Thursday

October 27, 2016
Total # Posts: 101,636

**Chemistry**

How many grams of KCl should be added to 1.5kg of water to lower its freezing point to -7.5°C

*August 21, 2016*

**Math**

If I have 25 dollars and need to buy 25 fruits. The fruits is watermelon is 4 dollars. Peaches is 50 cents. Apples is 25 cents.what 25 fruits can I buy with 25 dollar's?

*August 20, 2016*

**Algebra**

What would the domain of Y=_/2x+14)/(x^2)-49 be? (2x+14 is under a square root) There's a hole but I do not know how to factor them

*August 20, 2016*

**algebra**

a ball is dropped from the top of a building that is known to be 256 feet high.the formula for finding the height of the ball at any time t is h=256-16t^2,where t is measured in seconds.how many seconds will it take for the ball to hit the ground?

*August 20, 2016*

**maths**

If the length of a rectangular room is 4 times its width,how is the room if it is 6,8 m long.Calculate the perimeter of the room.

*August 20, 2016*

**chemistry**

what is the concentration of na and co3 ions in 0.2M aqueous solution of na2co3

*August 20, 2016*

**government**

what states supported the new jersey plan

*August 19, 2016*

**Social Studies (check answers)**

thank you guys :) 100%

*August 19, 2016*

**American government**

Ms sue you rude 👋🏽

*August 19, 2016*

**calc**

Suppose the marginal cost is C′(x) = e^−0.3x , where x is measured in units of 200 items and the cost is measured in units of $10,000. Find the cost corresponding to the production interval [200, 1,000]. Round to the nearest dollar.

*August 19, 2016*

**Maths**

A bag contains marbles of three different colours red, blue , yellow. 2/5 of the marbles are red. The ratio of the number of blue marbles to the number of yellow marbles is 5:7. What fraction of the marbles in the bag is blue? There are 54 more red marbles than blue marbles. ...

*August 19, 2016*

**Math**

How do u simplify ab to the 3rd power over b to the 2nd power

*August 19, 2016*

**Language Arts, someone check please?**

So, the first one is A?

*August 18, 2016*

**High Agility Math**

Juan has twice as many brothers as sisters. His sister Maria has 5 times as many brothers than sisters. How many children are in the family?

*August 18, 2016*

**Health**

Social ad physical.

*August 18, 2016*

**Social Studies**

James is right

*August 18, 2016*

**Social Studies**

all yall shut up

*August 18, 2016*

**Social Studies**

@anon Then please learn how to spell "site".

*August 18, 2016*

**Social Studies**

this is a learning and homework help cite and you guys are ruining it

*August 18, 2016*

**History**

Thanks

*August 18, 2016*

**History**

Explain why you believe South Carolina is a “melting pot,” a “tossed salad,” or both. Explain the difference between the melting pot and tossed salad metaphors in your answer. Be sure to reference the people and communities of South Carolina in your answer...

*August 18, 2016*

**Social Studies (check my answers))**

1. c 2. b

*August 18, 2016*

**math**

find the derivative of g (theta)=sine squared (3 theta)

*August 18, 2016*

**maths**

At the sleep over, the pizzas were in thirds. Sally and her hungry friends ate seven thirds. How much pizza did they eat?

*August 17, 2016*

**Social Studies (Check Answers)**

are these answers wright?

*August 17, 2016*

**Social Studies (Check Answers)**

Hey universecentral1 were those answers right?

*August 17, 2016*

**L.A., Please Check**

The 3rd one is B

*August 17, 2016*

**Social Studies (Check Answers)**

I don't know, are they right? Can someone tell me?

*August 17, 2016*

**Math**

Suppose you are taking a true-false test consisting of 5 questions. In how many ways can you answer the question?

*August 16, 2016*

**History Social Studies (check answers)**

THANK YOU MEME. I got a 100%.

*August 16, 2016*

**Life Orientation**

I want answers not questions I got them

*August 16, 2016*

**Life Orientation**

I want the answer of the selected question

*August 16, 2016*

**Life Orientation**

1: inhumane farming methods

*August 16, 2016*

**perfect number**

I need two perfect numbers. For my activity,I should submit it tomorrow please help me. I need now. Please

*August 16, 2016*

**Social Studies**

its probably c, although it could be b

*August 15, 2016*

**Social Studies**

It's B, trust me, I've done this question before

*August 15, 2016*

**Social Studies**

the answer is B

*August 15, 2016*

**Social Studies**

the answer is D

*August 15, 2016*

**Social studies**

would you happen to be working on a homeschooling program too? XD

*August 15, 2016*

**Science**

An aeroplane flying in the air dips with a speed of 360 km per hr in a vertical circle of radius is 200m the weight of the pilot sitting in it 75kg calculate the force with which the pilot presses his seat and plane is at lowest point and plane is at highest point

*August 15, 2016*

**simple harmonic motion**

a simple harmonic motion is represented by x=4sin[3t+3.14/4].find the angular frequency and amplitude and what is the velocity and acceleration at t=1 second.

*August 15, 2016*

**SS**

Thanks Mrs. Sue for the links

*August 14, 2016*

**if the difference of two positive integer is 4,and**

if the difference of two positive integer is 4,and the difference of their square is 80,what is the sum of ? I'm

*August 13, 2016*

**physics**

40Â°C

*August 13, 2016*

**Mechanical Vibration**

nice ka jid. hahahaha

*August 13, 2016*

**Maths**

The graph of a quadratic is a parabola. A parabola has a max or min at the vertex. If the coefficient of x^2 is + it has a min (holds water), Otherwise a max. so find the vertex if y = ax^2 +bx +c then to find zeros you do x = [ -b +/- sqrt(b^2-2ac) ]/2a symmetry (center of ...

*August 12, 2016*

**car rental agency**

company a- $30/day 22cents/mile company b- $28/day 26 cents/mile For a 2-day rental, at what number of mile will the two companies charge the same. Steps please

*August 12, 2016*

**Algebra 1**

THINK square root of 2 (about 1.414213562) can NOT be expressed as a ratio of two whole numbers square root of ten can NOT be expressed as ratio of two whole numbers THEREFORE square root of two * square root of ten which is square root of twenty can NOT be expressed as the ...

*August 12, 2016*

**Algebra 1**

To which subset(s) does the number –square root of twenty belong? Choose all that apply. (Irrational Numbers (Rational Numbers*** (Integers*** (Whole Numbers (Natural Numbers The maximum of choices is 2

*August 12, 2016*

**Math**

Suppose you had 10 beads and sold 6. How many are left? If you can do that, do this one the same way.

*August 12, 2016*

**Math**

Abdul had 720 beads.He sold 648 of them. How many beads does he have left?

*August 12, 2016*

**Maths**

you want to try that again as text, and not URL?

*August 12, 2016*

**maths**

after n seconds, he has climbed 3n cm. After 19 seconds he has climbed 57cm On the 20th second he's at the top.

*August 12, 2016*

**Maths**

∫√tan x sec2x dx If that is sec^2(x), then if you let u = tanx du = sec^2x dx and you have ∫√u du

*August 12, 2016*

**math**

204

*August 12, 2016*

**math**

Starting with x, 2x/5 = b 1/6 (3/5 x) = u b = u+105 Now just solve for x by substituting in the values of b and u

*August 12, 2016*

**maths**

540 * 1.10

*August 12, 2016*

**maths**

goods costing ₹540 are sold at a gain of 10% . Find the SP

*August 12, 2016*

**Matg**

I have a case of 12x16 case of brownies how many square peices can I get in 2"

*August 11, 2016*

**ART**

Thank u

*August 11, 2016*

**physics **

a car moving with a speed of 50 km/hr can be spotted by breaks after at least 6m.If the same car is moving with a speed of 100km/hr the minimum stopping distance is? With solution

*August 11, 2016*

**physics **

a car moving with a speed of 50 km/hr can be spotted by breaks after at least 6m.If the same car is moving with a speed of 100km/hr the minimum stopping distance is?

*August 11, 2016*

**prealgebra**

(12/3.5)1.25

*August 11, 2016*

**NCC**

v = a t = 20 m/s

*August 11, 2016*

**Math**

so 1 man mows 4 greens in 160 min 1 man moves one green in 40 min You did not say how many greens to mow in an hour so I can not continue, but you should be able to figure it out now that you have the data for one man

*August 11, 2016*

**typos**

makes no sense

*August 11, 2016*

**Math**

240 people/one day so 240/4 = 60 so 60 - 24

*August 11, 2016*

**physics**

24 relative to you. 12 relative to the mirror surface and the floor etc. It is approaching the mirror surface just as fast as you are.

*August 11, 2016*

**Math**

You do whatever is inside the parentheses first.

*August 11, 2016*

**Math**

180 - 163

*August 11, 2016*

**Maths**

games played = 9+N games won = 2+N 2+N = (1/2)(9+N) 4 + 2 N = 9 + N N = 5

*August 11, 2016*

**Calculus**

Could be :)

*August 11, 2016*

**Calculus**

Find arccos (sqrt2/2). Can this be pi/4 and 7pi/4?

*August 11, 2016*

**Physics**

depends on temperature BUT I suspect that there is liquid chlorine in the bottle. If so then the pressure remains at the vapor pressure of Chlorine until it is evaporated. The N2 is all gas in there until you get down to liquid air temperature so it follows gas laws.

*August 11, 2016*

**Sum of geometric sequences**

5,15,45,135,....S10

*August 10, 2016*

**Math**

LCD 3/4 1/8 7/16 3/32

*August 10, 2016*

**Math**

draw four number lines and mark the spots. remember absolute value of -x is +x eg |-147| = + 147

*August 10, 2016*

**Science**

*scientific inquiry useful - Scientific inquiry refers to the diverse ways in which scientists study the natural world and propose explanations based on the evidence derived from their work.useful in such widely divergent enterprises as science and crime scene detective work...

*August 10, 2016*

**math**

a number is 160 when rounded off to the nearest ten.whta is the smallest possible value of the number?

*August 10, 2016*

**ap chemistry**

Propane gas and oxygen gas will chemically react via combustion. Write a blanced equation for this change and then use stoichiomety problem solving to determine the number of carbon dioxide molecules that can theoretically form.

*August 10, 2016*

**ap chemistry**

Ammonia decompose upon intense heating to produce nitrogen and hydrogen elemental products. Write a balanced equation and then use stoichiometry problem solving to determin the mass of nitrogen product that can form if exactly 25.50g of ammonia is fully decomposed.

*August 10, 2016*

**chemistry**

Ammonia decomposes upon heating to produce nitrogen and hydrogen elemental products. Write a balanced equation and then use stoichiometry problem solving to determin the mass of nitrogen product that can form if exactly 25.50 grams of ammonia(NH3) is fully decomposed.

*August 10, 2016*

**Language Arts**

or A

*August 9, 2016*

**Language Arts**

Would it be D

*August 9, 2016*

**Language Arts**

Identify the climax in the following example. 1.A boy sees a snake lying still in the road. He bends close to look at it. Suddenly, the snake moves. The boy jumps back. A. A boy sees a snake lying in the road. B. The snake is lying still in the road. C. The boy bends down to ...

*August 9, 2016*

**ap chemistry**

use dimensional analysis to find how many moles of nitrate ions are in 40.0 mL of a 0.75 M aqueous solution of aluminum nitrate

*August 9, 2016*

**Science**

Two forces whose magnitude are in the ratio 3 :5 gives resultant of 28. If the angle of their inclination is 60 Â°find the magnitude of each force

*August 9, 2016*

**science**

A spring fixed at one end can be streched by hanging standard masses from the other end. What masses is needed to achieve a stretching force of 5N?

*August 9, 2016*

**Algebra 1**

Thank you

*August 9, 2016*

**Algebra 1**

1. Which is an example of an algebraic expression? A. 4(3+8) B. 18^2 C. 3 - a*** D. 21 x 4 2. Which is an algebraic expression for 5 more than? A. 5z B. z + 5*** C. 5z + 5 D. 5 - z 3. Which word phrase can be used to represent the algebraic expression 4(21 + n)? A. 4 plus the ...

*August 9, 2016*

**Algebra**

The present age of raj and ram is in the ratio 1:3. After 5 yrs rams age wiil be 2yrs more than twice of rajs age . Find their present ages

*August 9, 2016*

**science**

what is the ratio between acceleration and velocity?

*August 9, 2016*

**math**

In the number 8,920,000 the digits in the tens and hundreds places are the least and the same. What are they?

*August 8, 2016*

**Applied Stats**

Based on the data collected by the National Centre for health Statistics and made available to the public in the Sample Adult database, it was found that the percentage of adults who have at some point in their life been told that they have hypertension was 24 percent. Suppose...

*August 8, 2016*

**algebra**

Robert is N years old. Robert's brother is 6 years younger than Robert.

*August 7, 2016*

**West Charlotte **

Rosa has 3 3/4 pounds of dough. She uses 3/4 of a pound for one medium loaf of bread. How many medium loaves of bread could be made from Rosa's dough?

*August 7, 2016*