Tuesday
October 21, 2014

Posts by Lily


Total # Posts: 1,133

AP Giannini
Dexter makes a scale drawing of his room. In real life, the room is 10' wide and 12'6" long. In Dexter's drawing, the room is 4"wide, what measure should the length be? explain how you figure this out.
October 15, 2014

chemistry
how could solid magnesium phosphate be prepared and collected using hydrochloric acid, sodium phosphate solution, water and magnesium? For the answer, write a series of steps that describe the procedure and includes a balanced chemical equation for each step
October 14, 2014

3rd garde math
what is 12 x 12? im having a hard time can anyone help me??????????
October 1, 2014

Trigonometry
A volleyball player spikes the ball from a height of 2.44 meters. Assume that the path of the ball is a straight line. To the nearest degree, what is the maximum angle, θ, at which the ball can be hit and land within the court?
September 30, 2014

Physics
A meter stick weighs 200 grams and is supported at the center. Three masses of 100, 200, and 150 grams are placed respectively, at the 10-cm, 20-cm and 60 cm points of the meter stick. To balance the meter stick, where must a 300 grams weight be placed on the meter stick?
September 28, 2014

Social Studies
I need a website that has answers to this worksheet: Russia and Eastern Europe: CHERNOBYL - April 26, 1986.
September 23, 2014

physics
A state trooper’s car sends out a radar signal at a frequency of 13.3 GHz. Find the wavelength of this signal. The wave speed is 2.998 × 108 m/s. Answer in units of m
September 18, 2014

music
How much music is in your head?
September 18, 2014

math
Which of the following situations describe quantities that combine to make 0? During the top of the fourth inning of a baseball game, the Ravens scored three runs. During the bottom of the fourth inning, the Raiders scored five runs to tie the game. Jacoby went on a hiking ...
September 18, 2014

math
a plane flew for 4hrs, 30 miles per hour and an adverge speed of 515 mph how far did it fly?
September 17, 2014

AP CALC. AB
1.Locate the discontinuity of the function y=1/(1+sin x) 2.Suppose that f is a continuous function defined for all real numbers x and f(-5)=3 and f(-1)=-2 . If f(x) = 0 for one and only one value of x, then which of the following could be x?
September 14, 2014

AP CAlc. AB Please helppp!!
f(x)=|x|+1 Let A(r) be the enclosed by the x axis, the line x=-2, the graph of the function f, and the line x=r for any r=>-2 A) Write A(r) as a piecewise function with its joints at r=0 Please walk me through each step i am really confused!!
September 8, 2014

AP CAlc. AB
Thank you so much Steve!!!
September 6, 2014

AP CAlc. AB
limit x->0 (3k+k(x^2) sin(1/x)), if k is a positive constant
September 6, 2014

comprehension
Thank you so much!!!!
September 5, 2014

comprehension
can you please explain to me how it is 8 days so i can learn?
September 5, 2014

comprehension
thank you
September 5, 2014

comprehension
the grasshopper fell into a hole that was 3 meters wide and 2 meters deep. the grasshopper himself was only 5 centimeters long. over the course of a day he managed to climb 1/4 of a meter. if he continues at this rate how long will it take him to climb out the hole? A- 8 days ...
September 5, 2014

English
I'm writing a fable but I'm stuck for ideas. I like the morals don't judge a book by its cover and man is what he believes. I cant think of anything else but the story has to have animals as the characters. I can't get help from my teacher as we got this ...
September 5, 2014

math
how is the process used to multiply a fraction an a whole number similar to the process used to multiply two whole numbers?
September 1, 2014

Algebra
5.) A boat makes a trip downstream in 5 hours. The return trip against the current takes 12 hours. If the speed of the current is 3 1/2 km/h, what is the speed of the boat in still water? 6.) How far does the boat referred to in Exercise 5 travel (one-way)?
August 31, 2014

p.e
I do not go to connection academy. I go to arvada middle school and this is homework I need help on.
August 26, 2014

p.e
All aspects of health are equally important. A problem in one area can affect other areas. A. true B. False Is the answer false?
August 26, 2014

p.e
I wouldn't think it would be becauseyou can't control your friends so would it be d
August 26, 2014

p.e
You decide you are going to make more responsible health decisions. Which of the following risk factors can you control? A. there is a history of heart disease in your family. B. there is a higher incidence of high blood pressure in your ethnic group. C. your friends have ...
August 26, 2014

p.e
I thought that the answer was D because of the illness but my mom said I was wrong.Is the answer D?
August 26, 2014

p.e
Which of the following habits will most likely move you towards the illness end of the health continuum? A. maintaining supportive relationships with family and friends B. getting enough rest C. Dieting D. isolating yourself from others Is the answer a?
August 26, 2014

English
What's the relative clause in this sentence His questions revealed an intelligence that was beyond his young years
August 19, 2014

Math
the answer is c.)42
August 13, 2014

Accelerated Algebra
it takes 80 feet of fencing to enclose your garden. According to your calculations,you will need 350 square feet to plant everything you want. Is your garden big enough? Explain your answer. They gave a rectangle length=40-x and width= x I asked my mom and she also got ...
August 10, 2014

physics
An object carries a charge of -6.9 µC, while another carries a charge of -2.0 µC. How many electrons must be transferred from the first to the second object so that both objects have the same charge?
July 28, 2014

physics
Two spherical objects are separated by a distance of 1.53 × 10-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each ...
July 28, 2014

physics
A proton moves parallel to an electric field between points A and B. The change in the proton's electric potential energy is EPEB – EPEA. If the proton is removed from point B and replaced with an electron, how does the change in electric potential energy of the ...
July 28, 2014

Physics
Two objects separated by a distance r are each carrying a charge –q. The magnitude of the force exerted on the second object by the first is F. If the first object is removed and replaced with an identical object that carries a charge +4q, what is the magnitude of the ...
July 28, 2014

Help english
I need help with English comprehension.
July 17, 2014

math
find the straight line that passes through point (2,4) and is perpendicular to line 2x + 12y - 6 = 0
July 5, 2014

computer system organization
2. You're an IT professional, and your boss has asked you to prepare a briefing for senior staff on the comparative advantages and disadvantages of three competing tape drive technologies: Digital Linear Tape (DTL), Advanced Intelligent Tape (AIT), and Linear Tape Open (...
July 1, 2014

Chemistry
A solution of X2CO3 has a concentration of 15.2 g/dm^3. 25 cm^3 of this solution require 27.5 cm^3 of 0.2 M HCl for complete reaction. Calculate the ralative atomic mass of X
June 28, 2014

math
A cylinder is 12cm tall and has a diameter of 3 cm. What is the surface area?
June 8, 2014

math
A polyhedron has 6 faces and 4 vertices. Use Euler's formula to calculate the number of edges.
June 8, 2014

Algebra
Using a standard 52-card deck, whats the probability of being dealt a pair of aces in a 5-card hand?
May 28, 2014

English
Connect the first act of Love's Labor's Lost to a current event
May 15, 2014

Chem
Calculate the absolute error in a mole ratio. Determine mole ratio of Zinc iodide. error in mass (g) was +- 0.005 Mass of reacted Zn = 0.16 Mass of iodine = 1.134 experiment value= 1:1.95 calculate absolute error in 1.95?
May 15, 2014

Physics
A car's engine is only 12% efficient at converting chemical energy in gasoline into mechanical energy. If it takes 1.8 x 104 N of force to keep the car moving at a constant speed of 21 m/s, how much chemical energy would be needed to move the car a distance of 450 m at ...
May 4, 2014

Algebra
How would you simplify b^4=25/4
April 22, 2014

Science
when the interior of a car absorbs sunlight and warms up.
April 15, 2014

MATH
In triangle PQR, <P=90 degrees, <Q=10.5 degrees and RQ=120 cm. Find PR.
April 15, 2014

Math
In triangle PQR, <R=90 degrees, <Q=10 degrees and RQ=16 cm. Find PR.
April 15, 2014

Chemistry
The equilibrium constant Kc^i is 3.2x10^-34 at 25 degrees C for 2HCl(g) -> H2(g) + Cl2 (g). The equilibrium constant Kc^ii is .10 at 25 degrees C for 2ICl (g) -> Cl2 (g) + I2 (g). a) Calculate the equilibrium constant Kc for the reaction below at 25 C Cl2(g) + I2 (g) -&...
March 13, 2014

Math
Put the quadratics below into vertex form by completing the square. state the vertex. y=2x^2 - 4x-6
March 8, 2014

Math
Put the quadratics below into vertex form by completing the square. state the vertex. a) y=x^2 - 4x-21
March 8, 2014

Chemistry
Is the reaction between sodium sulfate and strontium nitrate endothermic or exothermic and why?
March 5, 2014

Math
A rocket follows a parabolic trajectory. After t seconds, the vertical height above the ground, in metres, is given by H=37t - t (squared). What is the maximum height of the rocket after 10 seconds? What is the max height of the rocket? What time does it reach the maximum ...
March 5, 2014

physics
What is the momentum of a 4 Mg semi truck going 30 m/s south?
March 5, 2014

Language
Thank You Writeacher
March 4, 2014

Language
What's the easiest way to tell the difference between participles and gerund? Besides that one is a adjective and the other one is a noun and the type of questions they ask.
March 4, 2014

Math
Please can you tell me how to find the percentage and probability
February 28, 2014

physics
Explain why should torques, not forces, play essential roles in the following actions. (a) open or close a door (b) tighten or loosen a screw using a wrench c) "Give me a place to stand, and I shall move the Earth with it"
February 24, 2014

math
Please can you tell me which method should I use to solve probability because I don't understand how to solve probability for grade 6
February 24, 2014

math
Tara has driven 70 miles of a 154 mile trip. If she averages between 50 and 57 miles per hour, which of the following is a reasonable amount of time it will take her to complete the trip?
February 24, 2014

Math
How can you solve this inequality using an algebraic method. -x^3+2x^2+4x-8 > or equal to 0 (x-2)(-x+2)(x+2) > or equal to 0
February 22, 2014

Pre calc
8sinxcosx=1 I don't know where to go after 2sinxcosx=1/4
February 5, 2014

Chemistry
In a similar experiment, a student needs a 0.50 M KOH solution (MM = 56.11 g/mol). The student only has a 50.00 mL volumetric flask. How much KOH should be added before the flask is filled with water?
February 2, 2014

world history
Oops sorry, but it's an abbreviation for: political, economic, religious, military, social power
February 2, 2014

world history
I need to find out if Obama mentions any PERMS power in this section of the State of Union 2014 Speech. I'm stuck and it doesn't seem like he mentions any political power, military power, etc. --------------------------------------- As Prepared for Delivery – Mr. ...
February 2, 2014

Chemistry
Where can I find some chemical equations about land pollution? Please give me the website link.
January 28, 2014

Chemistry
Can you list some chemical equations about water pollution? At least 5.
January 28, 2014

ela
I'm doing an essay on how author's language expresses change in character. First, I need to know how David changed from a particular event in the story David's Haircut by Ken Elkes. I want to say that David changed from the haircut or that David changed from the ...
January 27, 2014

math
A teacher has a 10m roll of ribbon 3 cm wide . She cuts off 7 equal lengths 3 cm wide to make team bands for PE . There is 90 cm of ribbon left . How long is each team bands
January 26, 2014

Fractions
how do I solve for X? can you show me how?
January 26, 2014

Fractions
Sam has 9 yellow pencils in his desk. 3/4 of his pencils are yellow. How many pencils does Sam have in his desk? 3rd grade fraction, slightly confusing to me
January 26, 2014

Math
Thank you both! :)
January 22, 2014

Math
Would it be 60%????
January 22, 2014

Math
Express 3/5 as a percent.
January 22, 2014

social studies
I need to answer the questions on my study guide, it is my homework but I forgot my book,I need to read chapter 3 it's about our earth,s renewable and non renewable resources.where else I find out about it
January 21, 2014

physics
A mountain biker rides a given distance due north, then drives twice that far to the west. At the end of the trip the direct distance from the starting point is 112meters. What is the length of each leg of the trip and in which direction is the end point?
January 12, 2014

Earth science
In a few sentences, explain how information from paleoglaciation and paleomagnetism support the idea that continental plates have moved over the past several million years.
January 10, 2014

earth
Suppose a geologist is studying two distinct areas next to a spreading ridge. The magnetic direction of the minerals in the oldest area is opposite to the magnetic direction of minerals in the newest area. (a) Which area is closest to the centre of the ridge, the older or ...
January 9, 2014

Math
Cause if f(x)=3x-1 F(5) would be 3(5)-1 Which is 14 But someone told me the answer was 16
December 26, 2013

Math
Would the answer be 16?
December 26, 2013

Math
Let f(x) be a linear function with f(1) = 2 and f(3) = 8. Find f(5) How do u solve it like the steps
December 26, 2013

Math
So the equation is -3(x+1/2)? Like there's no Y= in it?
December 26, 2013

Math
Find the equation of the perpendicular bisector of the line segment joining the points (1, 2) and (-2, 1) Does it mean I have to find the line. Then find a line that cuts that line in to half because perpendicular bisector
December 26, 2013

Math grade 9
Find the distance from the point (5, 6) to the line x + y = 3 I don't get the x+y=3 mean
December 20, 2013

Science
Explain how an increase in agricultural activity might affect a local fishery.
December 19, 2013

Science
Design an experiment to determine what level of a new synthetic insect killer called Beegone is lethal to geraniums.
December 19, 2013

Science
A persistent organic pollutant is estimated to have a half-life of 30y. If 3 tonnes of the chemical exists in a polluted area today, how much of the chemical will remain after 120y.
December 19, 2013

biomed
Why are DRIs not shown on food labels?
December 17, 2013

science
Explain why a chemical with a long-half life may create problems in the environment?
December 16, 2013

science very urgent need help
An experiment is set up to test whether a particular insect prefer a dark or a bright environment. A chamber with a gradient in light intensity from one end (dark) to the other (bright) has been made. The experimental hypothesis is: “There will be a large difference ...
December 16, 2013

Science, very urgent please help
An experiment is set up to test whether a particular insect prefer a dark or a bright environment. A chamber with a gradient in light intensity from one end (dark) to the other (bright) has been made. The experimental hypothesis is: “There will be a large difference ...
December 16, 2013

Math please help urgent
In triangle ABC, D bisects side BC, G bisects side AB, and the points E and F trisect side AC. What is the area of the shaded polygon, if the area of ABC is 108? I tryed to find the area of triangles on the side and I figured that if you put a line from the top of the triangle...
December 7, 2013

Math
In triangle ABC, D bisects side BC, G bisects side AB, and the points E and F trisect side AC. What is the area of the shaded polygon, if the area of ABC is 108? I tryed to find the area of triangles on the side and I figured that if you put a line from the top of the triangle...
December 7, 2013

Math
In triangle ABC, D bisects side BC, G bisects side AB, and the points E and F trisect side AC. What is the area of the shaded polygon, if the area of ABC is 108? I tryed to find the area of triangles on the side and I figured that if you put a line from the top of the triangle...
December 7, 2013

Math
In a triangle ABC, AC = 36, BC = 48, and the medians BD and AE to sides AC and BC, respectively, are perpendicular. Find AB I tryed to find the sides using Pythagorean theorem but it's not working
December 7, 2013

Math
the right triangle ABC, the altitude from vertex C divides the hypotenuse into two segments, one of length 2 and the other of length 16. Find the perimeter of triangle ABC.
December 7, 2013

child care
True or False 80% of offenders of Shaken Baby Syndrome have no previous history of child abuse.
December 1, 2013

Physics
To solve this problem, you'll need the tension formula which is T=Ma. T is tension, mass M is weight Mg and tension or in other words the mass that is on the surface, & a is acceleration. M=3kg a=2.5m/s2 T=? Just plug it into the formula... T=(3kg)(2.5m/s2) T=7.5N
November 30, 2013

Math
I'm confused, please help. If a quarterback had 112 positive yards and 61 negative yards what was his total yardage, should I add both together?
November 25, 2013

Math
Thank you soooooooo much Ms. Sue
November 25, 2013

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