Thursday

April 24, 2014

April 24, 2014

Total # Posts: 68,383

**Math**

In Mrs. Julie's classroom the ratio of boys to girls is 12 to 8. If the entire elementary school has a population of 400 students, how many would you expect to be girls?

**Math**

The Look Alike Doll Company makes dolls that resemble people. Pam's mom is having a doll made to look alike Pam. Pam is 5 feet tall. The doll will be 2 1/2 feet tall. What is the ratio of the doll's height to Pam's height?

**Math**

Jason drew two circles. the diameter of the larger circle is twice the diameter of the smaller circle. What is the ratio of the circumference of the smaller circle to the circumference of the larger circle?

**Math**

The height of an elephant is a scale drawing is 4cm. The scale in the drawing is 1 cm to 50 in. What is the actual height of the elephant?

**Math**

The population of some countries has a relative growth rate of 2.75% per year. At this rate, how many years (to the nearest tenth of a year) will it take the population to double?

**US government**

over time _____ has gained power at the expense of ____.

**Math**

your class is conducting an experiment to study geometric sequences. The class forms a line. the first person takes a whole pizza,divides it in half, keeps half, and hands it to the next person. The next people in line do the same with there peices. Which portion does the seve...

**DATABASE.PLEASE!!**

yes dodo

**Math**

A physics exam consists of 9 multiple-choice questions and 6 open-ended problems in which all work must be shown. If an examinee must answer 5 of the multiple-choice questions and 2 of the open-ended problems, in how many ways can the questions and problems be chosen?

**survey math 140**

a textbook search is considering 19 books for possible adoption. the committee has decided to select 5 of the 19 for furture consideration in how many way can id do so

**physic angular momentum and torque**

Radius = 4 feet; height = 6 feet

**algebra**

The height of a ball dropped from a tall building is modeled by the equation d(t) = 16t2 where d equals the distance traveled at time t seconds and t equals the time in seconds. What does the average rate of change of d(t) from t = 2 to t = 5 represent?

**alegbra 1**

A company manfactures an alarm clock. Three weeks ago the company had 250 on hand. Two weeks from now it will have 500. Assume the company will continue to make the clocks at the same rate.

**Finance**

10. A new factory at Arcata requires an initial outlay of $3.5 million to be paid immediately. The factory will last for eight additional years, after which it can be sold for a salvage value of $2,000,000. Sales will be $800,000 during the first year of operation and will gro...

**chemistry**

278.35g Ba3n2 to mole Ba3N2

**Geometry**

concrete costs 105 per cubic yard. plato is making a rectangular concrete garage floor measuring 33 feet wide by 6 inches thick. how much will the concrete cost?

**ALGEBRA**

EVA IS JUMPING ON A TRAMPOLINE .HER HEIGHT H AT TIME T CAN BE MODELED BY THE EQUATION H=-16T^2+20T+6.WOULD EVA REACH A HEIGHT OF 14 FEET

**Chemistry**

excess magnesium is reacted with 45 grams of sulfuric acid. 9.5 liters of hydrogen gas are collected understand conditions of temperature and pressure. what is the percentage of hydrogen sulfate and of water in the acod solution?

**Maths**

Plz somebody help !!!

**Maths**

What is a shape that has a 24cm2 area and a 26cm perimeter. The sides have to be 5,4 and 3cm long!!!

**Need 8 grade math help quick please!**

Thank you!

**math**

A boat needs to travel south at a speed of 20 km/h. However a constant current of 6 km/h is flowing from the south-east. Use vectors to find: a.the equivalent speed in still water for the boat to achieve the actual speed of 20 km/h. b the direction in which the boat must head ...

**3rd grade math**

I Dont no and Im fiFt grade

**Mathematics**

Tn-1,Tn-2,Tn-3

**Mathematics**

Give the first three terms of the sequence of 1.Tn+1=Tn+n

**Science URGENT**

for second part C6H12O6 Total atoms in 1 molecule = 6 + 12 + 6 = 24 2C6H12O6 6 carbon atoms, 12 helium atoms, and 6 oxygen atoms then you have 24 atoms times the 2 at the beginning making 48 atoms

**Science URGENT**

Hey MAD 2 Hydrogen atoms + 1 oxygen atom = H2o 3H2O : 9 atoms 5H2O = 15 atoms

**Math**

Can 26x^2 be written as x*sqrt26?

**Math**

What is 7 sqrt 8 - 2 sqrt 8?

**Chemistry **

copper(1) chloride reacts with hydrogen sulfide. if 9.90 grams of copper(1) chloride and 10.2 grams of hydrogen sulfide are reacted together, what is the limiting reactant?

**Math**

If an orange is twice as many as a pear. How many pears are there?

**Math**

Fay is making 13 bows to sell. She has 36 feet of ribbon. If each bow requires 2 1/4 feet of ribbon, how much ribbon will not b used

**FINANCE**

Gamma Ltd is not expecting to pay dividends for three years, at the end of year four, a dividend of $2.45 is planned and dividends are expected to be constant forever after that. The required rate of return for Gamma Ltd equity is j4 = 12.25% pa. What is the expected price (cu...

**math**

jared bought a package of pens containing 20 pens. If 3/4 of the pens had black ink, how do you determine the number of pens with black ink?

**Physics**

f = m a ___ a = f/m c1 ___ a = 150/46 c2 ___ a = 250/46 answers are in m/s^2

**Economics and Statistics**

A stockbroker placed the following order for a customer: • 50 shares of Kaiser Aluminum preferred at $100 a share • 100 shares of GTE preferred at $27.20 a share • 20 shares of Boston Edison preferred at $12.20 a share What is the weighted arithmetic mean price ...

**Count Of Monte Cristo**

Not yet. I meant the movie

**Count Of Monte Cristo**

How does the Count of Monte Cristo set up Mondego & Villefort? How does he frame Villefort and what happens to Villefort?

**math**

I got 14%. Is this correct, Ms. Sue?

**math**

What percent of 600 is 84?

** math**

What percent of 25 is 23?

**Chemistry**

a.) How much energy is emitted in each alpha decay of plutonium-234 if 234Pu, 234.0433mu and 230U, 230.0338mu. b.) The half-life of plutonium-234 is 8.8 hrs. How much heat is released by the alpha decay of a 1 micro-gram sample of plutonium-234 in a 24-hour period? For part a,...

**Chemistry**

The main radioisotope in a banana is potassium-40, a beta emitter with an activity of 242 Bq/g. An average medium banana has about 320 mg of potassium and the natural abundance of potassium-40 is .0117%. Calculate the value of the BED in a.) Gy b.) Sv Assume 5.02 nGy/Bq

**Math 117**

nobody knows.

**Business and Economics **

The weights (in grams) of the contents of several small bottles are 8, 4, 3, 6, 7, 1 and 5. What is the sample variance? 5.81 4.33 5.67 2.22

**Math **

Try to make 24 using -,+,•,/ 1,5,4,3 & 3,12,4,1 & 10,9,7,2

**Calculus**

when t=90?

**Calculus**

A weight oscillates in a vertical motion according to the position function y(t)=-5 cos(t). Assuming t≥0, when will the acceleration if the weight be zero for the first time?

**Calculus**

An object in free fall has its distance from the ground measured by the function d(t)=-4.9t^2 +50, where d is in meters and t is in seconds. If gravity is the only acceleration affecting the object, what is gravity's constant value?

**physics**

For the purposes of this problem, there are three parts to the figure, and the center of mass of each one is shown in the drawing. These parts are: (1) the torso, neck, and head (total mass = 40.4 kg) with a center of mass located on the y axis at a point 0.403 m above the or...

**physics**

Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.78x1011 m apart. The larger of the two stars has a mass of 4.19x1030 kg, and its center is 1.75x1011 m from the system's center of mass. What is the mass of the smaller star?

**health**

The one area you can't control to reduce your chances of stroke, heart disease, or diabetes is

**physics**

A 6.26-g bullet is moving horizontally with a velocity of +344 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The bulle...

**physics**

The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0430 kg and is moving along the x axis with a velocity of +5.41 m/s. It makes a collision with puck B, which has a mass of 0.0860 kg and is initially at rest. The collision is not he...

**physics**

For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air Because of the air jets, the friction impeding the horizontal motion of the platform is negligible. Each time the heart beats, blood is pushed out of the heart in a ...

**Social Studies**

Use the biblical quotations below to answer the following question: 5 He set the earth on its foundations; it can never be moved.—Psalm 104:5 5 The sun rises and the sun sets, and hurries back to where it rises.—Ecclesiastes 1:5 Based on the Biblical quotations above...

**Social Studies**

what attitude would french revolutionaries take toward the men on the steps? A.the men should be respected B.the men should carry more of the burden C.the men are helpless and should be taken care of D.the men are divine and should be worshiped

**Social Studies**

How was France's Ancien Régime challenged by Enlightenment philosophies? The monarchy and nobility increased their status and prestige. King Louis XVI began challenging the power of the Catholic Church. ----> Lower- and middle-class citizens became more insistent...

**Social Studies**

government should express the will of the whole people?

**Social Studies**

The excerpt below is Article 6 of the "Declaration of the Rights of Man," the document that founded the French Republic on August 26, 1789. Use this excerpt below to answer the following question: Law is the expression of the general will. Every citizen has a right t...

**World History**

So is it C?

**Physics**

Object A has a mass of 443 kg. Object B has a mass of 356 kg. If they are separated by 3.4 m, what is the magnitude of the gravitational force between them?

**Maths**

A box contains pns and pencils in the ratio 6 : 5. There are 24 pens. How many pencils are there?

**math**

(Weighing produce). A supermarket has three employees who package and weigh produce. Employee A records the correct weight 98% of the time. Employees B and C record the correct weight 97% and 95% of the time, respectively. Employees A, B, and C handle 40%, 40% and 20% of the p...

**Math**

(Weighing produce). A supermarket has three employees who package and weigh produce. Employee A records the correct weight 98% of the time. Employees B and C record the correct weight 97% and 95% of the time, respectively. Employees A, B, and C handle 40%, 40% and 20% of the p...

**Calculus**

If y=cos x, what is y^(6) (x)?

**statistics**

A committee consists of five men and four women. Two people are selected at random from the committee. What is the probability that one man and one woman will be selected?

**Algebra 2**

Simplify the rational expression (x^2+xy-2y^2)/(x^2+3xy+2y^2)

**English**

Do I use an apostrophe after the A or not? "He got 5 As on the final exam." I've heard that capital letters are made plural only by adding an s, but my textbook gives this example-How many A's did you write on the paper?

**Algebra**

But it has two variables?

**Algebra**

Simplify the rational expression (x^2+xy-2y^2)/(x^2+3xy+2y^2)

**finance**

23

**finance**

Polycorp has a current dividend of $5.00 due tomorrow and is expected to pay a dividend $5.50 at the end of the first year. Its dividend is expected to grow at 8% pa for the following year. Dividends are then expected to grow at 4% pa for another two years. Then they are expec...

**history**

Thanks Writeacher for your help

**history**

Good morning can you give me some facts about the effects of the world war 1 on New Jersey please help me

**FINANCE**

Now that they have accumulated a deposit of 55,000 Jack and Jill take out a housing loan to purchase a home. The house costs $755,000. It is to be repaid in equal monthly instalments over a term of 30 years. The interest rate quoted by the bank is an effective annual rate is 7...

**FINANCE**

A perpetuity with the first annual cash flow paid at the beginning of year 4 is equivalent to receiving $103,000 in 15 years’ time. Assume that the perpetuity and the lump sum are of equivalent risk and that j12 = 14.32% pa is the appropriate interest rate. How much is th...

**FINANCE**

Many creditors of your firm offer early payment discounts. The accounts payable supervisor does not believe in paying early “as the bank overdraft rate of j12 = 8% pa is more than the average 2% offered for payment within 10 days from date of invoice”. The supervisor...

**FINANCE**

Think .026

**FINANCE**

A ninety day bank bill with 90 days to maturity has a price of $99427.95. What is the effective annual yield implied by this price and maturity? Be careful I am not asking for the annual nominal yield, which by convention is normally quoted in financial markets. FACE VALUE OF ...

**FINANCE**

Polycorp has a current dividend of $5.00 due tomorrow and is expected to pay a dividend $5.50 at the end of the first year. Its dividend is expected to grow at 8% pa for the following year. Dividends are then expected to grow at 4% pa for another two years. Then they are expec...

**FINANCE**

Polycorp Treasury a company in the land of Zanadu is holding a parcel of Zanadu Government Bonds with a face value of $2,000,000. The bonds were issued seven years and nine months ago and still have two years and three months to maturity. They pay a coupon rate of interest of ...

**FINANCE**

Gamma Ltd is not expecting to pay dividends for three years, at the end of year four, a dividend of $2.45 is planned and dividends are expected to be constant forever after that. The required rate of return for Gamma Ltd equity is j4 = 12.25% pa. What is the expected price (cu...

**FINANCE**

Mooncorp Insurance has quoted you an annual premium to insure your car of $3100. You are offered a 15% discount if you pay the lump sum immediately. They also offer an alternative payment method. You can pay the account in full by making 12 equal beginning of the month payment...

**Chemistry **

a 4.000grams sample of aluminum metal is added to a solution containing 5.000grams of dissolved iron chloride. the reaction results in the formation of aluminum chloride and metallic iron. when the reaction is complete, unreacted aluminum remains, and this unreacted aluminum i...

**physics**

A baseball of mass m1 = 0.32 kg is thrown at a concrete block m2 = 6.25 kg. The block has a coefficient of static friction of μs = 0.71 between it and the floor. The ball is in contact with the block for t = 0.195 s while it collides elastically. What is the minimum veloc...

**Calculus**

Use a tangent line approximation at x=0 to estimate the value of sin(-0.1). I got 0.1

**irsc**

a 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air resistance. if the 10-kg rock falls with acceleration a, what is the acceleration of the 20-kg rock?

**Math**

Jayce wants to paint her room Duke Blue.Her room is 12 ft long ,12 ft 10inches wide, and 10ft high.If Dylan insists she paint her ceiling white, about how many cans of blue paint will she need to buy to paint the walls.One can covers 120 square feet. Ignore the windows and doo...

**L.A**

Read this sentence from New Directions.When we came from school, the wall was slick with white.Which meaning of the word slick is used in the sentence above? A.impressive and efficient<---- B.wet and slippery

**Health**

Dr.Margo Maine suggests that people exercise for the three F's which include.

**Calculus**

If position is given by p(t)=t^2 +1, find the velocity v(t) at t = 2. I'm completely lost as to where to even start with this problem.

**science**

Na2SO4(aq)+CaI2(aq)→CaSO4(s)+2NaI(aq) as net ionic

**physics**

A simple pendulum consists of a small object of mass 1.2 kg hanging at the end of a 2.07 m long light string that is connected to a pivot point. Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string makes an angle of 6.59 de...

**Finance**

7 months

**Finance**

One of your customers is having trouble paying her account. You agree to a repayment schedule of $300 per month. You charge 1% per month interest on late accounts. If the current balance is $2000, how long will it take to pay off the debt?

**Psychology **

What make perception a cognitive rather than a simply sensory skill?

**Physics**

suppose that you drop the ball from a height of about 2m above the floor, releasing it from rest. on the axes that follow, sketch your predictions for the velocity-time and acceleration-time graphs of the ball's motion. assume that the positive y direction is upward

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