Tania
Popular questions and responses by Tania
Precal
The number of people in a town of 10,000 who have heard a rumor started by a small group of people is given by the following function: N(t) = 10,000/(5 + 1245e.97t) 14. How many people were in the group that started the rumor? 15. How many people have
asked on November 5, 2015 
Physical science
Find the acceleration of a hamster when it increases its velocity from rest to 10 in 2.4
asked on June 11, 2013 
Physics
A hotair balloon is rising vertically at a speed of 10 m s–1. An object is released from the balloon. The graph shows how the velocity of the object varies with time from when it leaves the balloon to when it reaches the ground four seconds later. It is
asked on February 16, 2011 
Chemistry
2C6H14+19O2 (Arrow)12CO2+14H2O 99.01 g of CO2=..........mol of O2? 188.73g of O2=..............g of C6H14?
asked on November 8, 2017 
Math
The perimeter of a rectangle is 60cm. It's length is 6cm. What is its width?
asked on December 11, 2014 
physics
An athlete runs from one end to the other end of a semicircular track whose radius is 70m. What is the total distance covered by the athlete and what is his displacement?
asked on June 26, 2014 
science..physics
An athlete runs from one end to the other end of a semicircular track whose radius is 70m.what is the total distance covered by the athlete and what is his displacement?
asked on June 26, 2014 
math
the lenght of a rectangular room is 6 feet longer than twice the width. If the room's perimeter is 132 feet, what are the room's dimensions?
asked on October 22, 2013 
eco
2. It has been estimated that the price elasticity of demand for attending baseball games is 0.23. Other things held constant, a 10 percent increase in attendance can be explained by a: A. 43.48 percent fall in the price of a ticket. B. 43.48 percent rise
asked on March 10, 2013 
math
show 2 ways of using the distributive property to find the product of 125 times 32
asked on January 18, 2013 
math
A student says that a 98% angle has a complement Explain why this is incorrect?
asked on March 14, 2012 
Chemistry 11 grade 
Hydrogen gas was collected in a gascollecting bottle with a volume of 30.0 mL by water displacement on a day where the temperature was 24ºC and the barometric pressure was 98.125 kPa. The vapour pressure of water at 24ºC is 2.99 kPa. What would be the
asked on April 15, 2015 
math help!
f(x) is a quadratic function such that f(1) = 3 and f(5) = 3. Find the x coordinate of the vertex of the graph of f.
asked on March 19, 2014 
economics
1. If average movie attendance is 250 million when prices are $7 a ticket and 200 million when prices are $9 a ticket, the elasticity of demand for movie tickets is about: A. 0.0. B. 0.9. C. 1.1. D. 1.8.
asked on March 10, 2013 
math
Can anyone please help me with the following question: Prove by mathematical induction that 6^n + 4 is a multiple of 5, for nEN.
asked on August 22, 2011 
Chemistry
The gaseous product of a reaction is collected in a 25 L container at 27 degrees Celsius. The pressure in a container is 300 kPa and the gas has a mass of 96 g. What is the formula mass of the gas?
asked on February 23, 2011 
Calc.
Solve the initial value problem explicity: y'= 5xe^(y), y(1)=1
asked on February 2, 2011 
Calculus
Solve the following initial value problem explicitly: y'= ye^x , y(0)=1 How do you solve this problem? I'm really confused!
asked on February 2, 2011 
Calculus
Ba has a halflife of 283.2 hours. How long would it take for the 50 mg of Ba in a sample to decay to 1.0 mg?
asked on February 2, 2011 
PreAlgebra
help me calculate this  my 6th grade nephew has this question for homework and I'm at a loss. The combined age of 2 people is 91. Person A is two times as old as Person B was when Person A was as old as Person B is now.
asked on October 1, 2007 
Climate Change
In a Business 'As usual senario,' global CO2 emissions reach 64 GtCO2 y 1 by 2050. Convert this figure to GtC y1, and calculate the percentage increase from the level of global CO2 emissions in 2004, estimated as 8.8 GtC y1. Lets see... carbon is what
asked on June 13, 2007 
Math
In the simplest fraction, what part of 4 yd cubed is 3 ft cubed?
asked on March 20, 2019 
Algebra
If Anne’s age is represented by the variable a then express Jenny’s age in terms of a if Jenny is three years less than half of Anne’s age
asked on February 25, 2018 
Math
Sandy is buying tshirts for her school's club. Company A charges 5.80 per shirt with no set up fee. Company B charges 5.75 per shirt plus a $35 set up fee
asked on December 11, 2014 
Math
The temperature increased 56 in 4 hours , what was the change in temperature per hour
asked on December 11, 2014 
Math
Malik is 10 years less than half his mothers age. I Malik is 12 years old, how old is his mother
asked on December 11, 2014 
science
What are psychoanalytical models? How have these models been used to explain human behavior? Which model do you feel is the most effective in explaining human behavior? Why?
asked on April 17, 2014 
psy/310
What are psychoanalytical models? How have these models been used to explain human behavior? Which model do you feel is the most effective in explaining human behavior? Why?
asked on April 16, 2014 
math
Katepoured 8 ounces of juice of a 64 ounce bottle Brian poor 60 ounces of juice from a 128 ounces bottle what ratio of juice is missing from each bottle of the ratios proportional
asked on January 29, 2014 
Math
Find the perimeter of KRN if K(2,9), R(5,3), and N(0,7). round to the nearest tenth.
asked on August 27, 2013 
math
There are 10 cups of punch left in the punch bowl. Each glass holds 2/3 of a cup.how many glasses can you fill?
asked on December 13, 2012 
wilson school
the flag that nico waves has an odd number in the one place and an even number in the tens place
asked on November 26, 2012 
Math
if $15,000 is invested at 6%, compounded quarterly, how long will it be before it grows to $25,000?
asked on June 28, 2012 
information literacy
Which of the following sets of Library of Congress call numbers is in the correct order? A. PA 203 .B252 1971, P201 .A251 1977, PE205 .C253 1954, PH202 .H255 1965 B. P201 .A251 1977, PA 203 .B252 1971, PE205 .C253 1954, PH202 .H255 1965 C. PE205 .C253
asked on June 22, 2012 
information literacy
3. Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 B. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L45, E88 G62 L166 1995 C. E88 G2512 S57 1998, E88
asked on June 21, 2012 
chemistry  science
calculate molarity of NaOHin the solution prepared by dissolving its 4g in enough water to form 250ml of this solution ?
asked on February 17, 2012 
high school
(x^2y^3/2z)^4
asked on September 11, 2011 
geometry
Ab=5 what's the reason ? Ch 2.6 segment proofs
asked on September 8, 2011 
Math
Iam reposting the following questions and would appreciate if anyone could show the working. 1]Find lim sinx/2x x>0 2]lim 3x^24x/7 x>0
asked on August 22, 2011 
Math
Please help me with the two given questions. 1] find lim 3x^24x/7 x>0 2] lim sinx/2x x>0
asked on August 22, 2011 
life orientation
in 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community
asked on April 18, 2011 
French
How would you say Ash Wednesday and Easter in French? My French teacher said it today, but I just can't recall what it was now...
asked on March 9, 2011 
physics
A system of pulleys is used to lift an elevator carrying a 3,300 newton load. assuming the pulley system is friction free, approximately how far would 10,000 joules of energy lift the elevator?
asked on February 22, 2011 
Physics
A braking system is used to prevent the car travelling faster than 27 m s–1.The car and passengers shown in the diagram have a total mass of 750 kg. The length of track from P to Q is 80 m. Calculate the average braking force that would be required if
asked on February 16, 2011 
Physics
The work done against a force F(r) in moving an object from r = r1 to r = r2 is integral F(r) dr limits R2 at top and r1 at bottom. The gravitational attraction between two masses m1 and m2 at distance d is given be F=GMM/d2, G = 6.67 x 1011. Find the
asked on January 12, 2011 
Mathematics
You can either do your own yard work or you can pay someone to do it for you. You find that it takes you about 50 minutes to clip, mow, and otherwise clean up your yard each time you do it. You do it four times each month. Also, once a month you need to
asked on September 7, 2010 
Math
Time and money are always significant. Look at this scenario. You can either do your own yard work or you can pay someone to do it for you. You find that it takes you about 50 minutes to clip, mow, and otherwise clean up your yard each time you do it. You
asked on September 7, 2010 
math
what is the maximum possible nuber of intersection beetween an equalateral triangl and a circle in the same plne?
asked on May 7, 2009 
ecology
true or false, the temp. varies greatly throughout the year in a tropical rain forest?
asked on October 29, 2008 
ecology
true or false, the temp. varies greatly throughout the year in a tropical rain forest?
asked on October 29, 2008 
biology
What phrase does the polypeptide spell? There appears to be some letters missing from the phrase
asked on October 29, 2008 
11 grade world history
what leisure activities flourished at the turnof the 20th century
asked on October 19, 2008 
English Debating
We have a debate about "That if we buy New Zealand made, we've got it made". we are negating this topic but don't know what to talk about. please help !! thanks
asked on April 28, 2008 
Chem Help!
I really need help for my homework on balancing equations please show all the work including the coeffients if needed. I need help with 3 questions, 1) NaN3 > Na + N2 2) NO2 + O2 > NO + 03 3) LiOH + CO2 > Li2CO3 + H2O
asked on March 15, 2008 
English
Dangling Modifiers
asked on May 2, 2007

math
i need help on homework
posted on November 16, 2018 
Math
Alexis bought x boxes of cereal for $3 each, including tax, and paid with a $20 bill. Which expression represents the total amount of change she should receive?
posted on August 31, 2017 
social studies
The answer is c. 20 percent
posted on March 8, 2016 
Math
Yeah it does
posted on December 11, 2014 
Math
Yes I do I don't get it
posted on December 11, 2014 
Physics
A ball is thrown horizontally fron the roof of a building 7.5 tall and lands 9.5m from the base. What was the balls initial speed?
posted on November 24, 2014 
math help!
help ASAP PLEASEE!
posted on March 19, 2014 
chemistry
¹14 is 1.42e9, 2.36e10 ¹15 is 7.23e11, 2.48e11 ¹16 is 6.89 ¹20 is structure A, decrease, increase Zm is wrong ¹29 is branched structure, branched structure, Linear, because the branches can become more entangled than the linear chain.
posted on December 22, 2013 
chemistry
9a is LiF
posted on December 22, 2013 
Chemistry
V1/T1=V2/T2 75+273.15=348.15 25+273.15=248.15 822/348.15=v2/248.15=586 No, it is not correct because your final answer cannot be a negative answer. :)
posted on May 19, 2013 
economics
yes
posted on March 10, 2013 
Biology
population
posted on March 6, 2013 
Math
Thank you drwls!!!
posted on August 22, 2011 
Health Project Ideas
do it on phobias..its unique
posted on November 29, 2010 
English
Why is mr krabs caring about money than caring about the children?
posted on January 27, 2010 
Algebra 2
I have the same question. For what value is this equation undefined? and Do the answers to sections ad match your expectations? why or why not? I'm confused on how to answer this. Please help anyone! Thank you!
posted on January 25, 2010 
Science
Make a hypothesis about how spacecraft that travel throughthe solar system obtain the energythey need to operate?
posted on November 8, 2008 
social studies
the egyptians stuffed the nostrils with beeswax durig the mummification process
posted on January 30, 2008