Friday

August 22, 2014

August 22, 2014

Total # Posts: 1,355

**algebra**

Please I need help! Solve and simplify: x^2+14x-4=0
*November 10, 2011*

**Math**

Describe how to draw a line that passes through the origin and has a slope of 3/5.
*November 9, 2011*

**college math excursions**

what is the next number sequence for 0,10,24,56,112,190
*November 8, 2011*

**physics**

6600 N
*November 7, 2011*

**english**

Can somebody help me restate my thesis please. statement for the conclusion. My thesis is: An analysis of the literary devices in Katy Perry " Fireworks" and Miley Cyrus " The Climb" reveals Miley Cyrus creates a better argument for how every person is an ...
*November 3, 2011*

**math**

F(x) = /x-2/ (absolute value) Please show me to to graph this equation.
*November 1, 2011*

**math**

for F(x) = /x-2/ (absolute value) When you graph this problem, does it have a straight line or a "v" line?
*November 1, 2011*

**chemistry**

Hi everyone, Why are metals more reactive in acids? Thanks
*October 29, 2011*

**natural disaster**

if volcanos and earthquakes, why do people choose to live in the area where it occurs the most?
*October 28, 2011*

**data management**

1) show that a) 2(2n-1 C n-1) = (2n Cn) b) n(2n C n) = (n+1)(2n C n+1)
*October 28, 2011*

**english**

is " but I will not allow anyone to succeed hanging clouds over me" a metaphor or paradox or is it something else? is "there's a light in me, that shines brightly" a metaphor? " Iwill rise steadily sailing out of their reach" a paradox? if im ...
*October 28, 2011*

**english**

can somebody tell where the poetic devices are located in the song cant take that away by mariah carey? such as metaphor, mood paradox etc. Mmmmh Whoaaa They can say, Anything they want to say, Try to bring me down, But I will not allow anyone to succeed hanging clouds over me...
*October 28, 2011*

**data management**

1) solve: a) (2n+1C2) = (nC2)sqaured b) 12(nC2) = n!
*October 28, 2011*

**Data management**

1)SOLVE: a) 2nP3 = 2(nP4) b)6(n+1P2) = 3nP2 2) If (nC12 = (nC8), find (nC17) and (22Cn) 3)simplify. a) n(squared) (n-2)! - n(n-2)! / n! b) (nC2) - (nCn-2) 4)If nPr - 506 and (nCr_ = 253, find n and r. 5) If (28C2r)/(24C2r-4) = 225/11, find r.
*October 27, 2011*

**College Math**

Make 300 mL of a 0.4M NaOH solution.
*October 27, 2011*

**College Chemisrty**

There are 140 g of H2SO4 in 400 mL of a solution. What is the molarity?
*October 27, 2011*

**Data management**

1) consider the number of grid paths from the orgin in a coordinate graph to each of the following points: a) (4,7) b) (3,7) c) (4,6) 2) simplify: (n-r)! / (n-r+1)! 3) solve (n+2)!/ (n-1)! = 210
*October 27, 2011*

**math**

Suppose your business has a special checking account used just for paying the phone bill. The balance is $1040.00 this month. Next month the balance will be $995.80, after that it will be $951.60, and on the third month the balance will be $907.40. Write a rule to represent ...
*October 27, 2011*

**math**

a function is (always, never or sometimes) a relation.
*October 27, 2011*

**Data management**

1) In how many ways can 12 distinct objects be seperated into three equal piles? 2) In how many ways can 25 students be assigned to 4 distinguishable study groups if at least 6 students must be in each group? 3) in how many ways can 4 students be assigned to 9 class periods if...
*October 27, 2011*

**Math**

Lloyd makes an hourly wage of $9.50 per hour. Every 6 months he receives a $0.50 per hour raise. Write a rule that describes his raise and determine how much he will be paid after 4 years.
*October 27, 2011*

**math**

You budget $100 each month for parking. Each day you use the downtown parking lot. It costs $5. Write a rule to represent the amount of money left in the monthly budget as a arithmetic sequence. How much money is left in you budget after you have used the downtown parking lot ...
*October 25, 2011*

**math**

You start an investment account with $3000 and save $100 each month. Write a rule to represent the total amount of money you invest in the account as an arithmetic sequence. How much money will you have invested after 12 months?
*October 25, 2011*

**arithmetic**

The initial term of an arithmetic sequence is 5. The eleventh term is 125. what is the common difference of the arithmetic sequence?
*October 25, 2011*

**Statistics**

1. Consider a population with µ=73.6 and 0 = 5.38 (A) Calculate the z-score for x =72.7 from a sample of size 45. (B) Could this z-score be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?
*October 25, 2011*

**math**

you want to take an 8-ft.wide piece of plywood through a 36-inch-wide door. What is the minimum possible height for the door to allow youto fit the plywood?
*October 24, 2011*

**math**

two cars leave the same point at noon. one car travels north and the other car travels east. suppose the northbound car is traveling 40mph, and after two hours, the two car are 100 miles apart.how fast is the other car going?
*October 24, 2011*

**math**

two cars leave the same point at noon. one car travels north and the other car travels east. suppose the northbound car is traveling 40mph, and after two hours, the two car are 100 miles apart.how fast is the other car going?
*October 24, 2011*

**Statistics**

Consider a population with µ=73.6 and 0 = 5.38 (A) Calculate the z-score for x =72.7 from a sample of size 45. (B) Could this z-score be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?
*October 24, 2011*

**math**

hello ya im helping my son homework.regarding estimation to get reasonable range. Three classes collected aluminum cans for recycling .one class collected 42 cans,another collected 56 cans,and the third class collected 64 cans .what is a reasonable range of the number of cans ...
*October 23, 2011*

**math**

hello ya im helping my son homework.regarding estimation to get reasonable range. Three classes collected aluminum cans for recycling .one class collected 42 cans,another collected 56 cans,and the third class collected 64 cans .what is a reasonable range of the number of cans ...
*October 23, 2011*

**Statistics**

Find the normal approximation for the binomial probability that x = 5, where n = 12 and p = 0.7. Compare this probability to the value of P(x=5) found in Table 2 of Appendix B in your textbook.
*October 20, 2011*

**HUM/111**

identify two possible strategies that Thomas Hutchinson or Samuel Adams, or both, likely used to develop and improve his thinking prior to taking a stand and acting according to his beliefs.
*October 14, 2011*

**Physics**

I have the same problem and that previous answer is wrong.
*October 12, 2011*

**Ap Chem**

thanks and i understand. i appreciate your write up!
*October 9, 2011*

**Ap Chem**

Consider the following reaction at 1000°C:CO(g) + 3H2(g) CH4(g)+ H2O(g) At equilibrium, the following concentrations are measured: [CO] = 0.0613 M, [H2] = 0.1839 M, [CH4] = 0.0387, [H2O] = 0.0387 M. Calculate the value of Kc for this reaction. Calculate the value of Kp. ...
*October 9, 2011*

**Ap Chem**

Why is it possible for Kp to be less than Kc? If this is the case then when Kc>1 it favors products, but if Kp <1 than how can that reaction favor products? Or does that rule only apply for Kc
*October 9, 2011*

**Ap Chem**

Why is it possible for Kp to be less than Kc? If this is the case then when Kc>1 it favors products, but if Kp <1 than how can that reaction favor products? Or does that rule only apply for Kc
*October 9, 2011*

**math**

3/4-1/3z=1/4 5/6c-2/3c=1/3 please show step by step Thanks!
*October 2, 2011*

**math**

3/4 - 1/3z= 1/4 please show step by step to ans.
*October 2, 2011*

**algebra**

2(a-4)+15=13 Please show step by step
*October 2, 2011*

**chemistry**

4NH3 + 5O2 → 4NO + 6H2O 2NO + O2 → 2NO2 3NO2 + H2O → 2HNO3 + NO In this process, the NO made in the last reaction is recycled back into the second reaction and used as a reactant. In the end, all of the NO produced is recycled back so that when the ...
*September 29, 2011*

**Algebra I**

How do you solve the following literal equation: xp + yp = z
*September 29, 2011*

**science[physics]**

why is the pressure more on ground when a person is walking than when he is standing ?
*September 28, 2011*

**math**

i guess it's 8000
*September 27, 2011*

**math**

What is the interest amount on $1,800 for a year at 1/2%
*September 27, 2011*

**math**

how to divide 7 over 35?
*September 26, 2011*

**Physics**

Units count. Show all steps, not just the numerical substitutions. Show the equations you used. No information is missing. A person throws a ball upward into the air with an initial velocity of 15.0 m/s. Calculate the following: a.) how high it goes. b.) how long the ball is ...
*September 26, 2011*

**Physics**

A person throws a ball upward into the air with an initial velocity of 15.0 m/s. Calculate the following: a.) how high it goes. b.) how long the ball is in the air before it comes back to his hand. c.) at what time(s) will the ball pass a point 8.00 m. If you got multiples ...
*September 26, 2011*

**intermediate 111**

Wilson Corporation began operations in January 2008, and purchased a machine for $20,000. Wilson uses straight-line depreciation over a four-year period for financial reporting purposes. For tax purposes, the deduction is 50% of cost in 2008, 30% in 2009, and 20% in 2010. ...
*September 21, 2011*

**algebra**

raise the quantity in parenthesis to the indicated exponent and simplify. (-16x^-2y^3)^2 __________ 80x^-2y^3
*September 21, 2011*

**Physics**

The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 5.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could take the vehicle to ...
*September 19, 2011*

**physics**

a driver of a car traveling at 15.6 m/s applies the brakes causing a uniform deceleration of 2.1 m/s squared. how long does it take the car to accelerate to a final speeed of 10.9 m/s. answer in units of seconds
*September 18, 2011*

**physics **

a car enters the freeway with a speed of 5.6 m/s and accelerates uniformly for 2.7 km in 3.0 minutes.How fast is the car moving after this time? answer in units of m/s
*September 18, 2011*

**physics**

turner's treadmill starts with a velocity of -3.4 m/s and speeds up at regular intervals during a half hour workout. after 26 minutes the treadmill has a velocity of -7.6 m/s. what is the average acceleration of the treadmill during this period? answer in units of m/s ...
*September 18, 2011*

**physics**

a car accelerates uniformly from rest to a speed of 21.8 km/h in 5.9 seconds.find the distance it travels during this time. answer in units of meters
*September 18, 2011*

**AP Calculus AB**

If y = (((3x^2)+ 5)^5)((x+2)^4), then dy/dx = ? I've gotten to the point where i have (5((3x^2)+ 5)^4)(4(x+2)^3)(6x), what do i do next? It's a multiple choice question anf this is not one of the answers listed. Any help would be appreciated. Thanks!
*September 18, 2011*

**PALO VERDE **

SIMPLIFY [4 -1] + [-1 2] OVER [2 5] + [-2 -3]
*September 14, 2011*

**childcare**

The main difference between emergency care and first aid is the
*September 13, 2011*

**math**

polynomials (m + 7)(m - 3) + (m-4)(m+5)
*September 13, 2011*

**statistics**

A salesperson finds that, in the long run, two out of five sales calls are successful. Twelve calls are to be made. Let X = the number of concluded sales. Is X a binomial random variable? Explain!
*September 12, 2011*

**math**

arrange the following from least to greatest 3/8,2/4,6/9,9/12
*September 9, 2011*

**Mathematics optimization**

The arithmetic mean of two numbers a and b is the number(a+b)/2. Find the value of c in the conclusion of the mean-value theorem for f(x)=x^2 on any interval [a,b].
*September 3, 2011*

**physics**

nevermind!! i figured it out!
*September 1, 2011*

**physics**

Four vectors, each of magnitude 89 m, lie along the sides of a parallelogram. The angle between vector A and B is 77◦. A 89 m C 89 m B 89 m D 89 m What is the magnitude of the vector sum of the four vectors? Answer in units of m I got 346.8757431m, but that's not ...
*September 1, 2011*

**algebra**

6y+13=
*August 30, 2011*

**physics**

A body at rest is given an initial uniform acceleration of 8m/s2 for 30s after which the acceleration is reduced to 5m/s2 for the next twenty seconds. The body maintains the speed attained for 60s, after which it is brought to rest in 20s. 1. Draw the velocity time graph of ...
*August 28, 2011*

**com/170**

review the evaluatio paragraph on p.179 of the text. Identify what the author did well and what the author could hae done better.
*August 16, 2011*

**com/170**

review the evaluatio paragraph on p.179 of the text. Identify what the author did well and what the author could hae done better.
*August 16, 2011*

**Calculus**

A pipe in the shape of a right-angle elbow contains a vertical section and a horizontal section with a valve at the right angle. Presently the valve is closed and the vertical section of the pipe contains a column of water having length L. When the valve is opened, the amount ...
*August 7, 2011*

**Physics**

A ray of light falls on one of two plane mirrors placed at an angle of 90 degrees. show that the direction of the ray after two reflections is parallel to the direction of the original ray.
*July 22, 2011*

**Physics**

A lady looks at herself in a concave makeup mirror whose radius is 80cm.One of her eyes is on the axis of the mirror,16cm in front of the vertex.(a)Find the position and magnification of the image of the eye.(b) Is the image real or virtual?erect or inverted?
*July 22, 2011*

**Calculus**

Thank you and sorry I typed it wrong "a" is y
*July 21, 2011*

**Calculus**

3 numbers x y and z are to bea randomly chosen between 0 and 1. A What is the probability that X + y + z will be less than 1? B What is the probability that both x+ y<1 and 1<x+a Try your best and... Thanks alot!
*July 21, 2011*

**Intro to calc**

Sorry the last one had too many typos... Three numbers x y and z are to be randomly chosen between 0 and 1. A) What is the probability that X + y + z will be less than 1? B) What is the probability that both x+ y + z <1 and 1< x+y Try your best and... Thanks alot!
*July 20, 2011*

**Intro to calc**

3 numbers x y and z are to bea randomly chosen between 0 and 1. A What is the probability that X + y + z will be less than 1? B What is the probability that both x+ y<1 and 1<x+a Try your best and... Thanks alot!
*July 20, 2011*

**com 156**

need help with writing a thesis statement on renting an apartment is better than buying a house.
*July 19, 2011*

**physical science**

Pursley*
*June 30, 2011*

**physical science**

P!nk. Don't be mean. Bob parsley was just trying to help. He's right. The reason being is because when the force is in the same path as direction work is done. Although, if friction is involved the energy converts to heat and energy is lost. Therefore, work is not ...
*June 30, 2011*

**College Physics**

6. A tall bald student (height 2.1 meters and mass 93.1 kg) decides to try bungee jumping from a bridge. The bridge is 36.7 meters above the river and the "bungee" is 25.3 meters long as measured from the attachment of the bridge to the foot of the jumper. Treat the...
*June 29, 2011*

**College Physics**

1. A spring gun is made by compressing a spring ina tube and then altching the spring at the compressed position. A 4.97-g pellet is placed against the compressed and latched spring. The spring latches at a compression of 4.06 cm, and it takes a force of 9.12 N to compress the...
*June 29, 2011*

**alg II**

How do you solve this equation? 2cos(pi*x) = 4x = 5
*June 15, 2011*

**geometry**

Point P has coordinates of (-11,2) and the circle C has the equation of (x-1)squared + (y-2)squared = 36. How do I caculate Point A?
*June 3, 2011*

**Math**

you go to sunland dont you?
*May 31, 2011*

**Chemistry**

Is this is food calories?
*May 25, 2011*

**Chemistry**

Thank you so much!!! You're really a lifesaver!
*May 25, 2011*

**Chemistry**

Oh nevermind you put it there. THANK YOU SO MUCH! You're a huge help!!!
*May 25, 2011*

**Chemistry**

What's the constant for water though? Every time I look it up it's a different number
*May 25, 2011*

**Chemistry**

Calculate how much heat 32.0 g of water absorbs when it is heated from 26.0°C to 73.5°C. In joules, and then we have to calculate calories too, how is that done? I was absent. Thanks so much!
*May 25, 2011*

**Chemistry**

A 22.0 g piece of aluminum at 0.0°C is dropped into a beaker of water. The temperature of the water drops from 92.0°C to 77.0°C. What quantity of heat energy did the piece of aluminum absorb? Please Help, I'm so lost :( Thank you
*May 25, 2011*

**Chemistry**

THANK YOU!!!!!!
*May 25, 2011*

**Spanish**

Podemos alquilar dos peliculas I need to answer this using direct object pronouns.
*May 22, 2011*

**Math**

Hi, my name is Jane:). Math is my worst subject ever, so it surprised me how I'm in the advanced class! The teacher doesn't exactly explain things well and I'm not easily understanding the lessons. He told me if I don't turn in this packet we'll have ...
*May 18, 2011*

**sociology**

Hi This is my essay question Please can you read my essay below and critque it. "Durkheim argues that society is held together by sets of norms which are transmitted to us by social institutions like the family and schools, and that this process fundamentally shapes our ...
*May 17, 2011*

**Sociology**

Hi can someone help me I am battling to understand Durkheims concepts, I need to define his concepts and then intergrate it with one of my life experiences in education, religion and family.
*May 16, 2011*

**math**

how do you know that (x-2x)/(x+1) is a hyperbola? Thank you!
*May 13, 2011*

**Sociology**

Hi This is my essay question and I dont know how to start this essay I am not sure what is required of me, Please help. "Durkheim argues that society is held together by sets of norms which are transmitted to us by social institutions like the family and schools, and that...
*May 12, 2011*

**Geometry**

2 equal circles in rectangle. if area of rectangle is 50 cm squared, wht is the radius in cm of each circle?
*May 9, 2011*

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