Wednesday

November 25, 2015
Total # Posts: 88,282

**Social Studies**

The Dutch ??
*September 2, 2015*

**Social Studies**

Use the quote to answer the question: "The natives are too happy to share…… for a copper kettle and a few toys, as beads and hatchets, they will sell you a whole Country…." Which European power was able to purchase a valuable island with "a few ...
*September 2, 2015*

**science**

when kcn reacts with nh4cl to give
*September 2, 2015*

**Physics**

A is south and b is north Sorry i made a mistake
*September 2, 2015*

**Physics**

A. V=d/t = 50m/20s = 2.5 m/s north B. V=d/t = 50m/22s = 2.27 m/s south C. V= 50m-50m/20s+22s = 0m/s Im not sure of c.
*September 2, 2015*

**Reading**

In which sentence is the word periscope used correctly? A. Excited about her finding, the scientist used a periscope to view the organisms in the water sample.**** B. On the night of the full moon, we used the periscope to look at the sky. C. Sitting behind the tall stone ...
*September 2, 2015*

**life orientation grade 11**

Pollution
*September 1, 2015*

**life orientation grade 11**

social and environmental responsibility (environmental issues that cause ill - health
*September 1, 2015*

**math**

Help I don't get math
*September 1, 2015*

**math **

For positive integers x and y, x+y=21. What is the smallest possible value of xy? a.10 b.20 c.38 d.54 e.110
*September 1, 2015*

**MAT 221**

If 6 pens cost d dollars, how much, in dollars does each cost.
*September 1, 2015*

**Math**

Would two coterminal angles for -13pi/6 be -25pi/6 and 11pi/6?
*September 1, 2015*

**math**

Three hundred ten million,seven hundred sixty three thousand one hundred thirty six. And the other is 20,000,000 + 400,000 + 80,000 + 4,000 + 100 + 60 + 3
*September 1, 2015*

**algebra**

How do you calculate the rate of 40 cars parked in 6 rows in a parking lot
*September 1, 2015*

**Chemistry**

Thank you for your help
*September 1, 2015*

**Chemistry**

ok so for wavelength I get 6.058x10^-7 then I divide: 2.998x10^8 / 6.058x10^-7 and get 4.949x10^14 Hz Is this correct?
*September 1, 2015*

**Chemistry**

Oh is it 1.816x10^2? I divide the speed of light by the wavelength: 2.998x10^8 / 1,650,763.73 I did the reverse the first time. Is this correct now?
*September 1, 2015*

**Chemistry (Please check my answer)**

I got 5.506x10^-3 when I divide the wavelength by the speed of light but I don't think that's right because Kr is an isotope. Could you please explain how this works too?
*September 1, 2015*

**Chemistry**

The meter has been defined as 1,650,763.73 wavelengths of the orange-red line of the emission spectrum of ^86Kr. Calculate the frequency of this radiation. In what proportion of the electromagnetic spectrum does the radiation fall?
*September 1, 2015*

**Pre-Calculus**

???
*September 1, 2015*

**Pre-Calculus **

focus at (-2,0) directrix the line x=2
*September 1, 2015*

**Science**

Then why are you on here?….EXACTLY….I am on here trying to help other students understand certain subjects and questions not just GIVE them the answers...
*September 1, 2015*

**Science**

If this is a test, you shouldn't be looking up answers!
*September 1, 2015*

**Science**

look, i just need one example you don't have to like that, and second this is on a test and just like you i don't have much time to be here all day
*September 1, 2015*

**Science**

Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life.
*September 1, 2015*

**Science**

Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life.
*September 1, 2015*

**P.E**

D is correct. *Just took the quiz. :)
*September 1, 2015*

**math**

5,10,20,40,__,___,___,___
*September 1, 2015*

**Algebra**

Write a algebraic equation Ron is 10 years younger than maria. If maria is 'n' years old, how old is Ron
*August 31, 2015*

**Chemistry**

Suppose that 2.091x10^-18 J is absorbed by the electron of a hydrogen atom in the n=1 energy state. Describe the final energy state of the atom.
*August 31, 2015*

**math**

660/60 = ft/s
*August 31, 2015*

**Chemistry**

How much energy in joules is required to change the energy state of the H-atom electron from n=2 to n=3? from n=2 to n=4? from n=2 to infinity? Kind of confused on this concept. Could you please explain for me? Thanks
*August 31, 2015*

**math**

Cherish planted 12 flowers. She put the same number of flowers in each row. Draw a picture to show how she planted her flowers. Write an addition sentence to match your problem
*August 31, 2015*

**noun**

Seconds
*August 31, 2015*

**Math**

Oh ok! Thank you
*August 31, 2015*

**Math**

100 milk cartons were put out for breakfast. At the end of breakfast ony 27 remained what is the ratio of milk cartons taken to total milk cartons
*August 31, 2015*

**Science**

i did and there was no help from it
*August 31, 2015*

**Science**

1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly.*** Scientists use models of natural systems because they like to use art in science. ...
*August 31, 2015*

**science**

1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
*August 31, 2015*

**science**

1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
*August 31, 2015*

**chem**

12.16 mL of 0.205 M thiosulfate are required to reach the endpoint in the titration of 2.26 g of bleach sample
*August 31, 2015*

**math accounts economics**

what job can I get with these subjects
*August 31, 2015*

**physic**

A 1.2-kilogram basketball travelling at 7.5 meters per second hits the back of a 12-kilogram wagon and bounces off a 3.8 meters per second, sending wagon off in the original direction of travel of the ball. How fast is the wagon going?
*August 31, 2015*

**Chemistry**

If the H-atom electron in the n=1 state absorbs energy equivalent to 2.178x10^-18 J, what energy state will it occupy?
*August 30, 2015*

**physics **

A system does 137 J of work on its environment and gains 95.3 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment
*August 30, 2015*

**Plus**

569 times 12
*August 30, 2015*

**physics**

Water at 29.0 °C is sprayed onto 0.188 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that must be used?
*August 30, 2015*

**Calculus**

Differentiate y=[(8x-x^6)/(x^3)]^(-4/5) My answer: [4x^3(16+3x^5)]/5 • fifth root of [(8x-x^6)/(x^3)] ^9
*August 30, 2015*

**Calculus**

Differentiate e^cos (x^2+1). My answer: -2xe^cos(x^2 +1) • sin(x^2+1)
*August 30, 2015*

**geometry**

ugh.. it didnt turn out to be boxes..
*August 30, 2015*

**geometry **

So On the first day of school I went to geometry and we did a review. My teacher had us work out this problem and I've never seen it before. Other kids were doing the problem and I was just there confused. I was embarrassed and didn't want to ask for help. Do any of ...
*August 30, 2015*

**world history **

why might a person say aristotle is the most modern of the ancient greek philosophers?
*August 30, 2015*

**Calculus**

Find the equation of the tangent line to f(x)=sec x - 2 cos x at (pi/3, 1).
*August 30, 2015*

**Calculus**

Differentiate. f(x)=(cos x)/x I got to here: (-x sin x - cos x)/x^2
*August 30, 2015*

**intro to digital tech**

. Come up with an Invention that may impact/change the world 50 years from today. Get creative and think outside the box. Do your research to think of an idea that would really help change/impact the world positively. 2. Write about the following in detail: a. What is the ...
*August 30, 2015*

**Math**

On Saturady, Emily made 10 times as much as on Monday. How much money did Emily Collect on Monday?
*August 30, 2015*

**physics**

a men in circus shows jump from a height of 10m &caught by net spread below the net sag 2m due to its impact.find avgforce exerted by net on man to stop hiss fall .takeamassofman60kg and acceleration10m/s2
*August 29, 2015*

**physics**

a men in circus shows jump from a height of 10m &caught by net spread below the net sag 2m due to its impact.find avgforce exerted by net on man to stop hiss fall .takeamassofman60kg and acceleration10m/s2
*August 29, 2015*

**Chemistry**

Use v0= vmax*[S]/(km+[S]) where v0= 1/10*vmax km= 1/2vmax plug and chug, solve for vmax and plug into km=1/2vmax equation to get km
*August 29, 2015*

**Calculus**

Differentiate. f(x)=(cos x)/x I got to here: (-x sin x - cos x)/x^2 Find the equation of the tangent line to f(x)=sec x - 2 cos x at (pi/3, 1). Is the slope 3 times sqrt of 3? Equation is y=3 times sqrt of 3x - pi times sqrt of 3 +1??
*August 29, 2015*

**Calculus**

Find the equation of the tangent line to f(x)=x sec x at (pi/4, pi •sqrt of 2 all over 4). I got to here, but did not know what to do next: slope: (pi/4)(sqrt of 2 over 2) + (sqrt of 2 over 2) everything over 1/2=.......
*August 29, 2015*

**world history **

why might a person say aristotle is the most modern of the ancient greek philosophers?
*August 29, 2015*

**Calculus**

Find the derivative. d/dx[sqrt of x (x^3 +1)] My answer in its most simplified form: (7x^3 + 1)/ 2 • sqrt of x
*August 29, 2015*

**Math**

Problem 3) Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by both their ...
*August 29, 2015*

**calculus**

R is the first quadrant region enclosed by the x-axis, the curve y = 2x + b, and the line x = b, where b > 0. Find the value of b so that the area of the region R is 288 square units.
*August 29, 2015*

**Algebra**

Write each expression in radical form. 1. (10n)^3/2 My answer: sqrt of 10n to the power of 3 Could it be simplified further to 10n times sqrt of 10n? 2. a^6/5 My answer: the fifth root of a to the power of 6 Could it be simplified further to "a" times the fifth root ...
*August 29, 2015*

**english**

ok thx
*August 29, 2015*

**english**

so B
*August 29, 2015*

**english**

Which is a complete sentence? a. Jordan Pond House was destroyed by fire in 1979. b. Seal Harbor for popovers and fruit ice cream. c. Two campgrounds inside the park, Blackwoods and Seawall. d. For the future of the site, restoration of the Rambling Inn. need help please
*August 29, 2015*

**calculus**

The base of a solid is bounded by the curve y= sort (x+2) ,the x-axis and the line x = 1. The cross sections, taken perpendicular to the x-axis, are squares. Find the volume of the solid.
*August 29, 2015*

**calculus**

Find the domain for the particular solution to the differential equation dx/dy=1/2x, with initial condition y(1) = 1.
*August 29, 2015*

**P.E.**

Ohhhh.. sorry i was wrong, oppps..... Anyway i think it is Jogging regular with friends
*August 29, 2015*

**P.E.**

Which of the following habits will help you stay on the "wellness end" of the health continuum? Staying up to late and not getting enough rest*** Going on a calorie-limiting diet Jogging regular with friends Going to the movies
*August 29, 2015*

**P.E.**

I googled it and i think i'm right. Thanks soo much:)
*August 29, 2015*

**P.E.**

Which side of the health triangle corresponds to having loving relationships with other and giving and accepting help? Physical health Mental and emotional health***??? Social health none of the above
*August 29, 2015*

**Science**

Thanks I'm done
*August 29, 2015*

**Science**

1)A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. To do this, he sprays the chemical on three plants he has in the laboratory. None of the plants survive. The scientist reports that the ...
*August 29, 2015*

**physics**

A stone is dropped into a well and the sound of the splash is heard after 3.91 seconds. If the depth of the well is 67.7 meter, find the velocity of sound???
*August 29, 2015*

**Calculus**

Let f be a function defined for all real numbers. Which of the following statements must be true about f? Which might be true? Which must be false? Justify your answers. (a) lim of f(x) as x approaches a = f(a) (b) If the lim of f(x)/x as x approaches 0 = 2, then f(0)=0. (c) ...
*August 28, 2015*

**English**

Which value is reflected in Heracles
*August 28, 2015*

**English**

Taking responsibility for one action
*August 28, 2015*

**Math **

Simplify by writing each fraction in lowest terms: X^2-y^2/(x-y)^2 My work: X^2-y^2/(x-y)^2 =X^2-y^2/(x-y)(x-y) =X^2-y^2/x^2-2x2y-y^2 I don't know what to do next.
*August 28, 2015*

**English**

I have to write a thematic essay and a characteristic essay. I have a few questions in the writing. I am in grade 11 right now. 1) what should I include in the introduction? Whenever I write anything about the story, my tutor says that is summarizing and I should not do that ...
*August 28, 2015*

**Math**

X^-5 * X^7 = X^2 And the reason is because when u are multiplying with the same base, you add the exponents
*August 28, 2015*

**government**

How much power and autonomy should Texas have in relation to the federal government? Why?
*August 28, 2015*

**Chemistry**

jklsdsa
*August 28, 2015*

**Algebra 2**

You need to earn $539 per week to afford the new car you want to purchase. Your work week is 46 hours. You get 1.5 times the regular hourly rate for overtime (anything over 40 hours). How much does your hourly rate need to be? (use step 1-4).
*August 27, 2015*

**Geometry **

Point J is between H and K on line HK. Use the given information to write an equation in terms of x. Solve the equation. Then find HJ and JK HJ=5x-3 JK=x-9 KH=5x
*August 27, 2015*

**4th grade math**

You could use a number line to
*August 27, 2015*

**Algebra**

(1,12) (2,76) (3,108) (4,124) (5,132) (6,136) (7,138) (8,139) (9,139.5) What is the rule or equation?
*August 27, 2015*

**math**

the garden has fencing around the perimeter and has a partition down the center. The length of the garden is 30 ft and the entire length of fencing used is 37 yards. How long is the partition in feet?
*August 27, 2015*

**Geometry**

You guys need to stop. That is pathetic of you to write stuff like that.
*August 27, 2015*

**geography need help please**

I need to pass my finals tomorrow! pleas help me! its geometry? Does anyone know how to do any of these problems ? please help! 1- 3, 5, 7, 9... Generalize the pattern by finding the nth term. A) 3n B) 2n + 1 C) n + 2 D) (n + 1)(n + 2) 2- If the radius of a cylinder is doubled...
*August 27, 2015*

**Kitakita high**

water polution and an everpopulation human evepolution
*August 27, 2015*