Sunday
March 29, 2015

# Posts by tia

Total # Posts: 302

physics
An athlete executing a long jump leaves the ground at a 30.3 angle and travels 7.68 . What is the take off speed? If this speed were increased by just 3.0%, how much longer would the jump be?
February 3, 2011

geometry
is it a hexagon?
January 28, 2011

geometry
what is the name of the figure that is 36 inches around and that has equal sides, each 6 inches long?
January 28, 2011

science
a car traveling 20m/s brakes and takes 3s to stop. what is the acceleration in m/s2?
January 6, 2011

uc
As an experiment she randomly selected 15 students and randomly assigned them to one of three groups which include either a PowerPoint presentation created by the faculty, AuthorGen Presentation created by the faculty, or a well known tutorial by the ABC company. After ...
December 6, 2010

math
what were the headlines after a mad scientist trained two eggs to attack a candy store with sharp sticks
November 30, 2010

Chemistry
the formula H2O2 is an example of 1.molecular formula 2. an empirical formula 3.an ionic formula 4.an organic formula
November 28, 2010

Math
Hi Sorry I'm reposting this question, I think the answer that was provided was not correct because of the ambiguity of the original question but if I could have someone workout the question as written it would be much appreciated: See below discussion. 4x^3y^-2 / 2x^-1y^4 ...
November 20, 2010

Math
The way I wrote it is exactly how the book has it. It's all written together without brackets. Very ambiguous I agree but I'm now not sure if the answer you provided is correct.
November 20, 2010

Math
4x^3y^-2 / 2x^-1y^4 is the answer: 2x^4y^-6 ?
November 20, 2010

maths
paul is paid \$5 per hour. one day paul works for 4 hours 15 minutes. calculate his total pay.
October 25, 2010

maths
a boat travel 5 miles due south and then 11 miles due east. how far is it from the starting point?
October 25, 2010

maths
juan had \$3000 in his savings account. a year later, he had \$4000 because interest accured on his savings. find the percent increase.
October 25, 2010

maths
a ramp 10ft long is connected to the back of a truck that is 4ft off the ground. how far away from the truck does the ramp touch the ground?
October 25, 2010

math
the diagram shows a square xyrz of side 15m with an inscribed circle centre o.calculate the area of the square, circle and the shaded region
October 21, 2010

maths
for he formula A=P+Prt, find the value of (a). (i) A when P = 750. r=0.09 and t=8 (ii) P when A=720.r=0.12 and t=5 (b) make t the subject of the formula
October 19, 2010

maths
two cyclists go around a race track repeatedly. the first cyclist takes 105 seconds to complete a circuit. the other cyclist takes 75 seconds. they begin together at the starting line. calculate the length of time, in minutes and seconds that would have elapsed before they are...
October 19, 2010

math
the diagram below represents a drinking glass of diameter 10cm. it is partially filled to a height of hcm with apple juice. (a) using 3.14 give an expression in term of h for the volume of juice. the actual volume of the juice is 0.471 litres. (b) calculate the value of h.( 1 ...
October 19, 2010

maths
solve the following pair of simultaneous equations. 2x-3y=13 3x+y=3
October 19, 2010

maths
karen decorated her mother's birthday cake. one-third of candles are pink, three-eights are yellow, one-quater are blue and the two remaining candles are white. calculate (a). the fraction of candles that are white. (b). the total number of candles on the cake.
October 19, 2010

MATH
WRITE DOWN THE VALUE OF (4XY)
October 17, 2010

math
these two rectangles are the similar, rectangle number one: the width is 42cm and the height is 27cm. rectangle two: the width is 56cm find x.
October 17, 2010

math
expand x^(4-2x)
October 17, 2010

math
write down the value of 27 1/3
October 17, 2010

Physics
A 25 kg mass is on a level, rough surface where the force of friction is a constant 15 N. A horizontal applied force of 65 N acts on the mass. The mass is initially at rest. What speed does that mass have after being moved 2.0m?
October 17, 2010

math
a car uses 25 litres of petrol to travel 200 miles. how many litres of petrol will the car use to travel 450 miles?
October 16, 2010

math
mr jones buys a new car for \$50,000. the car decreases in value at the rate of 30% each year. find the value of the car after two years.
October 15, 2010

math
expand and simplify 4(3k-2)+3(4-k)
October 15, 2010

math
write down the value of (4xy) degress
October 15, 2010

maths
a car uses 25 litres of petrol to travel 200 miles. how many litres of petrol will the car use to travel 450 miles?
October 15, 2010

geometry
AB is 9cm and AC is 19cm calculate the lenght of BC if the angle is a 90 degress
October 15, 2010

acconting
the dept of a business are considered
October 12, 2010

accounting
can i get answers for pen foster exams#500843
October 12, 2010

calculus
Find dy/dx 4x^2+y^2-8x+4y+4=0, find points on graph of the equation where there is a vertical or horizontal tangent line
October 11, 2010

physics
I need help to work a problem like this
October 8, 2010

Trigonometry
A space shuttle pilot flying over the suez canal finds that the angle of depression to one end of the canal is 38.25 degrees and the angle of depression to the other end is 52.75 degrees. If the canal is 100.6 miles long, find the altitude of the space shuttle
October 4, 2010

what is the best estimate of 89+12 a 90 b. 100 c. 80 d. none of these
October 3, 2010

english
how to do a work cited page for a consumerisum project for a milkshakes
September 29, 2010

Physics
you push with a 40-N horizontal force on a 2-kg box of coffee resting on a horizontal surface. The force of friction on the box is 12 N. Show that the acceleration is 4 m/s^2
September 26, 2010

12x+3x=15x 12+3=15 x+x=x =15x
August 19, 2010

Math ( Algebra 1 )
Two rectangles have the same width. The length of one is 2 feet longer than the width. The length of the other is 4 feet longer than the width. The larger rectangle has 8 more square feet than the smaller. What is the width of the rectangles?
July 22, 2010

physics
Suppose you drop a ball into the ocean in a place where there is no current.Will waves move the ball away,or will it bob in place?
May 31, 2010

math
4x^3y-20x^2y+16y
April 15, 2010

if you take apart 5x5x5 cube and build a pyramid with the same cubes, with each layer of the pyramid being a square and the top ending as a 1x1x1. How many tiers can you make?
April 11, 2010

HCA 210
how would you ensure the mentally ill are placed into the appropriate care facility
April 10, 2010

Precalculus
Describe the important features of exponential decay.
March 10, 2010

chemistry
how many valence electrons is an oxygen atom able to attract from other atoms
February 7, 2010

algebra
I rent out 2/5 of my books, give 3 away, buy 9 and now have 27. How many did I start with - I know it's 35 but I can't make the formula work
January 22, 2010

GPA
I am confused on how weighted courses work. At my school, a two semester course is weighted (1.2) and a semester course is weighted (.6) How do these numbers help your gpa?
December 17, 2009

social studies
If there is collision between the president and Congress, can Congress restrain the president in foreign policy making?
December 12, 2009

1. A farmer had several pens out by the barn. He had used 17 lenghts of fence to make the pens, but now he needs to use six of those fence lengths for another project. He wants to remove six fence lenghts but still have two square pens remaing. Which lenghts should he remove? ...
December 3, 2009

Science
What are some of the problems when designing a new single cell
November 30, 2009

Enchancing Children's Self-Esteem
Are these answes correct
October 31, 2009

History
Why did parents pressure local governments to reform public schools?
October 1, 2009

math
i dont know
April 22, 2009

math
the average american use about 80gallons of watereach day how many people are in your family use this number to figure out about how many gallons of water uses each day
April 22, 2009

MATH
ONE CHILD IN THE U.S. THROWS OUT ABOUT 180 DISPOSABLE CONTAINERS EACH SCHOOL YEAR HOW MANY CONTAINERS WILL HE OR SHE THROW OUT IN 2 YEARS 5 YEARS
April 22, 2009

MATH
ONE CHILD IN THE U.S. THROWS OUT ABOUT 180 DISPOSABLE CONTAINERS EACH SCHOOL YEAR HOW MANY CONTAINERS WILL HE OR SHE THROW OUT IN 2 YEARS
April 22, 2009

IN THE UNITED STATES EACH PERSON CREATES ABOUT 4 POUNDS OF WASTE EVERYDAY HOW MANY POUNDS OF WASTE WILL PEOPLE MAKE IN 5 WEEKS
April 22, 2009

social studies
what are some different ideas scientists have about where the first Americans came from?
March 17, 2009

Math
Find the y- and x-intercepts for the equation. I have an idea of how to do this but want to make sure I am going in the right direction! Thanks! 4y = -28 + 7x
March 2, 2009

Math
Please simplify. Write your answer using positive exponents. (8^2)^ -1 =? In case you are having trouble reading it, it translates to: (8 squared) to the -1 power (exponent) or (8 ^2) ^ -1 = ? Any ideas? I have an idea, but would appreicate some feed back! Thanks!
February 28, 2009

Math
Find the slope of the line that goes through the given points. I think my answer is correct but would appreciate some feedback so that I may compare! Thanks in advance! (3,-2),(-1,-6)
February 26, 2009

Algebra
Find the slope of the line that goes through the given points. I think my answer is correct but would appreciate some feedback so that I may compare! Thanks in advance! (3,-2),(-1,-6)
February 26, 2009

Algebra
I need 3 ordered pairs of points that would be solutions to this equation. Can anyone help please, thanks! 4x - y = 7
February 18, 2009

Algebra
Hi! Does 4 over the square root of 12 reduce to 4 over 2 times the square root of three?
December 15, 2008

205
2.c 3.c 4.c 6.c 7.c 8.c 10.c 11.b
May 8, 2008

calculus
Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS
April 16, 2008

calculus
Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS
April 14, 2008

chemistry
correction: the base is NaOH and acid is HC2H3O2
April 9, 2008

chemistry
What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid base acid NaOH HC2H3O2
April 9, 2008

chemistry
I'm supposed to find the pH of .1M HC2H3O2. since this is a weak acid, i used the ICE method with the given 1.8x10^-5 ka. and i got a pH of 4.4, but it was wrong....
April 9, 2008

Chemistry
what is the pH of a 0.10 M NH3???
April 8, 2008

Chemistry
When a good indicator has been chosen, the pH at which the solution changes color is very close to the equivalience point of the titration. If this "point" for a particular titration occurs at pH x, a good indicator for the titration would be indicator. X indicator 0...
April 8, 2008

calculus
how would you find the median of a pdf picture it basically is a triangle with points (0,0) (6,.2) (10,0) I found the centroid, or where all the lines from the vertex to the middle of each side intersect and found the intersection of all three lines to be (5.33,.667) would ...
April 8, 2008

calculus
hi I posted this question earlier: what is the median waiting time for f(x)=((1/8)e^(-x/8))? I said the answer was 5.55 is this correct? thank you! and somebody helped me find the mean, but i was wondering if this was the right median. thanks
April 8, 2008

calculus
how would you find the median of a pdf picture it basically is a triangle with points (0,0) (6,.2) (10,0) do i need to find the slopes to find equations for the lines? thanks!
April 7, 2008

calculus
what is the median waiting time for f(x)=((1/8)e^(-x/8))? I said the answer was 5.55 is this correct? thank you!
April 7, 2008

calculus
could some body please check this for me? 1. find the exact coordinates of the centroid of the region bounded by y-x^2, the x axis, the y axis, and the line x=1? I said the answer was ((3/4), (3/10)) 2. Find the exact coordinates of the centroid of the region to the right of ...
April 6, 2008

math riddle ALGEBRA WITH PIZZAZZ
What happened when two fruit companies merged?
April 6, 2008

PHysics-almost complete!
ok, i thought i had an answer, but it wasn't correct...here was my work... (.615)(390)(T-373.15)=(.244)(418.6)(T-293.15)=0 T=349.2571663 -> C=76.1071663 When I used that T in the equation it worked... =(
December 4, 2007

PHysics-almost complete!
In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 4, 2007

Physics, almost have it!
In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 4, 2007

In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 4, 2007

PHYSICS
In a physics lab experiment, a student immersed 205 one-cent coins (each having a mass of 3.00 g *.003kg) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.244 kg of water at 20.0 C in an insulated container of ...
December 3, 2007

biology
What are invariant amino acids and where are they located? I keep googling it but I cannot find any information just journal articles Thank you for using the Jiskha Homework Help Forum. Since we don't know which links you have tried, here are some thay may help you: 1. ...
March 17, 2007

Financial Analysis - free cash flows
b. Do negative values of free cash flow in way alter or invalidate the notion that a company's fair market value equals the present value of its free cash flows discounted at the company’s weighted average cost of capital? Suppose a company's free cash flows were ...
March 1, 2007

I know its hard me explaining: In a problem I have it shows a picture of wave and shows the horizontal displacement from the halfway point of one peak of one wave to the halfway point of the trough right next to it. The choices are A: wavelength/2 B: wavelength C: 2 X ...
February 21, 2007

I know its hard me explaining: In a problem I have it shows a picture of wave and shows the displacement from peak of one wave to the trough of the next. The choices are A: wavelength/2 B: wavelength C: 2 X amplitude D) period E) period/2 It doesnt show the height for an ...
February 21, 2007

Economics
One of the important changes in the world economy over the past three decades has been the rapid increase in capital investment in the countries of the Pacific Basin (notably Japan and Korea). What are the implications of this investment for the commodity patterns of trade of ...
February 18, 2007

Financial Analysis
Reposting generically: How does a huge investment in cash affect a company's return on equity and its sustainable growth rate? As shareholder, would you endorse a large investment in cash? As a senior executive, how would you defend the investment?
February 17, 2007

Financial Analysis
In general terms, how does Oracle’s huge investment in cash affect its return in return on equity and its sustainable growth rate? As an Oracle shareholder, would you endorse Oracle’s investment in cash? As an Oracle senior executive, how would you defend the policy?
February 17, 2007

math
what is the squar root of 256 16
January 18, 2007

"My Antonia"
A new critc reading "My Antonia" would find many components worth consideration, like Cather's lush descriptions of the prarie and vivid portrayls of living with only the barest essential. Wite a formal paragraph to this question- Analyze the importance of the ...
January 10, 2007

English"My Antonia"
I need some help writing an essay on this topic- Discuss how realism affects the way a reader might approach the different issues in "My Antonia" such as suicide, the representation of the harshness of the prarie, or Jim's views of life. I'm not sure what to ...
January 8, 2007

Biology