Saturday

May 28, 2016
Total # Posts: 97,213

**math**

V = Mass/Density or V = M/D You can do the maths.
*March 27, 2016*

**math**

Place value model.what is it
*March 27, 2016*

**math**

Show a place value model of4,362
*March 27, 2016*

**Physics help me plss**

80 km/h = 80000/3600 =22.22 m/sþ W=ΔKE= mv²/2= 8.6•10⁷•(22.22) ²/2=2.123•10¹⁰ J W₁=W/2 =1.062•10¹⁰ J W₁=ΔKE₁=mv₁²/2 v₁=sqrt(2W₁/m) = 15.71 m/s
*March 27, 2016*

**math**

At the end of Summer, Puss discovers that his radiator antifreeze solution has dropped below the safe level. If the radiator contains 4 gallons of a 25% antifreeze solution, how many gallons of pure antifreeze must he add to bring it up to a desired 50% solution? is the answer...
*March 27, 2016*

**math**

A company is making detergent out of soap and water. They made one batch that has 30% soap and another batch which is 60% soap. If they mix 600 liters of the first batch with 300 liters of the second batch, what percent of soap will be in the detergent?
*March 27, 2016*

**math**

40% of 36. Fresh ones have 20% non-water. So 20% of that plus 20% water.
*March 27, 2016*

**math**

Fresh raspberries are 80% water. Dried raspberries are only 20% water. How many pounds of dried raspberries do you get from 36 lb of fresh berries?
*March 27, 2016*

**Physical science**

The distance covered by the 1st ball for 1 second is hₒ=vₒ₁t - gtₒ²/2 =16•1 -9.8•1²/2 = 16 -4.9 = 11.1 m (above the ground) Its speed at this height is v= vₒ₁ - gtₒ=16-9.8•1=6.2 m/s. h=H-hₒ=30-11.1=18.9 m...
*March 27, 2016*

**maths**

76/19
*March 27, 2016*

**physics**

A house with a room wall of 5m by 3m is build of bricks of 20 cm. if internal temperature is 21 degrees celcius and those outside -18 degres celcius; what is the amount of heat flow if thermal conductivity is 0.63
*March 27, 2016*

**chem**

.025
*March 27, 2016*

**Physics help me guys**

80 km/h = 80000/3600 =22.22 m/s W=ΔKE= mv²/2=8.6•10⁷•(22.22) ²/2=2.123•10¹º J W₁=W/2 =1.062•10¹⁰J W₁=ΔKE₁=mv₁²/2 v₁=sqrt(2W₁/m) = 15.71 m/s
*March 26, 2016*

**Applied Physics**

An object moving with a constant accleration travels distance of 20m and 24m respectively in 3rd and 4th second of its motion. Find the initial velocity and the accleration of an object
*March 26, 2016*

**Applied Physicd**

An object moving with a constant accleration travels distance of 20m and 24m respectively in 3rd and 4th second of its motion. Find the initial velocity and the accleration of an object
*March 26, 2016*

**English**

What are the similarities and differences between having 1 vendor and multiple vendors in a school cafeteria.
*March 26, 2016*

**English**

There was no need to be rude... I was just asking a question.
*March 26, 2016*

**contempory math**

Find the letter that will be entry #130 in the sequence. A,G,G,G,G,A,G,G,G,G,G
*March 26, 2016*

**contempory math**

use inductive reasoning to predict the next three number in the patterns 3,4,7,11,18,29
*March 26, 2016*

**math**

thanks
*March 26, 2016*

**math**

can someone please find the right answer plz plz plz
*March 26, 2016*

**math**

i do not think that the answer to this question is 4/3 the quoins asks how many gallons of pure antifreeze must he add to bring it up to a desired 50% solution?
*March 26, 2016*

**math**

thanks you sooooooooooo much!
*March 26, 2016*

**math**

thanks you sooooooooooo much!
*March 26, 2016*

**math**

At the end of Summer, Puss discovers that his radiator antifreeze solution has dropped below the safe level. If the radiator contains 4 gallons of a 25% antifreeze solution, how many gallons of pure antifreeze must he add to bring it up to a desired 50% solution? how to solve ...
*March 26, 2016*

**Geography**

Are the borders of India (suuch as China, Nepal, Bangladesh, and Burma) related to culture (ethnic boundary) or more related towards physical features? I'm not sure how I can tell
*March 26, 2016*

**Geography**

I can't find any good ones that can help me identify differences
*March 26, 2016*

**Geography**

Can anyone help me find a political map of India in the 1920's and 1947
*March 26, 2016*

**Geography**

Can anyone explain how the political boundaries of India changed
*March 26, 2016*

**Geography**

For my project, it asks me to find 4 political maps of India from 1850, 1920, 1947, and 2010. After that, it asks me to write an essay explaining the historical map analysis. How do I do that from political maps?
*March 26, 2016*

**Geography**

14. Which of the following would NOT be an example of a core country? * Canada Sweden Japan Spain Iceland E?
*March 26, 2016*

**math**

thanks
*March 26, 2016*

**Chemistry**

At a certain temperature, the reaction has Kc = 5 x 108. If a reaction mixture at equilibrium contains 0.26 M of H2 and 0.087 M of Cl2, what is the concentration of HCl?
*March 26, 2016*

**English**

Thanks this will help
*March 26, 2016*

**English**

I need help for Habit 4 Think Win-Win summary please help
*March 26, 2016*

**Pre-Calc**

An exponential function may have a coefficient. In these cases, the equation is often written as f(x) = ab^x, where a is the real-number coefficient and b is the base. Find the value of f(-3) given that f(2) = 6 and f(0) = 54. My answer: a = 54, b = 0.33, f(-3) = 1.99.
*March 25, 2016*

**Polynomials**

Just to confirm He is correct
*March 25, 2016*

**Polynomials**

b d c b c d a a c c b c b a All these are correct, I had trouble on this practice test, so I studied got a couple wrong, but I went back and got all the correct answers for you!
*March 25, 2016*

**Polynomials**

Did you ever get the answers cause i don't know if
*March 25, 2016*

**~ CHEMISTRY ~**

If k is a constant, how will a change in volume change the pressure? Choose one set of numbers. Assign one of them to represent P and the other to represent V. What happens to P if V is assigned the larger number? What happens to P if V is assigned the lower number? Observe ...
*March 25, 2016*

**AP Chemistry**

Suppose the three gases were placed at 1.00 atm and 273 K in closed containers, as shown below. A tiny hole is opened in each container, allowing each gas to diffuse into another container filled with neon gas. What is the ratio of the rate of diffusion of nitrogen to the rate...
*March 25, 2016*

**Probability**

If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the probability that the card you select is a heart or Jack? (Your answer must be in the form of a reduced fraction.)
*March 25, 2016*

**math**

In a lottery game, a player picks 9 numbers from 1 to 43. How many different choices does the player have if order doesn't matter?
*March 25, 2016*

**Math**

Indira is wrapping the box with a length of 8 in. , a width of 6 in. , and height of 3 in. How much wrapping paper does she need?
*March 25, 2016*

**Math**

The point ( -1.5,-2) is reflected across the y-axis, What are the coordinates of the point after the reflection?
*March 25, 2016*

**Math**

A store manager set up a cardboard display to advertise a new brand of perfume. The display is a square pyramid whose base is 18 inches on each side. The height of each triangular face of a puramid is 12 inches. How much cardboard was used to make the display.
*March 25, 2016*

**math**

A person going to a party was asked to bring 5 different bags of chips. Going to the store, she finds 14 varieties. How many different selections can she make?
*March 25, 2016*

**mathematics-probability**

The above answer is not quite right. "The die has 6 sides, the probability of rolling a six when the die is rolled once is 1/6" is true. So let, p = 1/6. We are looking for the probability of exactly one success in 4 rolls. Using the Bernoulli trials method, your ...
*March 25, 2016*

**mathematics-probability**

The die has 6 sides, the probability of rolling a six when the die is rolled once is 1/6. When rolled 4 times, each time has a probability of 1/6. So, 1/6 * 1/6 *1/6 *1/6 = 1/1296
*March 25, 2016*

**AP Chemistry **

A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH. A)What is the pH after 20.0 mL of the 0.10 M NaOH is added? Show all calculations.
*March 25, 2016*

**math**

Laptop screen sizes are determined by the length of the diagonal portion of the screen. A laptop has a 12 inch width and the height measures 10 inches draw a diagram and calculate the screen size.
*March 25, 2016*

**Math**

Johns car can travel 26 miles on a gallon of gas. There are 2.5 gallons of gas in the tank. How far can jones car travel using the gas in the tank . 2.5 + 26 = 5.1
*March 25, 2016*

**Math**

Approximate .68 inch to the nearest eighth of an inch
*March 25, 2016*

**Physical **

The specific heat of aluminum is 0.897 J/g•°C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of aluminum from 7°C to 29°C? A. Q = 0.75 g x 0.385 J/g•°C x 22°C B. Q = 0.75 g x 0.385 J/g•...
*March 25, 2016*

**Math**

Add twenty-seven and thirty-six hundredths, eight and nine hundredths, and sixty-five and seventy-three thousandths
*March 25, 2016*

**Math**

What is the perimeter of a isosceles triangle that has 2 sides that are 22 inches?
*March 25, 2016*

**science**

0xfhk
*March 25, 2016*

**Physics**

A Boy Of 20KG Climbs 10m.Take 10m/s. Calculate the workdone,
*March 25, 2016*

**physics**

A satellite of mass 2500kg is orbiting the Earth in an elliptical orbit.At the farthest point from the Earth,its altitude is 3600km,while at the nearest point,it is 1100km.calculate the energy and angular momentm of the satellite and its speed at the aphelion and perihelion.
*March 25, 2016*

**maths **

A man gave 3 upon 8 of his property to his son and 1 upon 4 to his wife. What part of his property did he give to his son and wife.. .. .. ???????
*March 25, 2016*

**Precalculus**

An object is attached to a coiled spring. The object is pulled down (negative direction from the rest position) 88 centimeters, and then released. Write an equation for the distance d of the object from its rest position, after t seconds if the ...
*March 24, 2016*

**chemestry**

Calculate the number of moles of NH3 that can be formed from the complete reaction of 0.30 moles of N2 according to the equation N2 + 3H2 → 2NH3
*March 24, 2016*

**Math**

What is the maximum perimeter of an isosceles triangle whose side length are 5x+20,3x+76, and x+196?
*March 24, 2016*

**History**

Illinois
*March 24, 2016*

**math**

list all of the intergers there are between 13 & 50
*March 24, 2016*

**Physics**

A child twirls a 0.15 kg mass attached to the end of a 15 cm long piece of string. He twirls the mass around at 2.4 revolutions per second in a vertical plane. Calculate the tension in the string when the mass is at the top of the circle.
*March 24, 2016*

**Physics**

how many revolutions per minute would a 5.8 metre radius ferris wheel need to make for the passenger to feel weightless at the topmost point? mass of passenger is 55.00 kg.
*March 24, 2016*

**Physics**

an electric motor accelerates a grinding wheel at constant acceleration from 112 rev/min to 295 rev/min in 13 seconds. how many revolutions did it make in this time?
*March 24, 2016*

**Statistics**

What are some parallels and differences between regression models and time series models? Share some use cases to add to your discussion of the similarities and differences.
*March 24, 2016*

**Statistics**

what is seasonality in a time series and how could it impact modeling a response over time?
*March 24, 2016*

**sunnyvale**

4 boys went to the park. 3 of them bought ride tickets for x dollars, plus a game pass for 10dollars.the other one just bought a ride ticket. write an expression
*March 23, 2016*

**Engineering Accounting**

A car may be purchased with a $3500 down payment now and 72 monthly payments of $480. If interest rate is 12% compounded monthly, what is the price of the car?
*March 23, 2016*

**PHYSICS Centrifugal force**

someone swings a bucket of water in a vertical circle. Describe the water's motion to another person? or How would you? & also how to explain the motion of the water to them? How come the water didn't fall on the persons head? A: Centrifugal force causes the water to ...
*March 23, 2016*

**Math**

Mike drank more than half of his glass of juice. What fraction of juice could mike have drank?
*March 23, 2016*

**AP Chemistry**

A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base, or a weak acid with a weak base? b. ...
*March 23, 2016*

**Math**

Ruth and tom have the same point driving in opposite directions. Traffic conditions enable Tom to average 10 km/hr more than Ruth. After two hours, they are 308 km apart. Find the speed (Rate) of each person.
*March 23, 2016*

**physics**

A 20.0 gram bullet exits the rifle at a speed of 985 m/s. The gun barrel is 0.80 m long. What was the force(N) during the rocket’s launch? (Hint: note the units of the bullet!)
*March 23, 2016*

**Math**

Nevermind I got it it's 27 cubic centimeters. thanks anyway
*March 23, 2016*

**Math**

A cube has a surface area of fifty-four square centimeters. What is the volume of the cube?
*March 23, 2016*

**Biology (Please Help!)**

When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
*March 23, 2016*

**Biology**

When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
*March 23, 2016*

**PHYSICS**

A SUPERSONIC FIGHTER JET FLYING HORIZONTALLW AT HEIGHT OF 4KM ABOVE THE GROUND AND AT A SPEED OF 400M/S FIRES A ROCKET VERTICALLY DOWNWARD. THE ROCKET IS RELEASED WITH AN INITIAL SPEED OF 80M/S CALCULATE THE TIME OF FLIGHT OF THE ROCKET AND THE HORIZONTAL DISTANCE FROM THE ...
*March 23, 2016*

**English**

I need one for learning though
*March 23, 2016*

**English**

I'm writing an essay in English on whether learning always has a positive effect on a persona life. I said that it does. I need another main idea. My first one is learning can help us learn from our mistakes. I also need an example from literature or history. Please help!!!!
*March 23, 2016*

**?**

What skills should a messenger have
*March 23, 2016*

**Health**

Thanks!
*March 23, 2016*

**Health**

Which activity is an excellent strategy to help maintain strong teeth and healthy gums? 1.) Treating gum disease 2.) Treating tooth decay 3.) Wearing a mouth guard 4.) Eating a well rounded, proper diet I think it's No. 3
*March 23, 2016*

**Statistics**

How do the 3rd grade boys’ weight in Principal Ben’s school compare to the national average (mean weight = 90, sd =15)? Provide the IV, DV, and best method of analysis
*March 23, 2016*

**Science**

What if a student gets a 65 on 1 test and 100% on 4 tests? What will there grade be?
*March 23, 2016*

**Physics**

cant be done
*March 23, 2016*

**physics**

Fifty liters of gas is kept at a temperature of 200 K and under pressure of 15 atm. The temperature of the gas is increased to 400 K. The pressure is decreased to 7.5 atm. What is the resulting volume of the gas?
*March 23, 2016*

**math**

A rectangle made of square tiles measures 10 tiles long and 8 tiles wide. What is the width of a similar rectangle whose length is 15 tiles? is 12 tiles correct
*March 23, 2016*

**Calculus**

An airplane is flying above an observer standing on the ground. At the moment it passes overhead, the observer judges by its apparent size that the airplane’s altitude is 30,000 feet. It takes 50 seconds for the plane, moving in a straight, horizontal line, to move ...
*March 23, 2016*

**Calculus**

Im sorry this is calc
*March 23, 2016*

**Physics**

An airplane is flying above an observer standing on the ground. At the moment it passes overhead, the observer judges by its apparent size that the airplane’s altitude is 30,000 feet. It takes 50 seconds for the plane, moving in a straight, horizontal line, to move ...
*March 23, 2016*

**Physics**

An equilateral triangle initially has side length equal to 17 cm. Each vertex begins moving in a straight line towards the midpoint of the opposite side at a constant rate of 2.3 cm/s, continuously forming progressively smaller equilateral triangles until it disappears. At ...
*March 23, 2016*

**maths**

a+b/a-b + a²-4b²/a²-b² - a-3b/a+b How to solve this question and how to take the LCM of followings?.
*March 23, 2016*

**Social Studies**

F^ck you
*March 23, 2016*