Friday
October 21, 2016

# Posts by lily

Total # Posts: 1,448

science help
correct
January 13, 2016

Math
a particle moves along x-axis so that its position at any t>=0 is given by x=arctant. What is the limiting position of the particle as t approaches infinity?
January 11, 2016

Spanish
Preterite or imperfecto- pls check Los estudiantes ( tomaban/ tomaron) apuntes mientras la profesora ( hablaba/ hablo) Answers: tomaban and hablo
January 6, 2016

Math
Maddy’s loaf tin has three partitioned areas in which to bake three loaves. The outside of the tin along with the partitions is made of 80 inches of material. The area of the entire loaf tin is 192 in2. What are the possible outer dimensions of the loaf tin?
December 16, 2015

Physics
Take the mass of the Earth to be 5.98 × 1024 kg. If the Earth’s gravitational force causes a falling 44 kg student to accelerate downward at 9.8 m/s2, determine the upward accelera- tion of the Earth during the student’s fall. Answer in units of m/s2.
December 16, 2015

Physics
The average speed of an orbiting space shuttle is 19700 mi/h. The shuttle is orbiting about 125 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the earth? Answer in units of h.
December 10, 2015

Physics
A jogger runs in a straight line with an average velocity of 5.4 m/s for 2.3 min, and then with an average velocity of 5.7 m/s for 1.2 min. What is her total displacement? Answer in units of m.
December 10, 2015

Physics
Two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force of 363 N to the right. If they pull in opposite directions, the raft experiences a net external force of 147 N to the left. Draw a free body diagram ...
December 10, 2015

Math
A commuter has 245 dollars in his commuter savings account. this account changes by -15 dollars each week he buys a ticket. In one time period, the account charged by -240 dollars. For how many weeks did the commuter buy tickets How much must he add to his account if he wants ...
December 10, 2015

Physics
Suzie (of mass 84 kg) is roller-blading down the sidewalk going 34 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in 1.1 seconds. What is Suzie’s average acceleration? Answer in units of m...
December 10, 2015

Physics
A force is applied to a 1.4 kg mass and pro- duces 2.5 m/s2 acceleration. What acceleration would be produced by the same force applied to a 12.2 kg mass? Answer in units of m/s2.
December 10, 2015

English
has anyone taken the red badge of courage unit test? I really need help! Thanks!
December 10, 2015

Science
Guys do your own work. When you get into college and you don't know anything, don't say we told you so.
December 7, 2015

Math
An artist mixes blue and yellow to make a shade of green. The ratio of blue to yellow is four to one. The color blue makes up what fraction of the mixture?
December 2, 2015

Math
One-quarter of a bread recipe calls for 2/3 cup of bread flour. How many cups are needed per recipe?
November 22, 2015

Math Asap
@steve so it would be a integer
November 18, 2015

Math Asap
When adding √9 and -7, which type of number is the sum? A.irrrational B.whole number C.radical D.integer My answer is A. CAN you check please @Ms.Sue
November 18, 2015

Biology
How does chloroplasts move when placed in a different solution? I understand that chloroplasts are just randomly scattered through out the cytoplasm, but what does placing the cell in a different solution that can be hypotonic or hypertonic affect the placement of chloroplasts?
October 24, 2015

CHEM redox equations help!
I think theres a mistake in the book its supposed to be C2O4^2-. and it says it says the answer's supposed to be 2MnO4^- + 3C2O4^2- + 4OH- => 2MnO2 + 6CO3^2- + 2H2O but I didn't get that.
October 22, 2015

CHEM redox equations help!
MnO4 ^- + C2O2 ^2- = MnO2 + CO3 ^2- how would you balance this in basic solution? I keep getting the wrong answer.
October 22, 2015

Educational Technology.
Yup, right.
October 22, 2015

Chemistry
Name the organic product of the following nucleophilic substitution reaction OH-+CH3I
October 18, 2015

math probability question
If a player rolls 2 dice and gets a sum of 3 or 11 he collects \$15. if he gets a sum of 12 he gets \$3. the cost to play the game is \$2. let x be the net money gained by the player. a. construct the prob distribution of the random variable x b. find the expected net/gain loss ...
October 14, 2015

Social Studies
Oh yeah, B?
October 1, 2015

Social Studies
1. The climate along the equator in Africa is ____. A. hot and dry B. hot and wet** C. wet and dry D. cold and dry 2. What is one way that people have changed the environment in parts of West and Central Africa? A. They have made all land arable. B. They have cut down trees ...
October 1, 2015

Social Studies
Ooh...so 1 is a savanna?
October 1, 2015

Social Studies
Okay is 1. grasslands?
October 1, 2015

Social Studies
1) A fairly dry area between the Sahara Desert and the wetter regions to the south is the ___. A. savanna B. Sahel C.grasslands D. Congo ^ Is it D, Congo? 2. Which African climate zone is home to the savanna? A. tropical wet B. tropical wet and dry C. semiarid D. arid ^Is it C...
October 1, 2015

Social Studies
NVM! IT’S C
September 23, 2015

Social Studies
2) An econmy’s total output divided by the total population is called: a- gross national product b- circular flow** c- GDP per capita d- net export
September 23, 2015

Math
Hi! I need help with this question: Directions: Find the rest of the answers for the table and then find the estimate for it's limit. Problem: lim x→0 cos(3x-1)/3x Table: (top row) -0.1, -0,01, -0.001, 0.01, 0.1 (trying to find what the bottom would be for f(x) row.
September 22, 2015

Algebra 2
Can someone explain this exponential expression problem to me please? (3x/y^3)^-3 So I got the answer (1/27x^3)/ 1/x^9. Is this correct and if not where did I go wrong?
September 17, 2015

physics
A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 29.0 m. Next, the student stands at the edge of the pool and uses a ...
September 16, 2015

Thank you so much! That really helped!
August 25, 2015

math
If x + y + z = 26, find the value of (y-2) + (z+3) + (x-3). I was so confused on this question and didn't even know where to start. Please help me!
August 25, 2015

Math
would it be 21?
August 24, 2015

Math
the sum of 6 and 4 times a number (n) equals 90
August 24, 2015

Social Studies
okay so muscogee right?
August 23, 2015

Social Studies
which of the following georgia counties is most likely to experience a direct hit of a hurricane? dooly, muscogee, or dade
August 23, 2015

Social Studies
okay thank you!!!1
August 23, 2015

Social Studies
or southwest?
August 23, 2015

Social Studies
is georgia to florida southeast?
August 23, 2015

Social Studies
georgia to florida northeast? georgia to tennessee southwest? georgia to texas southwest? georgia to colorado northwest?
August 23, 2015

Social Studies
what general direction would you travel to go from georgia to florida? georgia to tennessee? georgia to texas? georgia to colorado?
August 23, 2015

how many seasons are in a school year
August 19, 2015

Science
medals like an olympic metal
August 18, 2015

Science
what are the effects of oxygen on medal.
August 18, 2015

Algebra
Suppose f is a polynomial such that f(0)=47, f(1)=32, f(2)=-13, and f(3)=16. What is the sum of the coefficients of f?
July 28, 2015

math
How do you find the area and perimeter of your room floor?
July 28, 2015

kempston
i spent 1/4 of my money in one shop and 1/3 of my money in another shop. what fraction was left?
July 21, 2015

Organic Chemistry
Consider the weak organic base n-propylamine. The Kb value for this base is 1.3-10^-5, and its pKa is 10.6. At what pH are the "proton on" and "proton off" forms present in equal concentrations? At what pH values would the "proton on" form have ...
July 19, 2015

Math
Tiffany is constructing a fence around a rectangular tennis court. She must use 300 feet of fencing. The fence must enclose all four sides of the court. Regulation states that the length of the fence enclosure must be at least 80 feet and the width must be at least 40 feet. ...
July 2, 2015

Math
The area itself consist of length x width. The formula for a rectangular prism is length x width x height . So , the question already give you all the hints and you just have to multiply all of them ; 25 x 10 = 250
June 24, 2015

Chemistry
Electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. So the number of electron must be 15 , right ? But , what if m = 1 ? Does it effect the number of electron ?
June 23, 2015

math
What number is the sum of 8 numbers whose average is 13
May 31, 2015

Math
Is \$5.00 enough money to buy 1 pound of peanut
May 21, 2015

Math
Finish the following to make a perfect square. 1.) x^2+sqrt3x+______ 2.) x^2+4x+_____
May 19, 2015

Math
A Voting Poll: Candidate A: 30% Candidate B: 50% Undecided: 20% The Table above summarizes the results of an election poll in which 4000 voters participated. In the actual election, all 4000 of these people voted and those people who chose a candidate in the poll voted for ...
May 18, 2015

Math
Ok, or I could find the slope correct? Thank you!
May 18, 2015

lanugage
that wasn't my intention. um sorry
May 14, 2015

lanugage
what is the prepositional phrase in the sentence? The family drove to the store. a. the family drove b. drove to the store c. the family d. to the store a?
May 14, 2015

Social Studies
Okay thank you
May 13, 2015

Social Studies
what is the problem with arabia and iraqs dependency on oil?
May 13, 2015

ss
why was the migration of the Aryans to India significant
May 13, 2015

Social Studies
Farmers in the northern Indo-Gangetic plain of south Asia rely mostly on: A. Water carried by rivers that drain from the Himalayas B. Cool air that brings drenching rain C. Monsoons that bring needed moisture D. Desert wind that balances the cold moist air from the Himalayas A?
May 13, 2015

Math
How would you factor (x+y)^2-(x-y)^2
May 12, 2015

analytical chemistry
In generating the synchronous spectrum, it is not necessary to specify the wavelength range, why?
May 12, 2015

Science
How do two tissue types work together to improve organ function
May 7, 2015

Social Studies
What are the causes of the water pollution that threaten South Asia today? overpopulation, growing cities, damming of rivers, and the need for more irrigation burning down of forests, building of new factories, and more cars the use of major rivers in religious festivals ...
May 6, 2015

Math
How do you find the quadratic equation, in standard form, that has the roots x= (2±√5)/3
May 5, 2015

Math
Apply the following transformations to this parabola. Y=2(x+3)^2-1 A) reflection in the x-axis, followed by a translation 5 units down. I got : y = -2(x+3)^2-6 But the answer is y= -2(x+3)^2-4 Why is it -4 And also. How odd you do reflections in the y axis without drawing the ...
May 5, 2015

Math
Determine one of the zeros of the quadratic realtion: y=(x-(k/2))^2-[(k-2)^2/4] I tried to do this by expanding and got to y=x^2-mx-k+1 How are you suppose to do this
May 5, 2015

Math
A tangent is a line that touches a circle at exactly one point. For what values of k will the line y= x+k be tangent to the circle x^2+ y^2 = 25? I know I'm suppose to use the properties of a discrimminate. But how
May 4, 2015

Math
in the relation y=4x^2+24x-5, for which values of y will the corresponding equation have no solutions The answer is y<-41. But I got that y>656 by using d=b^2-4ac
May 4, 2015

Math
The equation x^2 + k = 6 x has two distinct real roots. Find the range of values of k. I know that you do 36 -4k > 0 -4k > -36 k < 9 But I don't get why you switch the signs. So. When do u switch signs
May 4, 2015

Socials
With your descriptions, yes the Canadian government was very similar to American governments.But how do they negotiate?
May 4, 2015

Socials
I am writing an essay for socials and the topic is: To what extent was the treatment of First Nations by the Canadian government justified? So far, I plan to explain both sides but lean more to the unjustified side(2 body paragraphs on that). My points are: the treaties and ...
May 4, 2015

education
Just want to know what these questions are asking for. thanks What view do you have of the children's skills and competencies? In what ways do you need to transform your view of children to see them in a more positive light? what skills do you want to strengthen in ...
April 25, 2015

Language Arts
1. b 2. a 3. d 4. c
April 17, 2015

socialstudies
April 14, 2015

science PLZ HELP
Just took the practice, these are the answers. In this order 1 - 14. 1. A 2. B 3. A 4. B 5. C 6. C 7. A 8. B 9. C 10. A 11. B 12. A 13. B 14. A [true]
March 31, 2015

math
In quadrilateral QRTS, we have QR = 11, QS = 9, and ST=2. Sides line RQ and line ST are extended past Q and S, respectively, to meet at point P. If PS = 8 and PQ = 5, then what is RT?
March 29, 2015

I need help with this ALGEBRA
Yes you were! Good job! Glad I could help. :)
March 17, 2015

I need help with this ALGEBRA
v=20√(273+t) 329 = 20*sqrt(273+t) 16.45 = sqrt(273+t) 273+t = 16.45^2 t- 16.45^2-273 t = -2.4 degrees celsius Hope that helps? :)
March 17, 2015

Science
March 17, 2015

Science
I don't think C is right. D. is the correct answer.
March 17, 2015

Algebra
1. Solve log(4/x) (x^2 - 6) = 2. (note: the (4/x) is underscored) 2. Show that loga [(x + {sqrtx^2-5}) / 5] = -loga (x - (sqrtx^2-5))
March 15, 2015

Algebra
1. Solve: log (y-1) = -log(y-9) 2. Find the inverse of the logarithmic function f defined by f(y)= 2log5 (2y-8)+3.
March 14, 2015

Math
1. Solve: log (y-1) = -log(y-9) 2. Find the inverse of the logarithmic function f defined by f(y)= 2log5 (2y-8)+3.
March 14, 2015

Math
Thank you very much. Very clear explanation.:)
March 13, 2015

Math
1. Solve for y in the equation 15 * 3^(y+1) - 243 * 5^(y-2) = 0. 2. Solve: log y-1 = -log(y-9)
March 13, 2015

Math
1. Find the inverse of the logarithmic function f defined by f(y) = 2 log5 (2y-8) + 3. 2. If x > y > 1, what is the largest possible value of logx (x/y) + logy (y/x)?
March 13, 2015

Math
1. The sequence log2 32, log2 y, log2 128, ... forms an arithmetic sequence. What is the value of y? 2. If log a^2 b^3 = x and log (a/b) = y, what are the values of log a and log b?
March 13, 2015

Math
1. Find all values of p so that 6p, 4p-1, p^2 - 1 will be an arithmetic sequence. 2. The common ration of a geometric sequence is -3. IF the terms of this sequence are 3y, y+6, z+1, ..... respectively, what is the value of z?
March 13, 2015

Chemistry
A chemist reacts 112 g of iron with 72 g of water. State which reactant is the limiting reagent. Calculate what is the maximum yield in grams of Fe3O4 that could be produced in this reaction. For the substance that is not the limiting reagent, calculate the amount in excess.
March 12, 2015

Health
1:According to MyPlate which two food groups should you consume in the largest amounts? A:Fruits And Grains B:Grains and Protein C:Protein and Veggies D:Veggies and Grains
March 6, 2015

Geometry
1. If triangles EIO = UAN, EI = 3x-4, IO = 2x+5, UA = 2x+3 and UN = 3x+1, solve for the value of x, find the perimeter of triangle UAN and identify the smallest angle in triangle EIO. 2. If triangle FAT is equal to triangle GRC, FA = 24cm and the ratio of GR, RC and GC is 2:1:...
March 4, 2015