natalia
Popular questions and responses by natalia
Algebra 1
A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Is this an example of a: random sample, systematic sample, selfselected sample, convenience sample, bipartisan sample, or
asked on January 13, 2017 
Chemistry
How many moles of a gas at 100 degrees celciuos does it take to fill a 1.00 flask to a pressure of 1.50 atm?
asked on November 19, 2010 
agricultural science
breeds of broilers in Guyana and breeds of layers in Guyana.
asked on February 11, 2010 
English
what is the adjective in sentence "Sam sees a yellow bus"
asked on September 27, 2011 
Science
Calculate the expansion work done when 50g of water is electrolysis under constant pressure
asked on February 3, 2016 
calculus
Does any tangent to the curve y=ãx cross the xaxis at x= 1? If so, find an equation for the line and the point of tangency. If not, why not?
asked on March 1, 2010 
geography
the wide looping curves which are found along parts of the courses of some rivers are called: a.meanders b.flood plains c.river bluffs d.oxbow lakes
asked on February 22, 2010 
physics
what are nonrenewable energy sources?
asked on February 11, 2010 
Biology
I am doing an essay about the nuclear envelope. However, I can't find very good information about the function of this organelle. For example, how does the nuclear envelope protect the nucleus?
asked on March 17, 2008 
math
The hieght of a model rocket is 4% of the height of the actual rocket.The model is 1.8 meters high. How high is the actual rocket?
asked on October 9, 2015 
Chemistry
what is the percent by mass of nitrogen in (NH4)2CO3? how do you do this ?
asked on January 2, 2011 
Physics
A ball of mass 5.0 kg moving with speed of 2.0 m/s in the +xdirection hits a wall and bounces back with the same speed in the xdirection. What is the change of momentum of the ball?
asked on March 31, 2011 
information technology
what are some of the negative impact of sharing information on a network?
asked on February 15, 2010 
Algebra
Thanks to those who helped with my question: y+3=1/12(x1)^2. The only thing I am still unsure of is how to write the equation for the directrix. Do I just simply write 0=33, (the values plugged in for y=kp). Thanks again for your help!!
asked on November 30, 2008 
english
are the following command sentences get into the car sit down and read your book
asked on October 9, 2008 
physics
Cliff divers at Acapulco jump into the sea from a cliff 30.1 m high. At the level of the sea, a rock sticks out a horizontal distance of 9.19 m. The acceleration of gravity is 9.8 m/s With what minimum horizontal velocity must the cliff divers leave the
asked on October 13, 2019 
math
A metal bar weighs 8.15 ounces. 93% of the bar is silver. How many ounces of silver is in the bar
asked on February 28, 2019 
Math
adeline spent 5/8 her money on books and 1/2 of the remainder on food. what percentage of her money had she ledt?
asked on March 5, 2018 
Algebra 1
I get a bit confused so I hope someone can help with this question Consider the total amount that you are willing to spend on the buisness and how much it will cost you to make your items. Write an inequality that represents the fact that while making each
asked on February 10, 2018 
Algebra
two ships leave the same port at the same time. One travels north at 12 miles per hour. The other travel west at 5 miles per hour. After four hours, how far apart are the two ships?
asked on December 5, 2017 
Algebra
Richard takes 35 minutes to mow a lawn, but with the help of his friend Joe it only took him 15 minutes. If Joe worked alone, how long would it take Joe to mow the same lawn?
asked on February 21, 2017 
Algebra 1
Simplify using long division. (remember to show all your work.) 3. (728x^2+4x^336x)/(x3) 4. (8b^36)/(2b1) simplify the expression, if possible. state the excluded values, if any. 5. 10x^225X+15^5x5 6.2w^218^w^2+6w+9
asked on January 13, 2017 
Algebra 1
Graph each function, identify the domain and range, and compare the graph with the graph of y=x^1. 1.y=x^10 Domain: Range: compare: 2.y=x+3^1+3 Domain: Range: compare: solve and graph.
asked on January 13, 2017 
Math
How to put 0.46 ,0.6 , 0.41 from least to greatest
asked on September 1, 2016 
Calc
Hello! Really can't wrap my head around this so please help! Consider the function: f(x) = x^2+(1000x)^2 First find out where it is increasing, and then use this fact to determine which number is larger: a) 1000^2 or b) 998^2 + 2^2 I found that the
asked on August 7, 2016 
math
Line segment segment CD has a slope of negative start fraction two over three end fraction and contains point C(−3, −6). What is the ycoordinate of point Q(−1, y) if segment QC is perpendicular to line segment segment CD question mark
asked on March 30, 2016 
zambia school
500ml of gas at 20 degrees celcius is under a pressure of 100cm of mercury what would be its volume at s.t.p?
asked on October 4, 2015 
Physics
Engineering a highway curve. If a car goes through a curve too fast, the car tends to slide out of the curve. A frictional force acts on a fast car to oppose the tendency to slide out of the curve. Consider a circular curve of radius R and bank angle θ,
asked on July 6, 2015 
Physics
1. A cannon ball M = 10.0kg with V = 2.4×102m/s is broken into 2 parts, if m1 = 6.4kg with angle 37° and m2 with 53°, what is the magnitude of v1 and v2?
asked on April 5, 2015 
Science
A train is traveling west with a force of 820 N, and then the conductor applies the brakes with a force of 500 N. What is the resulting net force on the train?
asked on February 27, 2015 
physics
Find the total displacement of a mouse that travels 1.0m north and then 0.8m south.
asked on December 22, 2013 
Physics
a simple pendulum consists of a 1.5 kg mass connected to a cored without and mass or friction. Initially the pendulum is vertically positioned when a 2.0 kg mass collides with ie, causing the pendulum to displace vertically upward 1.25 m. After the
asked on April 22, 2013 
Geometry
In Rhombus PQRS PQ=3a=7 and QR = 4a11. What is the value of a?
asked on January 9, 2013 
math
How to multiply long fractions
asked on October 29, 2012 
English 002
Tell us why it is important to use good grammar, proper punctuation and clear senteces when you need to le someone know are displeased.
asked on July 27, 2012 
English
Many days of the year are "national" something or other day. For instance, National French Fry day is in July. Write a paragraph telling your reader what day you'd like to start. Remember to use complete sentences. Remember that all the sentences need to
asked on July 12, 2012 
English 002
Why complete senteces can help us in our writing at our jobs?
asked on July 12, 2012 
geometry

chemistry PLEASE HELP
The density of water is 62.4 lbs/ft^3. what mass of water in kg will a rectangular can hold if it measures 2.00 ft by 3.00 ft by 6.00 inches?
asked on September 27, 2011 
Math (please help!)
You have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tails up, the ratio of heads up to tails up is 1 to 1.5. How many coins are tails up? How many coins in all?
asked on April 19, 2011 
Math
You have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tails up, the ratio of heads up to tails up is 1 to 1.5. How many coins are tails up? How many coins in all?
asked on April 19, 2011 
math
a jet flies with wind at 1100 km/h and against the same wind at 750 km/h.Find the rate of the wind and the speed of the jet in still air.
asked on March 1, 2011 
geography
one of the most recent benefits of the mountaineous regions of some caribbean islands,with their numerous rivers is: a.logging and recreation b.mining for gold and water sports c.ecotourism and recreation d.hiking and hunting
asked on February 22, 2010 
geography
in the caribbean the potential for hydro electric power is greatest in which of the following groups of territories? a.Trinidad,Jamaica and Barbados b.Guyana,Jamaica and belize c.Trinidad,St.Lucia and St.Kitts d.Guyana,Barbados and the vergin island
asked on February 22, 2010 
geography
some material or load of the river is transported by dumping or hopping from one point to another by force of the water.this is called: a.traction load b.saltation c.solution d.suspension load
asked on February 22, 2010 
biology
a hibiscus plant was attacked by mealybugs which completely destroyed them.the mealybug was said to have thrived because it was not in its natural habitat.what is the likely effect of introducing an organism,like the mealybug,into a new habbitat?
asked on February 15, 2010 
biology
a hibiscus plant was attacked by mealybugs which completely destroyed them.what is the relationship between the mealybug and the hibiscus plant.
asked on February 15, 2010 
information technology
discuss the concept of teleconferencing and telecommuting.
asked on February 15, 2010 
information technology
describe the network of presentataion of rind,star and bus.
asked on February 15, 2010 
physics
what are renewable energurces?
asked on February 11, 2010 
chemistry
what are the physical properties of sucrose?
asked on February 11, 2010 
physics
what are some questions on work?
asked on February 11, 2010 
physics
what are some questions on momentum?
asked on February 11, 2010 
chemistry
an aqueous solution contains 2 solutes A&B.A is soluble in hexane,B is not.Hexane is liquid at rom temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe giving full practical details how you would produce a
asked on February 11, 2010 
chemistry
when is it better to use fractional distillation other than simple distillation?
asked on February 11, 2010 
physics
what are some examples of sources of energy?
asked on February 11, 2010 
chemistry
What are the physical properties of sucrose.
asked on February 11, 2010 
chemistry
A sample of sucrose as been contaminated with sand.How would you purify the sucrose
asked on February 11, 2010 
chemistry
An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce
asked on February 11, 2010 
science
An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce
asked on February 11, 2010 
science
A sample of sucrose as been contaminated with sand.How would you purify the sucrose
asked on February 11, 2010 
chemistry
describe how you would produce pure samples of iron and sulphur powders from a mixture of the two.
asked on February 11, 2010 
Physics
A rollercoaster car starts at rest on top of a frictionless hill of height 17 m, slides down to ground level, and then into a frictionless loop of radius 5 m. When the car is at the side of the loop (level with the center), find the magnitude of the car's
asked on November 6, 2009 
Algebra
My standardform equation is (x+3)^2+(y+2)^2=4. Do I find the radius by doing the square root of four? I just wanted to check on this. Based on the example in my book, it seemed like this is the way to do this, but I wanted to make sure, because they
asked on November 30, 2008 
Algebra
(I posted this yesterday, if it looks familar, but no one was on who could help me). I am supposed to graph y+3=1/12(x1)^2. How do I find the equation of the directrix, and the coordinates of the vertex and the focus?
asked on November 30, 2008 
Algebra
Hi again. I am supposed to graph y+3=1/12(x1)^2. How do I find the equation of the directrix, and the coordinates of the vertex and the focus?
asked on November 29, 2008 
Algebra
I am supposed to write the standard equation of the parabola with the directrix x=1, and the vertex 6,2. I got y6=1/4p(x2)^2. Is this correct? I am supposed to graph y+3=1/12(x1)^2. I tried to find p, and I got 36. I don't think this could be correct,
asked on November 29, 2008 
Algebra
what is the equation of the line that passes though the points (3,4) and (9,6)
asked on May 28, 2008 
math
how would you make an equation for a decreasing linear relation?
asked on September 17, 2007 
biology
Indentify what category (protein, carbohydrate, or lipid) each of the following is: hemoglobin, ligaments, RNA, DNA, muscle fibers, cholesterol I thought RNA and DNA were nuecleotides.. but who knows? Thanks in advance. If those are the only 3 possible
asked on September 27, 2006

Math
peepee paperrrrr
posted on June 8, 2020 
Math fractions
Eric practice piano and guitar for a total of eight hours this week he practice the piano for 1/4 of that time how many hours did Eric practice that piano this week
posted on April 22, 2020 
Math
a) $21,815.02
posted on March 26, 2020 
math
Garage
posted on March 3, 2020 
arithmetic
Well 20 :D
posted on January 10, 2020 
Math
uh the answer is obviously 66.666666 miles DUR BRUH, broski cookies
posted on December 2, 2019 
Psychology
We fully support. I also think that not always everything turns out in education, for example , in college. For example , I always got problems with chemistry. Therefore , this individual often used examples of readymadeworks. Likee these:
posted on February 21, 2019 
Math
If 1/3 of the loaf was left, the whole loaf will be 3x, so the answer will be 18.
posted on February 19, 2019 
Algebra please help answer
It would still be 1 millimeter, because think about it. If it triples in length every 10, you would multiply. 1 times 3 is 1 plus the other minutes making it 1. TRUST ME!!!
posted on January 9, 2019 
ALGEBRA HELP #3
Part A: (3,1) Part B:(0,5) (1, 3) Part C:(1,3) because they intersect at that point
posted on December 15, 2018 
Math
4.3
posted on December 1, 2018 
bussness, if that's even a subject
um.... reed you need to calm down and stop being so ignorant. Sueme asked for help if you cant help, don't comment. it's just that simple.
posted on April 11, 2018 
math
daaaaaaa hola is 52
posted on March 12, 2018 
homework
56m
posted on March 7, 2018 
math
21/8
posted on March 2, 2017 
physics
v= the square root of 2gh
posted on January 8, 2017 
Biology Check answers
Which of the following best describes what happens to an enzyme after it catalyzes a chemical reaction? Is the answer to that question correct?
posted on September 26, 2016 
physics
sqrt(2x760)/9.8 = 12s
posted on May 25, 2016 
Chem 1411
al3n2
posted on April 1, 2016 
V/CV OR VC/V PATTERN
vfddswWQ
posted on February 18, 2014 
chemistry
moles of urea:16(g)/60(g/mol)=0.267(mol) 39(g)*1(kg)/1000(g)=0.039kg m=0.267/0.039=6.846(mol/kg)
posted on March 18, 2013 
4th grade Math
how much did maria bean plant grow between day 2 and day 3?
posted on November 9, 2011 
math elementary
how much did maria bean plant grow between day 2 and day 3
posted on November 9, 2011 
Physics
23m/s
posted on June 9, 2011 
Chemistry
How many moles of a gas at 100 degrees celciuos does it take to fill a 1.00L flask to a pressure of 1.50 atm?
posted on November 19, 2010 
Algebra
Whoops and one thing I forgot. Is it allowed for a parobala to open upward and have the directrix intercept it? Since p is greater than zero, it would have to open upward, but then the directrix would intercept the parobala (the directrix follows the x
posted on November 30, 2008 
Biology
I'm sorry, I don't think that's the answer. I believe it's only one word, and it's one of the organelles in the cell. Thank you for answering, but is there any one word organelle that you think might be the answer?
posted on March 18, 2008 
Biology
Thank you. This was very helpful.
posted on March 18, 2008 
speed of light
please answer the question my physics homework is due tomorrow XD
posted on August 29, 2007