Tuesday

March 31, 2015

March 31, 2015

Total # Posts: 79,577

**statistics**

a hat contains 40 marbles, 16 of which are red and are green. if one marble is randomly selected out of this hat, what is the probability that this marble is red?
*February 22, 2015*

**College Physics**

where must a 500 N weight be hung on a uniform beam w/ a length of 5 m and weighs 150 N so that the girl standing on the other end is 1/4 as much as the boy standing at the other end?
*February 22, 2015*

**Geometry**

One of two similar triangles has an area of 1/4 times than that of the other. What is the ration of the trangles' perimeter? (I know that the answer is 1:2, but i dont why that is the answer :( )
*February 22, 2015*

**Math**

One of two similar triangles has an area of 1/4 times that of the other. What is the ratio of its perimeter of the triangles? (I know the answer but I don't know the solution, please explain. Thank you very much!!)
*February 22, 2015*

**Life Orientation**

NFSAS
*February 22, 2015*

**statistics**

A consumer advocacy group claims that the mean amount of juice in a 16 ounce bottled drink is not 16 ounces, as stated by the bottler.
*February 21, 2015*

**Calculus**

Evaluate: the integral from pi/8 to pi/6 csc2xcot2xdx
*February 21, 2015*

**Calculus**

Evaluate by U-substitution: the integral of xcubedroot(x-2) dx
*February 21, 2015*

**maths**

Saudi Arabia has proven oil reserves of 2.63 1011 barrels. Kuwait has proven oil reserves of 9.78 1010 barrels. Canada has proven oil reserves of 1.789 1011 barrels. What are the combined proven oil reserves of the three countries?
*February 21, 2015*

**maths**

costs $12.50 to see a movie at a theater near Jason’s house. It costs only $1.95 to rent a DVD from an online service. A DVD player costs $125. To the nearest whole number, how many movies must Jason watch on DVD instead of at the theater before he recovers the cost of ...
*February 21, 2015*

**chemistry**

A dry ethene exerted a pressure of 680mmhg at 17degree celcius.what pressure would be exerted if the sample is collected over water at 17degree celcius? (s.v.p at 17degree celcius=14.0mmhg)
*February 21, 2015*

**algebra**

noj has the following test scores 69 74 76 84 91 his teacher will allow him to retake the test on which he scored lowest noj wants an average of at least 82 determine the least number of additional points noj must score on the retest
*February 21, 2015*

**maths**

. Louisa has $4,500 in her savings account. She has to choose between two savings plans. Under plan A, she will increase her account balance by 10% per year. Under plan B, her account balance will increase by $525 per year. If she plans to keep her money in savings for 3 years...
*February 21, 2015*

**maths**

Sid and Libby are planning to sell pies at a local fair. They spend $200 to rent a table at the fair. Their costs for ingredients, other supplies, baking, and packaging are $3.00 per pie. Sid and Libby plan to sell the pies for $8 each. How many pies must they sell at the fair...
*February 21, 2015*

**physics**

A shuffleboard disk is accelerated at a 9.7m/s^2 from rest to a speed of 6.0m/s. What distance does the disk travel?
*February 21, 2015*

**English**

the second sentence should be: First, place the mayo evenly on both sides of the bread. sentence three needs to have a comma between bread and place. sentence 4 should be like this: Take the other slice of bread and place it on top of the tomato. Sentence 5 should be: Place ...
*February 21, 2015*

**Physics**

Three capacitors (3.83, 5.89, and 12.9 μF) are connected in series across a 58.0 V battery. Calculate the voltage across the 3.83 μF capacitor.
*February 21, 2015*

**College Physics**

A 3.0 m long light board with negligible weight is supported at each end by cables. a painter weighing 900 N stands 1.o m from the left cable. Find the tension in each cable.
*February 21, 2015*

**college physics**

The tensions in the cable are 300 N and 600 N
*February 21, 2015*

**college physics**

a 3m long light board with negligible weight is supported at each end by cables. a painter weighing 900 N stands 1m from the left cable. find the tension in each cable,
*February 21, 2015*

**grammar**

Can a rabbit run fast? yes,it can. (Is)
*February 21, 2015*

**financial management**

you have $42,180.53 in a brokeage act & you plan to deposit an additional $5000 at the end of every future year until your accout totals $250,000. you expect to earn 12% annually on the account. How many years will it take to reach your goal?
*February 21, 2015*

**Physics**

Three capacitors (3.83, 5.89, and 12.9 μF) are connected in series across a 58.0 V battery. Calculate the voltage across the 3.83 μF capacitor.
*February 20, 2015*

**accounting**

which one would not likely employ the specific identification method for inventory costing? hardware store farm implement dealership music store specializing in organ sales antique shop
*February 20, 2015*

**math **

There were 15.37 million licensed drivers in Texas in 2009 and 14.54 million in 2004. Find a formula for the number, N, of licensed drivers in the US as a function of t, the number of years since 2004, assuming growth is (a) Linear N(t)= million drivers (b) Exponential N(t)= ...
*February 20, 2015*

**History**

Yes they are all correct
*February 20, 2015*

**History**

All are right!!
*February 20, 2015*

**Algebra **

The population of San Francisco was 776,733 in the 2000 United States Census. What is the predicted population growth in 2010 if the expected growth rate is 15%? A. 2,015,568 B. 3,142,318 C. 924,369 D. 562,394
*February 20, 2015*

**SS**

Thanks!
*February 20, 2015*

**SS**

So, there aren't any laws in the USA stating that the language of instruction has to be English, right?
*February 20, 2015*

**SS**

Are there schools in the USA for people who don't speak English?
*February 20, 2015*

**French Questions**

1. Je trouve ça gentil(le). Can I choose the form of gentil based on whether ça is male or female? 2. Does que + elle = qu'elle?
*February 20, 2015*

**Physics**

Use the wave equation frequency*wevelength=speedoflight
*February 20, 2015*

**Chemistry**

And, you are totally wrong. Try again. Nonpolar molecules have zero dipole moment.
*February 20, 2015*

**physics**

force=qvXB, right?
*February 20, 2015*

**physics**

A 25,000 kg rocket ship near the surface of the Earth accelerates upwards due to a constant 1.25 MN of thrust from its engine. A simple pendulum on the ship is observed to complete 100 full swings in 75.0 s. What is the length of the string? 1. For a simple pendulum: T = 2&#...
*February 20, 2015*

**math**

you mean: if a sing is 2.5 in height and.2.5. in width will the area of the sign be greater than or less than 2.5 square feet Search Results Questions on Word Proble
*February 20, 2015*

**Probability**

part-2 ans:= 1/3
*February 20, 2015*

**math**

I'm confused can you please show me how to work it out on paper. Thank you.
*February 20, 2015*

**math**

A pyramid has a height of 5 in. and a surface area of 90 in ^2. Find the surface area of a similar pyramid with a height of 10 in. Round to the nearest tenth, if necessary. A.360 in. ^2 B.180 in. ^2 C.22.5 in. ^2 D.3.6 in. ^2 I think the answer is A but I don't know how to...
*February 20, 2015*

**Math**

Many parents do say Thank you. The math is difficult most days. This home on the other side of the screen does say," Thank you kindly. A Family,
*February 19, 2015*

**Math**

Please help me with the question that I posted before this one. Thank you.
*February 19, 2015*

**Math**

A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, it necessary. I know the answer is 3.8 feet because I got it wrong. But why is that the answer. If you cab please help me ...
*February 19, 2015*

**Biology**

Which of the following solutions bathing a red blood cell would be considered isotonic? Which of the following solutions bathing a red blood cell would be considered isotonic? a solution containing 300 mM NaCl a solution containing 150 mM glucose a solution containing 400 mOsm...
*February 19, 2015*

**Math**

840 stickers were given to 42 children. ⅔ of the children were boys, and each of them received the same number of stickers. Each girl received twice as many stickers as each boy. How many stickers did each girl receive? Explain how you got your answer. Sorry I posted ...
*February 19, 2015*

**MAth**

840 stickers were given to 42 children. ⅔ of the children were boys, and each of them received the same number of stickers. Each girl received twice as many stickers as each boy. How many stickers did each girl receive? Explain how you got your answer.
*February 19, 2015*

**Finance**

You have been living in the house you bought 6 years ago for $250,000. At that time, you took out a loan for 80% of the house at a fixed rate 25-year loan at an annual stated rate of 9.5%. You have just paid off the 72th monthly payment. Interest rates have meanwhile dropped ...
*February 19, 2015*

**Chemistry**

A 100.0 g sample of ice at -15°C is heated until it is converted to water vapour at 120.0°C. Calculate the total energy change.
*February 19, 2015*

**Finance**

You are interested in a new Ford Taurus. After visiting your Ford dealer, doing your research on the best leases available, you have three options. (i) Purchase the car for cash and receive a $1,900 cash rebate from Dealer A. The price of the car is $19,000. (ii) Lease the car...
*February 19, 2015*

**physics **

You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 1.88 m and the cannon is aimed at a 44◦ angle from the ground. ...
*February 19, 2015*

**math**

A cylinder is rolled three complete revolutions to create a rectangular shape 32 inches long and 12 inches wide. Write an expression for the area of the rectangle in terms of the diameter of the cylinder. Show how you could use this expression to find a formula for the surface...
*February 19, 2015*

**Finance**

Ok thanks for your help
*February 19, 2015*

**Finance**

To which option does the 4% interest rate go....all or the last two?
*February 19, 2015*

**Finance**

What is the net cost today of the cheapest option?
*February 19, 2015*

**Finance**

You are interested in a new Ford Taurus. After visiting your Ford dealer, doing your research on the best leases available, you have three options. (i) Purchase the car for cash and receive a $1,900 cash rebate from Dealer A. The price of the car is $19,000. (ii) Lease the car...
*February 19, 2015*

**Finance**

You have been living in the house you bought 6 years ago for $250,000. At that time, you took out a loan for 80% of the house at a fixed rate 25-year loan at an annual stated rate of 9.5%. You have just paid off the 72th monthly payment. Interest rates have meanwhile dropped ...
*February 19, 2015*

**Physics**

A wheel 32.6 cm in diameter accelerates uniformly from 247 rpm to 378 rpm in 6.54 s. How far will a point on the edge of the wheel have traveled in this time
*February 19, 2015*

**Math **

If Javier bought 48 sports cards and 3/8 are baseball cards. How many are baseball cards
*February 19, 2015*

**physics**

You begin pushing the car forward from rest. Assume that your car has a mass of 809 kg. Neglecting friction, how long will it take you to push your car up to a speed of 3.93 m/s on a level surface if you exert a constant force of 218 N on it?
*February 19, 2015*

**Government**

Which amendment is the most under used? Why?
*February 19, 2015*

**math**

If 3000 dollars is invested in a bank account at an interest rate of 9 per cent per year, find the amount in the bank after 5 years if interest is compounded annually
*February 19, 2015*

**science**

I mean is the answer B
*February 19, 2015*

**science **

this muscle helps to transport blood to and from the heart A. smooth muscle B. cardiac muscle C. skeletal muscle D. involuntary muscle. Is it D
*February 19, 2015*

**Math**

Humans usually have 20 baby teeth which are replaced by 32 adult teeth Raul said he has lost 6/20 of his baby teeth. Write two fraction equivalent to this number explain how you came up with the fraction
*February 19, 2015*

**thete**

A sample of beach sand contains sand particles of different colors, small pebbles, and also shells. Each component contains different metals and minerals. The pebbles and shells can easily be separated from the sand. Which term or terms could be used to describe this sample of...
*February 19, 2015*

**Art**

Yea it is D
*February 19, 2015*

**organic chemistry**

nj
*February 19, 2015*

**ALGEBRA**

thanks
*February 19, 2015*

**Geometry**

You make a scale drawing of a tree using the scale 5 in. = 27f ft. If the tree is 67.5 ft. tall, how tall is the scale drawing
*February 19, 2015*

**Geometry II**

I'm working on it; just wasn't thinking.
*February 19, 2015*

**Geometry II**

What? How?
*February 19, 2015*

**Geometry II**

A conveyor belt carries supplies from the first floor to the second floor, which is 12 feet higher. The belt makes a 60° angle with the ground. How far do the supplies travel from one end of the conveyor belt to the other? Round your answer to the nearest foot. 21 ft 7 ft ...
*February 19, 2015*

**Calculus**

On planet Calculi, acceleration due to gravity is -20 ft/sec^2. A ball is thrown upward with an initial velocity of 40ft/sec from an initial height of 50. a) Write the equation for the height of the ball, s(t), at time t. b) Find the velocity when the ball hits the ground. c) ...
*February 19, 2015*

**Science**

3 D the two exposed sides of the magnet have similar poles.
*February 19, 2015*

**Science**

Sorry. you didn't help
*February 19, 2015*

**Science**

what did made on this
*February 19, 2015*

**chemistry**

An aqueous solution at 25 °C is 10.0% HNO3 by mass and has a density of 1.051 g/mL. What is the pH?
*February 19, 2015*

**Chemistry**

a. 2.1*10^-7 b.4.85*106-32 these are correct
*February 19, 2015*

**Chemistry**

The above answer is wrong.
*February 19, 2015*

**Chemistry**

a. 1.6 b.7.8*10^-6
*February 19, 2015*

**physics**

The engine of a racing car of mass m delivers a constant power P at full throttle. Assuming that the friction drag force on the car is proportional to the velocity: Fdrag = -cv where c is a positive constant.What maximum speed can be attained by the car on level ground?
*February 19, 2015*

**physics**

The engine of a racing car of mass m delivers a constant power P at full throttle. Assuming that the friction drag force on the car is proportional to the velocity: Fdrag = -cv where c is a positive constant.What maximum speed can be attained by the car on level ground?
*February 19, 2015*

**Math**

I made graphs and th enext step is to create equations... Write the equation of each cycle in the form y=sin(bx+c). What is the Period and Phase Shift for the ophysical, emotional, and intellectual cycles? Feb. 13th, 2015 is at the origin. I dont' exactly get what a period...
*February 18, 2015*

**math**

The principal ordered four pizzas for the twelve students of the month. If each pizza has 8 pieces, what is the ratio of pieces of pizza to students of the month? Reduce your answer to lowest terms.
*February 18, 2015*

**Math**

How you know that 15/30 is greater than 1/3 but less 2/3
*February 18, 2015*

**Math-Biorhythms**

Write the equation of each cycle in the form y=sin(bx+c). What is the Period and Phase Shift for the ophysical, emotional, and intellectual cycles? Feb. 13th, 2015 is at the origin. I dont' exactly get what a period is and where you get the b and c values. Any help would ...
*February 18, 2015*

**chemistry**

Consider a solution containing 0.47 M HOCl and 0.67 M NaOCl for the next two questions. The Ka for HOCl = 3.5E-8. What is the pH of this solution? Now calculate the pH of this solution after 0.15 mol of NaOH is added to 1.00 L of the solution. Assume that the volume does not ...
*February 18, 2015*

**Quick chemistry help**

What is the precipitate color for Na3PO4+CaCl2?
*February 18, 2015*

**Physics**

Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands four times as far from the base of the building from which it was thrown as does the other stone. Find the ratio of the height of the taller building to the height ...
*February 18, 2015*

**math **

Alyssa estimates she needs 3 hours of repair work. She chooses the company that is less expensive for the 3 hour job. How much will Alyssa spend on the roof repair?
*February 18, 2015*

**science**

hi its me again I don't think this is going to help seing that this was in feb but I just got %100 9 is correct because your probley in Conexus or (Connections Academy)
*February 18, 2015*

**science**

heres mine 1.2 2.4 I know what three is and its 3 H2O2 4.2 5.4 6.1 7.3 8.2 and 4 9.1 10.2 and 3 But in not sue on 9 so don't get mad :) hope it helps ;
*February 18, 2015*

**Math**

1.) What is the sum of 5/6 + 2/3 A.) 1 1/3 *** B.) 1 1/2 C.) 1 2/3 D.) 1 3/4
*February 18, 2015*

**life orientation**

*February 18, 2015*

**math**

what does it mean WHAT IS YOUR OPINION
*February 18, 2015*

**language arts**

so what is it yalll
*February 18, 2015*

**language arts**

so what is it
*February 18, 2015*

**language arts**

im not il put it in my own words
*February 18, 2015*

**language arts**

A limerick uses meter and rhyme, providing the poem with a distinctive lilting rhythm. A limerick is... ...light verse consisting of a stanza of five lines, rhyming aabba... It also has a rhythm easily identifiable: 3-3-2-2-3. See Laura Black's limerick: There once was a ...
*February 18, 2015*

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