Friday

May 6, 2016
Total # Posts: 96,220

**science **

a constant force applied at an angle of 20 above the horizonal , pulls a 200 kg block, over a distance of 3 m, on a rough, horizontal floor. the coefficient of kinetic friction is 0.2 show that work done by the kinetic frictional force on the block can be written as Wfk = ( -...
*May 2, 2016*

**English**

what passage?
*May 2, 2016*

**Science**

In which of these situations is convection most likely the main form of heat transfer? Warm air from a heater on the first floor of a house moves to the upper floors. The sides of a metal pan become hot when the pan is placed on a stove burner. A person gets a sunburn from ...
*May 2, 2016*

**Physics**

T=2pi*sqrt[L/(g-a)] B) 3.14
*May 2, 2016*

**physics**

to go from town a to b a plane must fly about 1780km at an angle 30° west of north . how far north of A is B ?
*May 2, 2016*

**science**

A 0.1 M NaOH solution is used for holder 50, or ml of a 0.100 M solution of acetic acid. Calculate the pH of the solution after the addition of 50.0 ml of sodium hydroxide
*May 2, 2016*

**Math**

sorry I meant 0.9 and it's not 9% nor 10%
*May 2, 2016*

**Math**

Financial Mathematics why is it that a question states that a person buys a car for R122 000 and pays 10% of the cost but then the answer to it they have multiplied the amount by 0.09 which is 9%?
*May 2, 2016*

**Physics**

A 1.8 kg piece of a metal initially at a temperature of 180oC is dropped into the water with mass of 14 kg. The water is in a container made of the same metal with mass 3.6 kg. The initial temperature of the water and container is 16.0oC, and the final temperature of the ...
*May 1, 2016*

**Math**

Mrs.thomas bought a new blanket shaped like an equilateral triangle that measures 3 feet on each edge.how long should the ribbon be?
*May 1, 2016*

**accounting**

Below is budgeted production and sales information for Flushing Company for the month of December: Product XXX Product ZZZ Estimated beginning inventory 32,000 units 20,000 units Desired ending inventory 34,000 units 17,000 units Region I, anticipated sales 320,000 units 260,...
*May 1, 2016*

**math **

how much sugar am i using if i use 3 tablespoons and want it in teaspoons? 1/2 teaspoons = 0.16 tablespoons
*May 1, 2016*

**Math**

Potatoes are sold in 2.25 pound bag. how many whole bag must tanisha buy in order to have enough potatoes?
*May 1, 2016*

**Exponential Modeling**

The landscaper pours 200 gallons of herbicide in a pond. The herbicide degrades 10% each week. How much will be in the pond after 1 week?
*May 1, 2016*

**Exponential Modeling**

A species of beetles grows 32% every year. Suppose 100 beetles are released into a field. How many beetles will there be in 10 years?
*May 1, 2016*

**Exponential Modeling**

A can of soda in 1972 costs $0.10, by 2012 it cost $1.25. Find the rate at which the cost of a can of soda increases over this time period.
*May 1, 2016*

**Exponential Modeling**

4.25 x 75 = $318.75 Profit = $88.75
*May 1, 2016*

**Exponential Modeling**

You invest $230 to start a sandwich stand and decide to charge $4.25 per sandwich. How much money will you make if you sell 75 sandwiches?
*May 1, 2016*

**Exponential Modeling**

Wait, just realized my mistake. It's actually 18,134 is the total loss of the value of the car. 25,000 - 18,134 = 6,866 (The car's value now)
*May 1, 2016*

**Exponential Modeling**

How did you get 16,250? You probably need to recheck your answers.
*May 1, 2016*

**Exponential Modeling**

1,250 A trick I've learned is by removing 10% each time, and that's easy because all you have to do is move the number over once to the right. 25,000 -> 2,500 2,500 * 3 = 7,500 10% of 25,000 is 2,500 / 2 = 1,250 Or 5% of 25,000 7,500 + 1,250 = 8,750 8750 x 3 = 26,...
*May 1, 2016*

**Exponential Modeling**

A certain vehicle loses 35% of its value each year. Compute the value of the vehicle at the end of the 3rd year if the car has an initial value of $25,000
*May 1, 2016*

**Language Arts**

Thanks Ms. Sue, that was very quick too. :)
*May 1, 2016*

**Language Arts**

In Act II, Scene 4 of "A Christmas Carol: Scrooge and Marley", what are the two women and the man selling to Old Joe? A. items they stole from Scrooge's room after he died - (I believe it's this one.) B. items Scrooge gave them before he died C. items ...
*May 1, 2016*

**Bio**

The differences between two molecules include the type of sugar that forms a section of the molecules and the identity of one of the four nitrogenous bases that make up another section of the molecules. These two molecules are A. proteins B. lipids C nucleic acides D. complex ...
*May 1, 2016*

**Bio**

How is information for a specific protein carried on the DNA molecule? A. As a sequence of nucleotides B. In the double helix shape of the condensed chromosome C.In the ratio of adenines to thymines D.As a pattern of phosphates and sugars A C D are all statements that make ...
*May 1, 2016*

**Life orientation**

Assess the extent to which bad road use has a direct impact on the physical,emotional,social and economic aspects to the family,the community and the country
*May 1, 2016*

**Bio**

Does diffusion and osmosis move from high to low concentration?
*May 1, 2016*

**Geometry ( helllppp pleaaassse )**

A point on the ceiling of a room is 12ft. from each of the vertices of a triangle on the floor whose legs are 6ft. A and 8ft. respectively. find the length of the ceiling. 2. With a 12ft. pole marked in feet, how can one determine the foot of the perpendicular let fall to the...
*May 1, 2016*

**algebra tricky q**

Clem Colfax had $10 to buy groceries. He needed milk at 70 cents a carton, bread at 60 cents a loaf, breakfast cereal at 50 cents a box, and meat at $1.50 a pound. He bought twice as many cartons of milk as loaves of bread, the number of boxes of cereal was one more than the ...
*May 1, 2016*

**algebra**

Graph the direct variation y=−1.5x. Using the graph, find: Reference b The value of x when y=−3; 4.5; 6
*May 1, 2016*

**Exponential Modeling**

The half-life of a radioactive substance is one day, meaning that every day half of the substance has decayed. Suppose you have 100 grams of this substance. How many grams of the substance would be left after a week?
*May 1, 2016*

**Physics **

An engine works between the two temperatures 200 C and 120 C. Calculate its efficiency in percentage?
*May 1, 2016*

**Math**

The sum of the first three terms is 24 and the sum of the next three terms is 51. Find the first term and the common difference
*May 1, 2016*

**Dissociation Equations Answer Check**

1. Write the equation for the dissolution of potassium iodide in water. KI(s) + H20 --> K+ (aq) + I- (aq) 2. Write the equation for the dissolution of magnesium bromide in water. MgBr2(s) + H20 --> Mg2+ (aq) + 2Br- (aq)
*May 1, 2016*

**Exponential Modeling**

293
*April 30, 2016*

**chemistry **

how do i figure out grams/tablet if I am in units of mol/L? >_>
*April 30, 2016*

**chem**

uhh whoah not 150 lol I calculated 1.67g per 30 mLs, but i'd like some verification :)
*April 30, 2016*

**chem**

176.12 g/ mol I meant to write
*April 30, 2016*

**chem **

0.283 M solution X 176.12 g = 50 g/L how many g per 30 mL? 150?
*April 30, 2016*

**Geography**

If functions of a city or town _____ in number of importance it will grow in ____ if they decrease the population will _____ I can't find where this is stated anywhere in the powerpoint I was given to look at
*April 30, 2016*

**Geography**

State where would these take place (rural or urban) Cottage industry-Rural Commercial industry-urban
*April 30, 2016*

**math**

Lets look at a sample 4/8 reduced by 50% 2/8 reduce den by 25% 2/2 = 1 4/8 is 1/2 so compare it to 1 it is doubled. 1/2 divided by 1/4 = 1/2 x 4 = 2
*April 30, 2016*

**math**

By what percent will a fraction decrease if its numerator is decreased by 50% and its denominator is decreased by 25%?
*April 30, 2016*

**math**

Median is the middle range is largest- smallest 5 is the range so 1/2 is below and 1/2 is above 4 1/2 ----7------9 1/2 so. it cannot b 1
*April 30, 2016*

**maths**

The sum of 2 number is 103 .If one number is 37 . Find the other number
*April 30, 2016*

**HEALTH PLZ HELP**

thx a lot Reed you have helped me and i got 0/15 on it! THX!
*April 30, 2016*

**Life orientation grade 12**

identify human rights violation
*April 30, 2016*

**Life orientation grade 12**

Pls HELP Me the impact of corruption and fraud
*April 30, 2016*

**Math**

A number is selected from 5 t0 14 inclusive.what is the probability that it is either an even number or a factor of 40
*April 30, 2016*

**rio claro west secondar**

[0.4] to the power 2 multiply by 3.7
*April 30, 2016*

**math**

i don't think that is the right answer
*April 30, 2016*

**math**

Stock worth $60 a share dropped in value by 20% on Monday, then, again by $10 the next Tuesday and, finally, increased by 55% the following Friday. What was the final price of a share?
*April 30, 2016*

**math**

By what percent will a fraction decrease if its numerator is decreased by 50% and its denominator is decreased by 25%?
*April 30, 2016*

**math**

the answer is incorrect
*April 30, 2016*

**math**

A store gets a bucket of eggs for $16.20 and sells a dozen eggs for $3.50. If there are 450 eggs in the bucket, by what percent has the store increased the price per dozen eggs?
*April 30, 2016*

**math**

how do you adjust the fraction?
*April 30, 2016*

**math**

If a gang of eight rob a bank, what percent of the loot belongs to three of the robbers? What percent belongs to them if two of the gang are killed? By what percent does each robber’s share increase?
*April 30, 2016*

**math**

thank you, thank you, thank you,
*April 30, 2016*

**math**

A store manager wishes to reduce the price of her fresh ground coffee by mixing two grades. If she has 50 pounds of coffee which sells for $1.20 per pound, how much coffee worth 80 cents per pound must she mix with it so that she can sell the final mixture for $1.00 per pound?
*April 30, 2016*

**maths**

For each sequence, find the next four terms 2,4,6,8...
*April 30, 2016*

**Maths**

The Gcd ofthree numbers is 10and theirL.C.M is1500 two of the numbers are 30and 60 what are the other numbers?
*April 30, 2016*

**Solid Mensuration**

one diagonal of a cyclic quadrilateral coincides with a diameter of a circle whose area is 36pi cm^2. If the other diagonal which measures 8cm meets the first diagonal at right angles, find the area of quadrilateral. Show your solutions
*April 30, 2016*

**Solid Mensuration**

How did you got your answer. I need a complete solution please.
*April 30, 2016*

**chemistry**

For the oxidation- reduction reaction equation given here, 2Na+S -> Na2S indicate how many electrons are transferred in the formation of one formula unit of produce.
*April 29, 2016*

**Algebra**

f(x)=sqrt(x+4)+sqrt(4-x) Find X and Y intercepts
*April 29, 2016*

**Algebra**

For which k will the graph of f(x)=x^2−kx+k^2 cross the x-axis twice?
*April 29, 2016*

**History**

explain how i should answer this
*April 29, 2016*

**History**

Pattern your letter like the Declaration of Independence, but be sure to write everything in your own words. In this way, you will show you understand the meaning of the declaration. In your letter, be sure to include the following: reasons for writing beliefs about government...
*April 29, 2016*

**physics**

A sled is moving at a constant speed down a surface inclined at 45.0° with the horizontal and travels 30 meters in 4 seconds. Calculate the vertical velocity of the sled at the end of 4 seconds.
*April 29, 2016*

**physics**

A sled is moving at a constant speed down a surface inclined at 45.0° with the horizontal and travels 30 meters in 4 seconds. Calculate the vertical velocity of the sled at the end of 4 seconds.
*April 29, 2016*

**Science**

A desert is hot and has less life. A forest has neutral to humid environment and has hundreds of species.
*April 29, 2016*

**Math (Probability)**

For the first one, I think it is B P(red and red) = 12/20 * 8/13 (Don't forget to add the total number of balls) Second one is C P(1 then 10) = 6/20 * 2/19 Since you take one note without replacing, the total number of notes is reduced by 1 from 20 to 19 The third one is A...
*April 29, 2016*

**Math**

Just divide 6 feet by 4 3/4 inches and round down
*April 29, 2016*

**alg**

I would multiply 4 in to get 4x^2-24x+20 Then factor out 4 4(x^2-6x+5) Complete the square inside the bracket 4[(x-3)^2-9+5] = 4[(x-3)^2 -4]= 4(x-3)^2 -16 I would think it is +16 needed to complete the square
*April 29, 2016*

**math**

Is this division?
*April 29, 2016*

**Cape he loped high school**

Let total no. of lemonade and orange juice cups sold be x and y respectively. x+y=100 2x+3y=240 Solve for x and y :)
*April 29, 2016*

**science**

It always help to draw a diagram Hooke's law F=kx x is the extension of the spring Force F is acting on the stone when it is still in the catapult, travelling distance x. x=F/k=36/72 Initial velocity u = 0 "Final" velocity v = ? Acceleration a = F/m - mg ...
*April 29, 2016*

**history**

Which of the following is true of Japan today?
*April 28, 2016*

**college mathematics**

Determine whether each pair of triangles is congruent. b. Triangle 1: angle 53 , side 28 meters, and angle 37 Triangle 2: angle 53 , side 28 meters, and angle 37
*April 28, 2016*

**college mathematics**

Determine whether each pair of triangles is congruent. a. Triangle 1: sides 8 inches, 11 inches, and 14 inches Triangle 2: sides 11 inches , 14 inches, and 8 inches
*April 28, 2016*

**Physics**

Upthrust = weight of object = 2.8*g N
*April 28, 2016*

**math**

Basically they're just asking you to simplify the expression Combine like terms means combining terms with x and normal constants together (4/5 x + 3) - (1/4 x - 1) = 4/5x - 1/4x + 3 + 1 = etc etc
*April 28, 2016*

**physics**

Sorry the formula is 4/3 pi r^3
*April 28, 2016*

**physics**

Use the formula density=mass/volume Find volume of the star I assume that the star is a sphere so volume = 4/3 pi r^2 From the volume, you can find radius :)
*April 28, 2016*

**Alias robert**

a car starting from rest is accelerated at 2m/s(square) for 10s, then moves at constant velocity for 20s and then decelerates at 1m/s(square), finally stops. how far does it travel during its trip? please help me! I need in solution for that problem
*April 28, 2016*

**math**

Jake spent 3/8 of his money on a DvD and 1/2 of what was left on a sandwich. He now has $6.25. How much money did he start with?
*April 28, 2016*

**math**

Madison Square Garden in New York City is built in the shape of a circle. Its diameter is 404 feet and it accommodates 20,234 spectators. To the nearest tenth, of a square foot how much area is there for each spectator?
*April 28, 2016*

**Math**

I meant 3/8 of his money
*April 28, 2016*

**Math**

Jake spent 3/80 of his money on a DvD and 1/2 of what was left on a sandwich. He now has $6.25. How much money did he start with?
*April 28, 2016*

**math**

Brian's kite is flying at the end of 82 of string. His end of string, is 3 feet off the ground. the angle of elevation of the kite is 55 degrees. What is the height of the kite?
*April 28, 2016*

**science**

A 9-volt battery supplies 0.125 A of electrical current to a toy car. The car has a mass of 0.100 kg and the coefficient of friction between the tires and the ground is 0.4. If the car is 100% efficient, how far will the car travel in 10 seconds?
*April 28, 2016*

**science**

A 2 kg mass is hanging from a spring with a constant of 1500 N/m. What is the elongation of the spring?
*April 28, 2016*

**Math**

A rocket is launched from the top of a 50 foot cliff with an initial velocity of 120 feet per second. The height, h, of the rocket after t seconds is given by the equation h=-16t^2 + 120t+ 50. How long after the rocket is launched will it be 10 feet from the ground?
*April 28, 2016*

**Math**

13.333 Choices are 10, 12, 15, 16
*April 28, 2016*

**Math**

There were 12 new trucks brought to the sales lot on Monday. Three of them were red. At this rate if 40 trucks are brought to the lot by Thursday, how many of them will be Red?
*April 28, 2016*

**Math**

Ann earned $30 babysitting and $15 painting a fence.How do her earnings compare with the cost of a $70 chemistry set?
*April 28, 2016*

**Geometry**

What is rs
*April 28, 2016*