Friday
March 6, 2015

Posts by Ali


Total # Posts: 567

Math
In a fish tank, there are two fewer blue fish than three times the number of yellow fish. If there are 10 blue fish, what is the number of yellow fish(n). Write an equation to solve for n.
April 18, 2011

pre cal
assume the angle is in the first quadrant, and sin theta equals 1/5. what is sin 2 theta?
April 17, 2011

math
simplify and state the restrictions of a^2- 9b^2 / 5a^2-11ab-12b^2
March 27, 2011

science
Calculate the molarity of each solution. a) 1.0 mol KCl in 750 mL of solution b) 0.50 mol MgCl2 in 1.5 L of solution
March 24, 2011

computer science
please write this in C. Thanks
March 4, 2011

computer science
n insurance company wants to offer a new 5-year, level-term life insurance policy to recent college graduates. The policy will have a face value (the amount paid in case of death) of $50,000. Normally, the company charges different premiums depending on the age, gender, ...
March 4, 2011

physics
Batman, whose mass is 119 kg, is holding on to the free end of a 14.6 m rope, the other end of which is fixed to a tree limb above. He is able to get the rope in motion as only Batman knows how, eventually getting it to swing enough that he can reach a ledge when the rope ...
February 25, 2011

MATH
how many one-inch square tiles will he need to cover a surface that is 2ft by 3ft
February 24, 2011

algebra
Josh hit a baseball straight up into the air. The equation below describes the height of the ball (h), in meters, as a function of time (t) in seconds. h(t) = -9.8t² + 30t + 1.5
February 16, 2011

physcis
In the diagram shown the pulley at frictionless and the cylindrical load weighs 800. A. Determine the tension in the cable. B. Determine the horizontal component of the reaction of the pin A. C. Determine the vertical component of the reaction of the pin A.
February 3, 2011

Algebra 2
A Rectangular Field is to be enclosed by a fence and divided into three parts by another fencer. Find the maximum area that can be enclosed and separated i this way with 500 meters of fencing
February 3, 2011

American History
How did the pattern of European immigration shift in 1890?
January 30, 2011

physics
a hockey puck rebounds from a board. the puck is in contact with the board for 2.5 ms. dertermine the acceleration of the puck over the time interval. V(i) = 26 m/s...at angle of 22 degrees. V(f) = 21 m/s...at angle of 22 degrees. a=?
January 27, 2011

physics
Two point sources, 5.0 cm apart are operating in phase, with a common frequency of 6.0 Hz, in a ripple tank. A metre stick is placed above the water, parallel to the line joining the sources. The first nodal lines (the ones adjacent to the central axis) cross the metre stick ...
January 16, 2011

geometry
if the length of RS is 12 and the length of ST is 13 , which of the following could be the length of RT ? A> 24 , B> 26 , C> 28 , D> 29 E> 30
January 15, 2011

Law and ethics in allied health
ive been trying to figure this question out for 20 minutes.. if you could help me that would be great. - Dennis, a new medical assistant at Dr. Hernandez's office, notices that Beth has been waiting over an hour to get an allergy shot. Dennis has never given a shot before...
January 13, 2011

physics
Two point charges, +3.63 µC and -5.95 µC, are separated by 1.18 m. What is the electric potential midway between them?
January 12, 2011

Physics
A particle has a charge of +1.5 µC and moves from point A to point B, a distance of 0.18 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at...
January 12, 2011

Physics 11th Grade
the total kg would be 85 kg. then multiply by 9.8 to find fg. to lose weight he has to have a downward acceleration ( push downwards on a countertop while standing on the scale).
January 9, 2011

Math/Trig
Write an equation for a cosine function with an amplitude of 2/3 , a period of pi, and a vertical shift of 2 units up.
January 4, 2011

physics
thank you. this was very helpful.
January 1, 2011

physics
thank you for responding: i did: (9.0*10^9)cos30((4.0*10^-6)^2)/(0.2^2) using this i got 3.1. so then i need to double it because it's two spheres. right? and sorry about the formula in the question. i confused my self with the "times" and "exponent".
January 1, 2011

physics
Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. i used this: (K)Cos30((4.0*10-6)*2)/(0.2*2) and i get 3.1 ...
January 1, 2011

physics
Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. i used this: (K)Cos30((4.0*10-6)*2)/(0.2*2) and i get 3.1 ...
January 1, 2011

physics
Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. i used this: (K)Cos30((4.0*10-6)*2)/(0.2*2) and i get 3.1 ...
January 1, 2011

Science 6th grade
What is the best way to tell a chemical change has taken place? 1. The matter changes color 2. The mixture separates into layers 3. The composition chnages
December 30, 2010

finance
Harvard Group Case Analysis Foreign Exchange Hedging Strategies at General Motors: Transactional and Translational Exposures
December 19, 2010

11th grade math
Using the formula 4.9t^2... A object is dropped how long will it take it to fall 92 meters
December 16, 2010

chemistry
my moth balls froze at 54 degrees celsius, what kind are they?
December 15, 2010

business comunication
write an application in response to an advertisement in the daily dawn for the post of manager hrm in sony electric lahore
December 6, 2010

HISTORY
what is the official currency of the united states?
December 2, 2010

algebra
set up an equation, slope-intercept might help!
December 2, 2010

physics
db = 10log(p2/p1) = 5. 10log(p2/p1) = 5, Divide both sides by 10: log(p2/p1) = 0.5, p2/p1 = 10^0.5 = 3.16.
December 1, 2010

statistics
an experiment consists of 4 tosses of a coin.denoting the outcomes HHTH,THTT,..and assuming that all 16 outcomes are equally likely, find the probability distribution for the total number of heads.
November 21, 2010

vocab
intermenttently what does this word mean
November 19, 2010

language arts
thanks
November 19, 2010

language arts
What is the sense of the word "starts" in the sentence below? By doing this she starts something she did not know was going to happen. Is the answer intermenttently?
November 19, 2010

math
The longest steel arch bridge is the new river gorge near fayetteville,west virginia. write an inequality that describes the length in feet ,1, of every other steel arch bridge. the new river gorge bridge is 1700 feet long.
November 16, 2010

Statistics
Assume a population of any 4 numbers(suppose: 4,8,15,19). Select a random sample of size 2 with replacement from the population. List all the possible samples and their corresponding values of x̄ “x-bar” and then find the probability distribution of “X-bar...
November 16, 2010

chemistry
A sample of carboxylic acid is added to 50.0 mL of 2.27 M NaOH and the excess NaOH required 28.7 mL of 1.86 M HCl for neutralization. How many moles of NaOH reacted with the carboxylic acid?
November 11, 2010

12 Math
Graph the results of a coin toss: Toss Coins 0 20 1 12 2 5 3 1 4 0 State an equation that best fits the results (use n to represent the number of the toss). What physical phenomenon does this model? I was able to graph this, I just do not understand how to write the equation, ...
November 10, 2010

language arts
ill try
November 8, 2010

language arts
i just remembered it was main idea, purpose, and intent
November 8, 2010

language arts
thank you
November 8, 2010

language arts
what are three major parts of a summary?
November 8, 2010

Math
collect like terms and substitute 0for y? i think im just now doing this in my senior year in middle school algebra1
November 8, 2010

pre algebra
try to set up an equation im in algebra 2 so i may be able to help you
November 8, 2010

geometry
are the sides decimal?
November 8, 2010

pscyhology
technolly no one can tell you becuase its a test but lets just say its not a test they all look right
November 8, 2010

math
Hint: set up an equatoin
November 8, 2010

Graph help!
Sketch y= -(1/4) (2)^(x-4)+5 I know that the basic equation is y=2^x so is the graph translated 4 units right, vertically stretched by a factor of (1/4), reflected on the x-axis and translated up 5?
November 8, 2010

check math question
Thank you!
November 8, 2010

check math question
Given y=2^x Predict the equation for the graph that has been reflected in the y-axis, given a vertical stretch by a factor of 5, translated 2 units right and 5 units down. I have: y= -5 (2) ^ (x-2) - 5 Is this correct?
November 8, 2010

Graphing
Sketch y= -(1/4)(2)^(x-4)+5 by first including a table describing its major features.
November 8, 2010

Math Graph
Sketch y= -(1/4)(2)^(x-4)+5 by first including a table describing its major features.
November 8, 2010

math
In a Geometric progression the sum of its first 4 term is equal 15, and the sum of the next term is equal to 15/16. find its first term and its common ratio
November 5, 2010

math
in an arithmetic progression the 50th term is equal to 3, and the sum of the first 8th is equal to 23. find the first term and the common difference
November 5, 2010

math
a rubber ball fell from a high of 16 feet and then its rebounded until it rested, such that each time it rebounded to a high =1/2 the high rebounded to previouslly a) find the high rebounded to after the 10th term b)find the distance cover by the ball before it rested
November 5, 2010

math
If the sum of the first and the second terms of an infinite Geometric progression is equal to 3/8, and the sum of its term is equal to 1/2. find the common ratio of the first term of the progression
November 5, 2010

math
in a Geometric progression the sum of the first and the second terms is 90 and the sum of the second and the fourth terms is equal to 30.find the sum of the first 8th term in the progression
November 5, 2010

math
find the sum of the first 8th term of the Geometric progression, 1,3,9,27
November 5, 2010

math
find the sum of the 20th term a=6 and r=2/3
November 3, 2010

Math
27
November 2, 2010

Math
My ones digit is 5 more than the tens digit. i am greater than 25 and less than 35.
November 2, 2010

Calculus - integration
integration1-e integration 0-lnx y dy dx
November 1, 2010

graphing
How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
November 1, 2010

Chemistry
and the Ksp as well im so lost! :(
November 1, 2010

Chemistry
what is the solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS from highest to lowest
November 1, 2010

log equation graph
How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
November 1, 2010

Simplify exponents
(x^ a+b) ^ (a-b) / (x^a-2b) ^ (a+2b)
November 1, 2010

log graph
How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
November 1, 2010

equation of exp function
What equation has the following features: It has the x-axis as an asymptote and it passes through (0, -1), (-1,-3) and (-2,-9)?
November 1, 2010

Simplify exponents
Sorry! (x^ a+b) ^ (a-b) / (x^a-2b) ^ (a+2b)
November 1, 2010

Simplify exponents
How do you simplify this equation: (x^a+b)^a-b / (x^a-2b) ^ a+2b
November 1, 2010

neg exponents
How do you write: -1/9 x^-1 with a positive exponent? also, -5 x^-2 ??
November 1, 2010

inverse equation
The same equation, just simply switched: if you have x+y= b, the inverse is y+x=b, which is the same thing and therefore its own inverse? Thank you!
November 1, 2010

inverse equation
How is any equation of the form y= -x + b its own inverse?
November 1, 2010

logs 3
How do you create a table to graph log (3/2) x ???
November 1, 2010

Richter scale question
I'm sorry, I'm still confused. Is it something like log(2) 6.1??
November 1, 2010

Richter scale question
I was not given any information regarding these factors, I wrote out the question I was given
November 1, 2010

Richter scale question
An earthquake registers 6.1 on the richter scale. What is the rating on an earthquake twice as powerful? I know: M=I/Io Then what do you do?
November 1, 2010

logs 2
How do you solve log(5) 20 + log (5) 10 - 3log(5) 2?
November 1, 2010

logs
How do you solve: log (1/3) 1 ?
November 1, 2010

Advanced Functions 2
I'm sorry for not using grouping symbols! You are correct, the exponents are (a-b) and (a-2b)
November 1, 2010

Advanced Functions 2
How do you simplify (x^a+b)^a-b / (x^a-2b) ^ a+2b
November 1, 2010

Advanced Functions
How do you write -1/9 x^-1 with a positive exponent? also, -5 x^-2 ??
November 1, 2010

physics
A cart starts from position one with a velocity of 17.0 m/s. Find the speed of the cart at positions 2 and 3 ignoring friction. will the cart reach position four? position 2= 12.0 m high position 3= 2.0 m high 4= 20.m high
October 26, 2010

College Physics
A 75.0 kg ladder that is 3.00 m in length is placed against a wall at an angle theta. The center of gravity of the ladder is at a point 1.20 m from the base of the ladder. The coefficient of static friction at the base of the ladder is 0.800. There is no friction between the ...
October 25, 2010

cuyamaca
Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of $8.00 per unit. During the year, purchases were: Feb. 20 600 units at $9 Aug. 12 300 units at $11 May 5 500 units at $10 Dec. 8 200 units at $12 Eddings Company uses a periodic inventory system...
October 19, 2010

math
another way is to prime factorize each number and take the highest power of each prime and multiply them together. For 8= 2^3 or 2x2x2 for 12=2^2x3 or 2x2x2 for 15=3x5 by taking the highest power of each prime and multiplying together we get our solution: 2^3x3x5 or 2x2x2x3x5 ...
October 14, 2010

math
how do you find the answer for 5/16 +3/35=
October 10, 2010

science
A 4.0 kg box is raised from rest a distance of 6.0 m by a vertical force of 110 N. (a) Find the work done by the force. (b) Find the work done by gravity. (c) Find the final kinetic energy of the box.
October 10, 2010

science
A 4.0 kg box is raised from rest a distance of 6.0 m by a vertical force of 110 N.
October 10, 2010

Statistics
B IS SMALLEST C IS GREATER VARIATION
September 26, 2010

Physics
A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf
September 20, 2010

Physics
A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf
September 20, 2010

math
312
September 16, 2010

Physics
A boat that can travel at 4.0 km/hr in still water crosses a river with a current of 1.8 km/h. at what angle must the boat be pointed upstream to travel straight across the river? Confused on how to even set it up!
September 12, 2010

11th grade
The base of a pyramid is 10 cm high is the triangle shown. Find the volume of the pyramid. The hieght/leg of the traingle is 4 the base/leg is 6 and the hypothnues is 7.21
September 5, 2010

Algebra
10-foot ladder leans against an 8-foot wall. How far from the wall should the foot of the ladder be placed so that the top of the ladder will be exactly at the top of the wall?
August 4, 2010

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