Sunday
December 21, 2014

Posts by lily


Total # Posts: 1,154

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

SCIENCE
how can I transcibe this into mRNA? DNA- T A C G A C T A A C G T C A G T A G
November 12, 2013

science
What is the height (in miles) for a ( television satellite to be placed above the equator of Earth to rotate at the same speed as Earth and be able to relay pictures that have been beamed to it back to another place?
November 12, 2013

science
I do not know
November 11, 2013

Child Develpoment
What kind of experiences do you have as a child that will play a role in your development?
November 7, 2013

Chemistry AS
CALCULTE
November 6, 2013

Math
This is kind of vague but does anyone know what is important to know while learning about "Modeling Data With Quadratic Functions" ?
November 4, 2013

math
The path of a cannonball is a parabola modeled by the equation y= 55 + x - 0.002x^2, where x and y are both measured in feet. In this model, the cannonball starts at the point (0,55) and travels to the right. The ground is represented by the x-axis. Determine the horizontal ...
October 30, 2013

ENGLISH
What did "catch a cold" mean when Shakespeare first used it?
October 28, 2013

English
Shakespeare invented many familiar words and phrases. Find five examples that Shakespeare invented and that we still use today. Define what they meant in Shakespeare's time and what they mean now. (I tried to look some up but they did not give the information on what they ...
October 28, 2013

Math
5/6
October 23, 2013

Algebra 2
How would you find x and y? [2x 1] [1 3] [-4 -9] = [2 0] [2 -y] [2 6]
October 21, 2013

Algebra 2
I need help in understanding how to multiply the following matrix: 1/4 [ 4 0 -3 1] [12 16 6 -4] [0 -2 5 8]
October 20, 2013

physics
When a 58 gram tennis ball is served, it accelerates from rest to a speed of 45 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44 cm. What is the magnitude of the net force acting on the ball?
October 16, 2013

history
a british soldier
September 26, 2013

7th Grade
I dont like science...:]
September 16, 2013

Chemistry
When 0.03 moles of aluminum sulfate are dissolved in enough water to make 266 mililiters of solution, what is the molarity of sulfate ions? Answer in units of M
September 8, 2013

math
craig reads a book with 10 pages in the morning a book with 26 pages before dinner and a book with 10 pages after dinner find the mode of the number of pages in the books that craig read
September 5, 2013

Algebra 1
I had te same thing!! But at the back of te book the answer is (60-w) ft. And I am confused how yet got it!
September 2, 2013

Algebra 1
A rectangular garden that is w ft wide is enclosed by 120ft of fencing. How long is the garden?? All I need is an expression. I know that u can't solve this ptoblem because it doesn't give you enought information.
September 2, 2013

Algebra 1
Explain the difference between the following two phrases. Eight less than a number Eight is less than a number
September 2, 2013

Physics
An infinitely long line of charge has linear charge density ë. Find the energy density of the electric field at a point a radial distance r from the wire. (Use the following as necessary: å0, ë, r.)
August 31, 2013

physics
The dome of a Van de Graaff generator has a diameter of 32.0 cm and is surrounded by dry air with a 'breakdown' electric field of 3.00 106 V/m. What is the maximum potential of the dome?
August 28, 2013

physics
A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle. The rod has a total charge of −8.50 ìC. Find the electric potential at O, the centre of the semicircle.
August 28, 2013

physics
A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle. The rod has a total charge of −8.50 ìC. Find the electric potential at O, the centre of the semicircle.
August 28, 2013

chem
1. Suppose that a recipe calls for an oven temperature of 189°F. Convert this temperature to degrees Celsius and to kelvins. --I found that Celsius is 87.2, plug it in K=C+273, got 360.2 but it was wrong. (e) Neon, the gaseous element used to make electronic signs, has a ...
August 11, 2013

FINANCE
you want to retire in 30 years. You intend to invest $200 per month into a mutual fund that you expect to return 12% per year (1% monthly). If you continue making these monthly investments for 30 years, what amount of money will you have at the end of the 30th
June 25, 2013

More math linear equation help?
I'm looking at this graph where I see a line AB with the points (-2,2) and (2,8). Then I have to do the following: a) Find the length of AB b) Find the midpoint of AB c) Write an equation for the line going through AB I don't understand how to do part a and c, so could...
May 31, 2013

Math Linear function help?
How do you write an equation of a line in slope intercept form if two points are given? Ex. Say you were given the points (0,6) and (4,3)? What would you do?
May 31, 2013

Calculus
A rancher wants to build a rectangular pen with an area of 150 m2. Let W be the width of the pen and L be the length of the pen. a. Find an equation for the perimeter P in terms of W and L . b. Use the given area to write an equation that relates W and L . c. Find the pen ...
May 26, 2013

Algebra 2
Thank you
May 18, 2013

Algebra 2
State the possible number of imaginary zeros of f(x)= 2x^3 - 4x^2 + 8x - 3. 0,1,3?
May 18, 2013

Algebra 2
It feels like too many problems have no solutions! Very frustrating for me. Thank you for checking it!
May 18, 2013

Algebra 2
Solve the system: y^2 - 4x^2 = 4 and y = 2x. (-1,-2)?
May 18, 2013

Algebra 2
Thank you!
May 18, 2013

Algebra 2
Find the exact solutions of x^2 - (y - 12)^2 = 144 and y = -x^2. No solution?
May 18, 2013

Algebra 2
Sorry, I'm very rusty on this concept. Thank you for the explanation.
May 18, 2013

Algebra 2
Write the expression 13m^8 - 3m^4 + 4 in quadratic form if possible. m^8?
May 18, 2013

Algebra 2
Thank you
May 17, 2013

Algebra 2
Solve the system, 4x^2 + y^2 = 20 and y = 4x. (square root of 10/2, 2 square root of 10)?
May 17, 2013

Algebra 2
At this point, I'm fooling myself!:-)
May 17, 2013

Algebra 2
Thanks
May 17, 2013

Algebra 2
Find the exact solutions of x^2 - (y - 6)^2 = 36 and y = -x^2. (0,0), (6,6), and (-6,6)?
May 17, 2013

Algebra 2
Thank you, again!
May 16, 2013

Algebra 2
The graph (x - 2)^2 + 3(y - 2)^2 = 25 is the graph of a(n) ________. Ellipse?
May 16, 2013

Algebra 2
Thank you
May 16, 2013

Algebra 2
The graph of x^2 + y^2 = 6x + 81 is the graph of a(n) _______. Circle?
May 16, 2013

Algebra 2
Thank you
May 16, 2013

Algebra 2
The graph of x^2 - 12y = 12x - 12 is the graph of a(n) ________. Parabola?
May 16, 2013

biology
For each of these restriction enzymes, determine whether or not the enzyme would cut the normal, Mutant A, Mutant B, or Mutant C DNA sequences described in part (g) and select your answers in the table below:
May 15, 2013

Algebra 2
Thank you!
May 15, 2013

Algebra 2
The graph of 11x - x^2 - 4y^2 = 2y - 16 is the graph of a(n) ________. a. circle b. ellipse c. hyperbola d. parabola C?
May 15, 2013

Algebra 2
Thanks!
May 15, 2013

Algebra 2
The graph of 5x - 9y^2 = 12 - 4y is the graph of a(n)______. a. circle b. ellipse c. hyperbola d. parabola C?
May 15, 2013

Probability Math
A committee of four students will be selected from a list that contains six Grade 9 students and eight Grade 10 students. What is the expected number of Grade 10 students on the committee?
May 7, 2013

Math
At the Statsville County Fair, the probability of winning a prize in the basketball toss game is 0.1. a) Show the probability distribution for the number of prizes won in 8 games (round to 6 decimal places). b) If the game will be played 500 times during the fair, how many ...
May 7, 2013

Algebra 2
Thank you!
May 6, 2013

Algebra 2
Find the expansion of (r + 4)^3. r^3 + (3r^2)(4) + 3r16 + 64?
May 6, 2013

Physics
To measure how far below the ocean surface a bird dives to catch a fish, a scientist uses a method originated by Lord Kelvin. He dusts the interiors of plastic tubes with powdered sugar and then seals one end of each tube. He captures the bird at nighttime in its nest and ...
May 5, 2013

social studies
what is one power given to the state governments in the Constitution
April 16, 2013

Math
So it's rhombus
April 16, 2013

Math
Select the geometric figure that possesses all of the characteristics: (1) four equal sides (2) both pairs of opposite sides are parallel (3) it doesn't contain any right angle A) square B) parallelogram C) rhombus D) isosceles triangle I know it's not A or D
April 16, 2013

Chemistry
If there are 2L of H2 gas at .625 atm, and 1L of N2 gas at .200 atm isolated in two flasks, what are the final partial pressures of each, and the total pressure, after the valve between the two flasks has been opened and the gases are allowed to mix? Is this simply a ratio ...
April 7, 2013

Busines Ethics
Imagine you are a salesperson.When does offering a gift,Such as basketball tickets,become a bribe rather than just a sales practis ?
April 4, 2013

math
If line 1 passes through (2, -6) and (-2, -2) and line 2 passes through (-3, 2) and (2, 12), where will line 1 and line 2 intersect? a)(-4,0) b)(-2,-3) c)(-6,2) d) (-2,-2)
April 2, 2013

math
in the problem its doesn't give me an ^ its a table for an equation in this case y1=6+2x and i need to find the "y1"
April 2, 2013

math
y1=6+2x x1 y1 -3 ? -2 ? -1 ?
April 2, 2013

Number Theory
Yan was opening a new restaurant, so she went to the sign store to get letters to make a sign to hang above the storefront. When she got to the sign store, the only letters they had in stock were two copies of the letter 'X,' two copies of the letter 'E,' and ...
April 1, 2013

math
y1=6+2x x1 y1 -3 ? -2 ? -1 ?
April 1, 2013

math
y1=6+2x x1 y1 -3 ? -2 ? -1 ?
April 1, 2013

math
what is the slope of the graph? what does it mean in the context of the problem? the slope for the problem is 2 i don't understand the second question then it says what is the y-intercept and what does the y-intersept represent. for the problem the y-intercept is 3, the ...
April 1, 2013

math
what is the slope of the graph? what does it mean in the context of the problem? the slope for the problem is 2 i don't understand the second question then it says what is the y-intercept and what does the y-intersept represent. for the problem the y-intercept is 3, the ...
April 1, 2013

Biochemistry
B! i need B, my brain sucks and won't answer B
March 31, 2013

Algebra 2
Solve 12^x = 14^3x. I know I need to make the bases the same, but I don't know how.
March 22, 2013

Algebra 2
Thank you!
March 22, 2013

Algebra 2
Find a value(s) that makes the expression y^2 - 16 ---------- undefined. y^2 + 16 y=4i?
March 22, 2013

physics
a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up.
March 21, 2013

physics
a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up.
March 21, 2013

math
Identify a variable that could be described with an approximately normal distribution, and explain how you came to this conclusion.
March 5, 2013

Chemistry
A 1.44-g sample of an unknown pure gas occupies a volume of 0.336 L at a pressure of 1.00 atm and a temperature of 100.0 degrees Celsius. What is the unknown gas?
March 4, 2013

Chemistry
A 1.44-g sample of an unknown pure gas occupies a volume of 0.336 L at a pressure of 1.00 atm and a temperature of 100.0 degrees Celsius. What is the unknown gas?
March 4, 2013

science
what combination of mediums will produce a stright line of light? how do you correct for hyperopia? how do you correct for myopia? what kind of people have an astigmatism? what part of the eye act as a lens and what part acts as a screen? how do different types of lenes bend ...
March 3, 2013

Math:o
Thank you.
February 24, 2013

Math:o
It takes a florist 3h 15min to make 3 small centerpieces and 3 large cebterpieces. It takes 6h 20min to make 4 small centerpieces abd 7 large centerpieces. How long does it take to make each small centerpiece and each large centerpiece? Write and solve a system of equations to...
February 24, 2013

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