Thursday

February 26, 2015

February 26, 2015

Total # Posts: 2,896

**math**

Miguel is a cartoonist. Miguel drew 2 cartoon cells in 3 hours. If he keeps drawing at the same rate, about how many cells will he draw in 9 hours?
*January 28, 2014*

**chemistry**

if you dissolve 20mg of alcl3 into 2.0 of a 2.5 molal nacl solution (density 1.08kg/l), what would be the mass concentration (ppm(weight)) of al3+ in the resulting solution?
*January 26, 2014*

**Fractions**

(2/4)= 1/2 8 red barrettes = 1/2 of Julias collection since half of Julia's barrettes are red, and she has 8 red barrettes you multiply 8*2 to get 16 (2 or (2/1) is the inverse fraction of (1/2)) to double check your answer.. 16*(2/4)
*January 26, 2014*

**science/writing **

How are stink bugs harmful to crops?
*January 16, 2014*

**add maths**

A function f is defined by f:x→1-2x.Obtain expressions in the same form for f^3.
*January 13, 2014*

**add maths**

Two functions f and g are defined by f:x→3x+2 and g:x→x^2-2.Obtain expressions for fg and gf.Find the value(s) of x for which f=g? fg=gf?
*January 13, 2014*

**maths**

The production of natural rubber in Malaysia in July 2004 was 108315 tonnes,a rise of 4.9% compared to the previous month.Calculate the production of natural rubber in June 2004 in kg.Give your answer in standard form,correct to 4 significant figures.
*January 12, 2014*

**add maths**

Function of g is g:x→x-1 over x+2,x not equal to -2. Find g^2
*January 12, 2014*

**maths**

The scale of a map is 1:25000.Find the actual length of a road,in cm,which is measured 7.8 cm on the map.Express the answer in standard form.
*January 11, 2014*

**maths**

Yeah..same as my answer sheet !thanks:)
*January 11, 2014*

**maths**

The total population of the earth was estimated to be 6.42 billion people.Given that the total land surface area of the earth is about 1.5×10^8km^2.Find the average number of people living in 1 km^2 of land on earth,correct to 2 significant figures.Thanks a lot for ...
*January 11, 2014*

**maths**

Ohh..i got it..divide two..thanks a lot!
*January 11, 2014*

**maths**

Steve,how to get 4.9?
*January 11, 2014*

**maths**

A large pipe has a diameter of 9.8×10^2cm.Water flows in the pipe at a speed of 5m s^-1.Find the volume in m^3,of water that flows out from the pipe every second,correct to 2 significant fogures.[Take pai as 3.142]
*January 11, 2014*

**writing thesis statments**

I am stuck on what would be a good thesis statement for my topic of, " How does drug addiction affect America as a whole?
*January 11, 2014*

**health**

whats the answer?
*January 10, 2014*

**rational and irrational**

is 0.3 pi rational,67/79 , 75 pi,0.3 pi,13 pi
*January 9, 2014*

**math**

nadia has taken 3 exams and her average score so far is 80.If she gets 100,a perfect score on the remaining 2 exams what will her new average be ?
*January 9, 2014*

**math**

omar has taken 4 exams and his average score so far is a 79.If he gets 100,a perfect score,on the remaining two exams,what will his new average be ?
*January 9, 2014*

**EARTH SCIENCE**

#1 Is A) i just took the exam.
*January 7, 2014*

**GUESS MY RULE WITH LETTERS**

X=4 y=17
*January 6, 2014*

**semi colons and colons**

this is what i ate for breakfast an apple and a bowl of ceral
*January 1, 2014*

**PHI103**

Assume you are given a sound argument. What do you know about it? (Points : 1) It is deductive. It is valid. Both A and B None of the above
*December 22, 2013*

**PHI103**

"10 is less than 100; 100 is less than 1,000; consequently, 10 is less than 1,000" is an example of a (Points : 1) sound deductive argument. valid inductive argument. sound inductive argument. weak inductive argument.
*December 22, 2013*

**PHI103**

To criticize a deductive argument logically, one might: hit the person making the argument. show one of the premises is false. show one of the premises is true. show the conclusion follows validly from the premises.
*December 22, 2013*

**algebra **

a survey at your school found that 792 in 1,220 students have a cell phone. what percent of the students in have a cell phone? round to the nearest hundredth where necessary 6.49% 54.04% 64.92% (i think that's the answer) 79.20%
*December 15, 2013*

**chemistry**

how many moles of nitrogen would be needed to make 10.0 ammonia?
*December 12, 2013*

**government**

Why is the formal amendment process so difficult and complicated?
*December 11, 2013*

**AP Chemistry**

I HAVE NO CLUE
*December 8, 2013*

**MATH**

WHAT IS PRECALC
*December 4, 2013*

**physics**

Two liters of nitrogen combine with 6 L of hydrogen to form 4 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia?
*November 22, 2013*

**physics**

The pressure in each of your car tires is 1.80 105 Pa. The mass of your car is 1660 kg. Assuming that each of your tires bears one-quarter of the total load, what is the contact area of each tire with the road?
*November 22, 2013*

**physics**

A plane flies due north (90° from east) with a velocity of 100 km/h for 3 hours. During this time, a steady wind blows southeast at 30 km/h at an angle of 315° from due east. After 3 hours, where will the plane’s position be relative to its starting point? Show ...
*November 21, 2013*

**physics**

A plane flies due north (90° from east) with a velocity of 100 km/h for 3 hours. During this time, a steady wind blows southeast at 30 km/h at an angle of 315° from due east. After 3 hours, where will the plane’s position be relative to its starting point? Show ...
*November 21, 2013*

**physics**

1. A man pulls a crate with a rope. The crate slides along the floor in the horizontal direction (x direction). The man exerts a force of 50 N on the rope, and the rope is at an angle q. Describe how the force components (Fx, Fy) change as the angle increases from 0° to 90...
*November 20, 2013*

**physics**

3. You travel from New Orleans, Louisiana, with the following vectors: • New Orleans à Point A: q = 180°, Δd = 483 km • Point A à Point B: q = 106°, Δd = 347 km • Point B à Point C: q = 106°, Δd = 347 km Remember: ...
*November 20, 2013*

**Physics**

A plane flies due north (90° from east) with a velocity of 100 km/h for 3 hours. During this time, a steady wind blows southeast at 30 km/h at an angle of 315° from due east. After 3 hours, where will the plane’s position be relative to its starting point? Show ...
*November 20, 2013*

**Physics**

Two spheres of equal mass are thrown against a wall with equal velocities. One sphere rebounds with 75% of its original speed, while the other sticks to the wall. Which imparted a greater impulse to the wall, the sticky ball or the rebounding ball? Justify your answer.
*November 19, 2013*

**Physics**

A 400 gram block slides down a 30 degree incline from rest and reaches the bottom with a speed of 4.50 m/s. If the height through which the block falls is 2.0 meters, find the average frictional force that acted on the block.
*November 19, 2013*

**Physics**

A liquid of density 1.23 × 103 kg/m3 flows steadily through a pipe of varying diameter and height. At location 1 along the pipe the flow speed is 9.23 m/s and the pipe diameter is 1.07 × 101 cm. At location 2 the pipe diameter is 1.71 × 101 cm. At location 1 ...
*November 14, 2013*

**Spanish**

Can someone review my answers please 1. Alfredo dice que el viejo auto de Marisol todavía__ (ser/estar) seguro. Marisol piensa que quiere un auto nuevo pero no___ (ser/estar) segura. 2. Marta _____ (ser/estar) aburrida de pasar seis horas en la biblioteca. 3. Ella ...
*November 12, 2013*

**history**

Thank you!
*November 11, 2013*

**history**

In the election of 1912, Teddy Roosevelt's Bull Moose Party platform was built around what he called the A. New Freedom. B.(New Nationalism). C. Square Deal. D. Fair Deal. Correct?
*November 11, 2013*

**math**

800
*November 6, 2013*

**literature**

what is the purpose of the odan tree in nigeria
*November 5, 2013*

**Calculus-Applied Optimization Problem**

If a total of 1900 square centimeters of material is to be used to make a box with a square base and an open top, find the largest possible volume of such a box.
*October 31, 2013*

**Chemistry**

Ok I thought that before I submitted the question but I thought that seemed too easy! That you so much for your help though :)
*October 30, 2013*

**Chemistry**

well i got 5 for the first part but I thought that the delta E was the same for both because the wavelengths were pretty much the same, so i got 1 as the final but thats only because that made both of the equations exactly the same
*October 30, 2013*

**Chemistry**

A ground state hydrogen atom absorbs a photon of light having a wavelength of 94.96 nm. It then gives off a photon having a wavelength of 95 nm. What is the final state of the hydrogen atom? I think I got 5 for an answer, but I am not sure if I did this right or not
*October 30, 2013*

**Chem**

ok, i think i got 5 for an answer do you think this is correct??
*October 30, 2013*

**Chem**

A ground state hydrogen atom absorbs a photon of light having a wavelength of 94.96 nm. It then gives off a photon having a wavelength of 95 nm. What is the final state of the hydrogen atom?
*October 30, 2013*

**Spanish**

I wanted to know if i used the right verbs Complete the sentences with the correct forms of conseguir, ir, pensar, querer, or suponer. 1. Nosotros (blank) de excursión a las montañas, Toño. 2. ¡Yo (blank) que vas a dormir todo el fin de semana! 3. No...
*October 29, 2013*

**Spanish**

I need help to revise these sentences, thanks Form complete sentences using the verbs and nouns provided. Add any other necessary words. 1. María Elena / mostrar / fotos / a sus amigas 2.Martín y su hermano / empezar / lecciones de natación / martes 3. ...
*October 29, 2013*

**Spanish**

I need someone to heck if this is correct Complete each sentence with the conjugated yo forms of the verbs in the word bank. hacer poner salir suponer traer 1. Todos los días salgo___ de la universidad a las tres y voy a casa. 2. Llego a mi casa a las cuatro y_pongo__ ...
*October 29, 2013*

**math**

what type of numbers is found an odd number of times in the table
*October 23, 2013*

**math**

what type of numbers is found an odd number of times in the table from 1 to 9?
*October 23, 2013*

**Counting and probability **

I have no idea on how to do this, please help! Maya is invited to a wedding. She's gets all the items (dress pants, shoes, necklaces and a scarf) she finds suitable to wear out of her closet. A) Maya has two dress pants and four blouses. how many outfits does she have ...
*October 23, 2013*

**physics**

a plane flies due north at 225km/h. a wind blows it due east at 55km/h. what is the magnitude and direction of the plane's resultant velocity?
*October 19, 2013*

**physics**

a plane flies due north at 225km/h. a wind blows it due east at 55km/h. what is the magnitude and direction of the plane's resultant velocity?
*October 19, 2013*

**math**

A painter leans a 15 foot ladder against the side of a house. The top of the ladder touches the house at a height that is 3 feet more than the distance from the house to the bottom of the ladder. How far is the bottom of the ladder from the house?
*October 12, 2013*

**english**

1. Which of the following sentences is correctly punctuated? A. The local police asked the F.B.I. to assist with the case. (B). Mr. Jones visited the YMCA before becoming a member. C. Mary remembered to buy milk didn't she? D. The company held it's annual party at the ...
*October 11, 2013*

**Math**

i don't know help me please
*October 7, 2013*

**Physics**

The systems shown below are in equilibrium (with m = 4.80 kg and θ = 27.0°). If the spring scales are calibrated in newtons, what do they read? Ignore the masses of the pulleys and strings and assume the pulleys and the incline are frictionless. scale in (c) scale in...
*October 3, 2013*

**Math (Algebra 2)**

Source: At the end of 1993, scientists tracked 1550 nonfunctional components in orbit and projected 42 such objects are added each year. Suppose that an average of 15 of these are brought back to Earth each year. Question: Write the function "R" that models the total...
*September 28, 2013*

**math**

16+9=25 Answer is 9
*September 28, 2013*

**physics**

A baseball player slams a fastball towards left field. The ball is hit 1.00 m above the plate at an initial velocity of 36.0 m/s at a 30 degree angle above the horizontal. The left field wall is 113 m away and is 3.00 m high. Is this a home run shot or not?.
*September 26, 2013*

**physics**

A baseball player slams a fastball towards left field. The ball is hit 1.00 m above the plate at an initial velocity of 3.0 m/s at a 30 degree angle above the horizontal. The left field wall is 113 m away and is 3.00 m high. Is this a home run shot or not?.
*September 26, 2013*

**math**

Find two numbers the exact answer is between 6 x 7,381
*September 25, 2013*

**U.S hISTORY**

WHAT TWO SOLUTIONS DID EFFICIENCY PROGRESSIVES OFFER TO MAKE CITY GOVERNMENT MORE EFFICIENT
*September 25, 2013*

**english**

Write the verb "see" in the present perfect tense. Use the pronoun "I" as the subject.? A. I have seen. B. I am seen. C. I am seeing. is it C?
*September 20, 2013*

**Physics**

A vector has an x-component of −25.5 units and a y-component of 56.0 units. Find the magnitude and direction of the vector.Direction ° (counterclockwise from the +x-axis)
*September 20, 2013*

**Physics**

Vector A has a magnitude of 29 units and points in the positive y-direction. When vector B is added to A, the resultant vector A + B points in the negative y-direction with a magnitude of 15 units. Find the magnitude and direction of B?
*September 20, 2013*

**Physics**

Vector A has a magnitude of 29 units and points in the positive y-direction. When vector B is added to A, the resultant vector A + B points in the negative y-direction with a magnitude of 15 units. Find the magnitude and direction of B?
*September 20, 2013*

**EKG**

This is a true and false question: 1. Patient motion my create artifact that looks like an atriall arhythmia. 2. The ECG tracing represents a 3 dimensional view of the heart's electric activity.
*September 19, 2013*

**Consumer Math: Insurance**

Choose as many answers as apply. Which of the following statements are true of ordinary whole-life insurance policies? A. The insured pays premiums on this type of insurance until his death. B. Ordinary whole life insurance covers the insured for the stated term of the policy...
*September 18, 2013*

**Anatomy Physiology 1**

1) How would the effects of a collagen vascular disease that affected only the collagen in reticular fibers differ from the effects of collagen fibers on organs & tissues? 2) Does fibrocartilage provide an articular surface as smooth as original hyaline cartilage? Why or why not?
*September 17, 2013*

**Math**

On May 23, Samantha Best borrowed $40,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact interest method. What was the amount of interest on the loan? Using the scenario from the previous question, calculate the maturity value of the loan. ...
*September 16, 2013*

**physics**

A ball is thrown directly downward with an initial speed of 7.00 m/s, from a height of 30.4 m. After what time interval does it strike the ground?
*September 13, 2013*

**math**

Find and Interpret the median and the interquartile range for each distribution. The median: 31. Here's the set of numbers: 10, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 23, 24, 25, 27, 31, 34, 34, 35, 35, 36, 37, 38, 39, 39, 41, 43, 44, 45, 48, 49, 62, 73
*September 12, 2013*

**Physics**

A model rocket is launched straight upward with an install speed of 57.6 m/s. it accelerates with a constant upward acceleration of 1.70m/s^2 until its engines stop at an altitude of 240m. A. What is the maximum height reached by the rocket? The acceleration of gravity is 9....
*September 11, 2013*

**Physics**

A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 190 mi/h in 2.70 s. a.) Find the average acceleration of the plane. b.) Assuming the acceleration is constant, find the distance the plane moves.
*September 5, 2013*

**Math 4th grade **

Write the word form and tell the value of the underline digit for each number 488, 423, 046
*August 23, 2013*

**Spanish 2**

Give both the affirmative and negative "tú" commands for each of the following verbs. poner
*August 20, 2013*

**Economics**

Explain the statement “scarcity may be the single most significant word in the field of economics.”
*August 14, 2013*

**Physics (Kinematics)**

An airplane accelerates down a runway at 100 m/s2 for 15 s until it finally lifts off the ground. Determine the distance traveled before take-off.
*August 13, 2013*

**Physics (Kinematics)**

A car starts from rest and accelerates uniformly for 10 seconds over a distance of 200 m. Determine the acceleration of the car.
*August 13, 2013*

**Physics (Kinematics)**

A race car accelerates uniformly from 10 m/s to 50 m/s in 2 seconds. Determine the acceleration of the car and the distance traveled.
*August 13, 2013*

**veterinary technician**

1. in the keyword search on EDSeek's home page, enter the following statements: NASA* AND Mars*. based on the results from this search, choose the best answer to this question. which of the following is not a listed document type? A:diary B:book review C:report D:article
*August 9, 2013*

**veterinary technician**

which one of the following practices is allowed under copyright law?
*August 9, 2013*

**Math**

2000+500 or two thousand five houndred sorry its spelled wrong.
*August 9, 2013*

**Chemistry**

Butyric acid (HC4H7O2) is a weak acid with the stench of rancid butter 1.) write the equation for the dissociation of HC4H7O2 in water 2.)the pH of .5 M HC4H7O2 is 2.56 calculate Ka of butyric acid 3.) Write the equation for the hydrolysis of C4H7O2- 4.) Calculate Kb for ...
*July 30, 2013*

**algebra **

Marcus has 72 feet of fencing. He wants to build a rectangular pen with the largest possible area. What should the dimensions of the rectangular pen be to maximize the area?
*July 28, 2013*

**english**

ideas on the subject of sharing a car with a sibling.
*July 18, 2013*

**english**

1. Choose the answer that displays the correct spelling of the plural form of the words in parentheses. How many (praying mantis) will we have to import to fight the (grasshopper)? 2. Choose the answer that displays the correct spelling of the plural form of the words in ...
*July 5, 2013*

**ALGEBRA**

A satalites escape velocity is 6.5 mi/sec, the radius of the earth is 3960 miles and the earth's gravitational constant(g) is 32.2 ft/sec^2 How far is the satelite from the surface of the earth?
*July 1, 2013*

**physics**

A rescue helicopter is lifting a man (weight = 925 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 2.59 m/s2? (b) What is the tension during the remainder of the rescue when ...
*June 30, 2013*

**Chemistry**

Please help in any way that you can. Very small spherical crystals called quantum dots are being investigated for use in electronic devices. a. Calculate the mass of a quantum dot of pure silicon that has a diameter of 4nm. b. If you made a 3.5nm diameter quantum dot of pure ...
*June 29, 2013*

**Chemistry (How do I calculate) **

Calculate the Molar Enthalpy of Neutralization (ΔHn) in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: The temperature change equals 6.92°C, 50.0 mL of 1.00 M concentration of Acid 50.0 mL of 1.00 M ...
*June 28, 2013*

**physics**

what is the potential energy of a 500g flag at the top of a 5.5m tall flag
*June 24, 2013*

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