Sunday

December 21, 2014

December 21, 2014

Total # Posts: 418

**Math **

On a map 1/4 inch represents 20 miles the distance between two cities on the map is 3 3/4 inches how many miles apart are in the two cities?
*December 8, 2014*

**chem**

At a certain temperature, a 19.0-L contains holds four gases in equilibrium. Their masses are: 3.5 g SO3, 4.6 g SO2, 14.0 g N2, and 0.98 g N2O. What is the value of the equilibrium constant at this temperature for the reaction of SO2 with N2O to form SO3 and N2 (balanced with ...
*December 4, 2014*

**chemistry **

Determine the percent by mass of water in your sample of hydrated copper (II) sulfate - CuSO4. xH2O My work I got 10% is this correct?
*December 1, 2014*

**physics PLEASE HELP **

An air column open at one end only is increased in length. The air column first resonates with a given turning fork when the length of the air column reaches 20 cm. The next two consecutive lengths that will resonate with the same tuning fork will measure.
*November 29, 2014*

**physics**

An open ended air column of length 35 cm resonates with a speaker sounding a 500 Hz note. If the air is vibrating in the fundamental mode, what temperature is the air?
*November 28, 2014*

**Physics **

Which of the following statements correctly describes the changes that occur in a sound wave, as it passes from cool air into warmer air? A) speed,wavelength and frequency all increase B) speed, wavelength increase; frequency decreases C) speed, wavelength increase; frequency ...
*November 28, 2014*

**Physics **

If a string is vibrating in four parts, there are points where it can be touched without disturbing its motion. Explain how many points exist
*November 26, 2014*

**physics**

Ok. And for part b i would would divide 353 by 1300
*November 25, 2014*

**physics**

I looked it up and cant find it
*November 25, 2014*

**physics**

I divided 350 by 343 It says 343 is the speed of sound but not for 35degrees?
*November 25, 2014*

**physics**

So for part a i get 1.02 seconds would that be correct
*November 25, 2014*

**physics**

Where did you get 1300 for part b
*November 25, 2014*

**physics **

You call out to your friend who is standing at a distance of 350 m. a) if the temperature of the air is 35 degrees Celsius, find the time when your friend will hear you after you have called her. b) Find the wavelength of your sound if your frequency is 1.3 khz
*November 25, 2014*

**Physics**

A guitar string has a mass of 30g and length of 2m. Find the tension if its density is 0.2kg/m^3
*November 24, 2014*

**physics**

An empty 160 kg elevator accelerates upward at 1.2 m/s 2 . The acceleration of gravity is 9.8 m/s 2 . What is the tension in the cable that lifts the elevator cab? Answer in units of N
*November 9, 2014*

**chemistry **

What type of reaction would CO2 + H2O --> H2CO3 be I think it would be synthesis reaction?
*November 3, 2014*

**chemistry**

But in the question it says Li is a solid and Fe(NO3)3 is aqueous
*November 3, 2014*

**chemistry**

Ok thank you. Yes i wasnt sure which way to do it. I was thinking of following the activity series
*November 3, 2014*

**math**

I need to show my work
*October 22, 2014*

**math**

find the quotient then check your answer 3/14.1
*October 22, 2014*

**Physics**

Spark timer acceleration lab How do you determine the acceleration from the slope of your best fit line?
*October 17, 2014*

**Biology**

which heart beat measurement is most indicative of your general health i think it is your resting heart beat, but im not sure why>
*October 2, 2014*

**Biology**

thank you!
*October 2, 2014*

**Biology**

What are some of the reasons why everyone does not have the same pulse rate at rest? i think it would be age, gender, weight, but im not sure why
*October 2, 2014*

**Biology**

i think it would be age, gender, and weight but i am not sure why?
*October 2, 2014*

**Biology**

What are some of the reasons why everyone does not have the same pulse rate at rest?
*October 2, 2014*

**business**

can you tell me he difference between franchise fee, startup capital and investment required. all of them had different amounts and i searched it up online. but i couldn't understand it because it kept repeating and repeating the same thing but it didn't get to the ...
*September 13, 2014*

**business**

what is a corporate unit? a franchise said that they have 80 franchise units in Canada and 12 corporate units. what are corporate units
*September 13, 2014*

**business**

can you tell me he difference between franchise fee, startup capital and investment required. all of them had different amounts and i searched it up online. but i couldn't understand it because it kept repeating and repeating the same thing but it didn't get to the ...
*September 13, 2014*

**art**

i have an assignment due next next week. its about why some artworks were made. the only one i don't know is, why was the art work empress Theodora and her attendants made? and what are some possible reasons that the artist is unknown.?
*September 10, 2014*

**Algebra**

X=1/2at^2 Solve for a Solve for t Can you please show me how to do this please Thank u
*September 5, 2014*

**Physics**

X=1/2at^2 Solve for a Solve for t Can you please show me how to do this Thank u
*September 5, 2014*

**sanskrit**

plse show me how to write kiki in sanskrit
*August 29, 2014*

**English**

Discuss the manner in which the theories expressed by John Winthrop are in some degree evident in American government and culture today. Can someone tell if my answer is right. In Prospero's America, Walter W. Woodward looks at the exchange of catalytic society to America ...
*July 25, 2014*

**literature homework**

Is my response answer right, doesn't it make sense ?
*July 24, 2014*

**literature homework**

Discuss the manner in which the theories expressed by Winthrop are in some degree evident in American government and culture today. Can Someone read my response and see if I answer it right Winthrop Theory uses the central necessities of disguises and, particularly, the ...
*July 24, 2014*

**homework help**

can you please read my response to : . Is Hester consistent in her rebelliousness? In this story The Scarlet Letter, Hester Prynne to rebel from within the walls of her enemies’ territory. The rebellion is mainly an inner transformation. As she makes her rounds on the ...
*July 16, 2014*

**American Literature**

I don't understand the story and the assignment
*July 7, 2014*

**American Literature**

1. Discuss, in “Sinners in the Hands of an Angry God,” Edwards’ description of God’s wrath and Edwards’ use of the metaphors of storm and thunder, flood and fire.
*July 7, 2014*

**Chemistry**

Which formula represents an organic acid? HCOOCH3 CH3CH2OH CH3COCH3 HCOOH Can you please help me
*June 7, 2014*

**Chemistry**

Which formula represents an organic acid? HCOOCH3 CH3CH2OH CH3COCH3 HCOOH
*June 7, 2014*

**Math**

Is it 0,-9,+3i,-3i
*June 3, 2014*

**Math**

X^4+9x^3+9x^2= -81x Is it 0,-9,-3, and 3
*June 3, 2014*

**Math**

Thank you
*June 3, 2014*

**Math**

Yes I have but how to you find them
*June 3, 2014*

**Math**

5x^4=5x Can you please help
*June 3, 2014*

**Trig**

What is the common ratio, r, for the sequence represented by the formula an = 3(2)^-n? 1/2 2 3 6 Is it 2?
*May 24, 2014*

**Trig**

Given sin θ = −1/2 and sec θ > 0, find the exact value of tan 2θ. Radical 3 Radical 3/2 Negative radical 3 Negative radical 3/2
*May 3, 2014*

**Trig**

Given sin x = 5/13 and 0 < x < pi/2 find the value of sin(π − x). 12/13 5/13 -12/13 -5/13
*May 3, 2014*

**Trig**

What is the sum of the arithmetic series where n=50 , t1=9 and t2=331
*April 29, 2014*

**Trig**

What is the sum of the arithmetic series where n=100 , t1=7 and t2=205
*April 29, 2014*

**Trig **

Find the 20th term of an arithmetic sequence with a=1 and d=1/2
*April 29, 2014*

**Trig**

Find the 6th term of the arithmetic sequence with a9=120 and a14=195
*April 29, 2014*

**Trig**

Write a quadratic equation whose roots are 5 + i radical 2 and 5 – i radical 2 ____ x^2 + _____ x+ ______=0
*April 26, 2014*

**Trig**

Thank you
*April 26, 2014*

**Trig**

If sec A =5/4 and A is an angle in Quadrant IV, find the value of cos A. A. -4/5 B.4/5 C.-5/4 Is it choice A
*April 26, 2014*

**trig**

thanks
*April 10, 2014*

**trig**

A and B are positive acute angles. if sin A=4/5 and cos B=8/17 find the value of tan (A-B) is the answer =43/100
*April 10, 2014*

**Trig**

If 0 ≤ x ≤ 2π, which equation is a line of symmetry for the graph of y = cos x? x = 0 x = 2π x = π y = 0
*March 30, 2014*

**Trig**

On the same set of axes, sketch and label the graphs of the equations y = cos 2x and y = –2 sin x in the interval 0 ≤ x ≤ 2π. How many values of x in the interval 0 ≤ x ≤ 2π satisfy the equation –2 sin x – cos 2x = 3? A.1 B.2 C....
*March 30, 2014*

**Trig**

In ΔABC, a = 19, c = 10, and m∠A = 111. Which statement can be used to find the value of C?
*March 29, 2014*

**Trig**

What is the total number of solutions for the equation 3 tan^2 A + tan A – 2 = 0 in the interval. 0 ≤ A ≤ π?
*March 29, 2014*

**Trig**

If the period of a cosine function is 1/3 what is the frequency of the function?
*March 29, 2014*

**Trig**

The number of values in the interval –π ≤ x ≤ π that satisfy the equation sin x = 2 cos x is 1 2 3 4 0
*March 23, 2014*

**Math**

Which equation is equivalent to 3 ln 2 – ln 4 + 5 ln x = ln 3 + 2 ln 5? ln 2x5 = ln 75 ln (5x + 2) = ln 75 ln 2x5 = ln 13 ln (5x + 4) = ln 96
*February 16, 2014*

**Math**

If f(x) = 2/x+3 and g(x) = 1/x then (g ° f)(x) is equal to
*February 16, 2014*

**Math**

Which equation is equivalent to 3 ln 2 – ln 4 + 5 ln x = ln 3 + 2 ln 5? ln 2x5 = ln 75 ln (5x + 2) = ln 75 ln 2x5 = ln 13 ln (5x + 4) = ln 96
*February 16, 2014*

**Math**

The endpoints of a diameter of a circle are (3, 4) and (7, –2). What is an equation of the circle?
*February 16, 2014*

**Math**

tan(4x − 4)° = cot(3x + 10)°
*February 16, 2014*

**Math**

The parents of twin boys started a college fund when the boys were 5 years old. They decided to invest $6,000 into an account that compounds quarterly at a rate of 8.6% annually. If the parents do not invest any additional money into this fund, how much will each of the boys ...
*February 16, 2014*

**Math**

A car was purchased for $36,730. The following equation can be used to predict the value of the car based on it age, where t stands for the time in years: A = 36730(.82)t. If the car was purchased in March 2002, what will its value be in September 2009? Round your answer to ...
*February 16, 2014*

**Math**

A car was purchased for $36,730. The following equation can be used to predict the value of the car based on it age, where t stands for the time in years: A = 36730(.82)t. If the car was purchased in March 2002, what will its value be in September 2009? Round your answer to ...
*February 16, 2014*

**Math**

The expression log 4 radical a^2/b is equivalent to Please help. Thank you
*February 16, 2014*

**Algebra 2**

Which circle has the largest circumference? x2 + y2 = 8 (x – 3)2 + y2 = 10 (x + 3)2 + (y + 2)2 = 4 x2 + (y – 2)2 = radical 81
*February 13, 2014*

**Chemistry**

Thanks
*January 24, 2014*

**Chemistry**

The half-life of 131I is 8.021 days. What fraction of a sample of 131I remains after 24.063 days? 1/2 1/4 1/8 1/16 Please help. Thank you
*January 24, 2014*

**Trig**

I got choice 3 is that correct
*January 24, 2014*

**Trig**

Use a graphical method to find a solution to the following system of equations in the interval –1 ≤ x ≤ 5: y = x2 – 4x + 2 y = x + 2 The solution set to this system of equations in the interval –1 ≤ x ≤ 5 is {} {(2, 0)} {(0, 2), (5, 7...
*January 24, 2014*

**spanish**

What color is chocolate
*December 16, 2013*

**Global history**

Which of the following provides evidence that imperialism left a lasting impact on many colonial territories? A. Many African and Asian nations are based on former colonial boundaries. B. Many former colonies are still ruled by European governments C. Local languages are often...
*December 16, 2013*

**Global history **

Which of the following summarizes an effect of imperialism? A. Colonial markets were closed to manufactured goods from the colonizing power. B. Land was distributed equally among the main social classes. C. Colonial economies became devoted to manufacturing goods for the ...
*December 16, 2013*

**Global history**

Thank you
*December 16, 2013*

**Global history**

Can you please explain why it is b and not d
*December 16, 2013*

**Global history**

The age of imperialism was marked by A. A decrease in the number of naval ships. B. The expansion of American political influence C. An increase interest in the plight of day laborers D. The reduction of military intervention in other countries I think the answer is b or d. ...
*December 16, 2013*

**physics**

You do not need to find the difference. The second to last step is the answer.
*November 26, 2013*

**Science**

metamorphosis
*November 10, 2013*

**math**

the the mode is the most repeated number,the student had confused the mode and mean
*November 7, 2013*

**Chemistry **

At STP 4 liters of O2 contains the same total number of molecules as 1L of NH3 2L of Cl2 8L of He 4L of CO2
*November 2, 2013*

**Chemisty**

At STP 4 liters of O2 contains the same total number of molecules as 1L of NH3 2L of Cl2 8L of He 4L of CO2
*November 2, 2013*

**Chemistry**

Thank you
*October 27, 2013*

**Chemistry**

Two quantities A and B are directly proportional to each other. The value of A becomes 1/3 as much. What will happen to the value of B
*October 27, 2013*

**Trig**

2x^2+2x>4
*September 29, 2013*

**Trig**

(x+1)(x-4) is greater than or equal to (x-2)^2
*September 23, 2013*

**Math**

Thanks
*September 15, 2013*

**Math**

I don't understand. Then what is the final answer
*September 15, 2013*

**Math**

When mn+m^2-30n^2 is divided by m-5n, what is the quotient. Thank you
*September 15, 2013*

**Math**

When is 15xy+9y^2+6x^2 divided by 2x+3y. Thank you
*September 15, 2013*

**english**

write a sentence on each of the following.[your school premises],[a day at the beach],[the city hustle] and [your saturdays].
*September 10, 2013*

**language arts**

Add silent parterns to the folliwing to create new words. bo_,cli_
*September 7, 2013*

**Math**

Thank you
*September 7, 2013*

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