-3,4) E(4,3) D(1,1) B and C do not have coordinates
January 5, 2010

Chemistry
Explain in terms of forces between structural units why H2O2 has a higher melting point than C3H8. Also, which of the following has a lower melting point? NH3 or AsH3 C3H7OH or C2H5OCH3 I know that this has to do with hydrogen bonding. Can you possibly briefly explain ...
December 9, 2009

English
I am having trouble finding information on coffee makers for a modern invention project. I need information like where it was invented,purpose,where it's sold,customer,how much it costs, and other interesting info. If you have any recommandations for websited it would be ...
December 6, 2009

Chemistry
941 - 418 = 523 418 - 163 = 255 523 + 255 = 778 778/2 = 389 kj/mol (did it on mastering chemistry, answer was correct)
November 11, 2009

i need help finding what these words are from these clues: possible opening found in the cell membrane substance which makes up cell walls granular material in the nucleus that thickens to become chromosomes the endoplasmic reticulum is a network of.... structures responsible ...
September 15, 2009

Biology
I need help with a crossword and I cant figure out what the words are too these clues: Possible opening found in the cell membrane substance which makes up cell walls granular material in the nucleus that thickens to become chromosomes the endoplasmic reticulum is a network of...
September 15, 2009

math
3x+2y = 0 x-2y = 0 If the system has infinitely many solutions, express your answer in the form x=x and y as a function of x Your answer is x=? y=?
September 3, 2009

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