Tuesday
September 2, 2014

Posts by anon


Total # Posts: 1,340

PHYSICS
A 62 kg water skier, moving at 14 m/s , lets go of the towline. Momentum= 868 kgm/s Impulse= -868 Ns c.If the water exerts an average force of -275 N on the skier, how long must the force act? 3.16 s d. How far does she travel during this time? I'm guessing "this time...
January 6, 2012

precalulus
Ok feeling kinda dumb because this isn't coming out right. I know it's simple. log6 (x -3) + log6(x -6) - log6(x + 1) = 2
December 21, 2011

algebra
given f(x) and g(x) find a. f + g b. f -g c. f*g d. f/g f(x) = sqrt x g(x) = 6x - 5
December 21, 2011

pre calculus
given the following rational function a. state the domain b. find the vertical and horizontal asymptotes if any c. find the oblique asymptote f(x) = x^2 + 7x + 5 / x + 8
December 21, 2011

pre calculus
verify functions f and g are inverses of each other by showing that f(g(x)) = x and g(f(x)) = x. f(x)= 5/(2 -x) g (x) = 2 - 5/x
December 21, 2011

algebra
Thank you!
December 20, 2011

algebra
solve the inequality express in interval notation x^4 + 4x^3 - 9x^2 - 36x < 0
December 20, 2011

pre calculus
Thank u!
December 20, 2011

pre calculus
Solve the exponential equation Express you solutions in exact form only Please show your work e^2x - 9e^x - 20 = 2
December 20, 2011

algebra
solve the exponential equation Express in exact form. 5e^xlog_9 = 11 Is x = (ln11-ln5/log_9 exact form??????
December 18, 2011

algebra
solve the logarithm log_2 (x -1)- log_2(5x +1) = -3 I got -3, is this correct???????
December 18, 2011

algebra
You make it look so easy and I have been pounding my head on the wall. Thank you!
December 17, 2011

algebra
Solve the equation below. Please show all of your work log_7(x + 3/7) = -2
December 17, 2011

precalulus
Change the exponentional expression to an equivalent expression involving a logarithm. 7^c = 0.026
December 17, 2011

pre calculus
It's ok figured that out on my own :)
December 17, 2011

pre calculus
graph the function below. Determine the domain, range and horizontal asymptote. f(x) = -(3/4)^x - 1
December 17, 2011

critical thinking ( is it correct)
It’s a deductive argument. Because all its premises are true (Many universities have begun using I<Clicker 2 to capture student response information in the classroom, and 94% of users agree that the product is effective or extremely effective) then its conclusion must ...
December 16, 2011

pre calculus
Can someone please help me with this???????
December 15, 2011

pre calculus
I have worked this over and over still think it's wrong. find its inverse, domain, and range of f and f^-1 f(x) = 5/ (3x -7)
December 15, 2011

algebra
Someone please help me with this!!!!
December 13, 2011

algebra
The period t ( in seconds) of a simple pendulum as a function of its length l(in feet) is given by t(l) = xpie sqrt 1/32.2 a. Express the length l as a function of the period t b. How long is a pendulum whose period is 3 seconds. Is the answer 2 sec for a and 2.25 feet for b?????
December 13, 2011

math
short leg = 4; to find long leg multiply 4 x 2; long leg = 8; to find how high; use x^2 + 4^2 = 8^2 so: x^2 + 16 = 64; subtract 16 from both sides: x^2 = 48; find the square root of 48; x = 6.93 so the top of the ladder is 6.93 m above the ground.
December 13, 2011

pharcare
thanks:)
December 13, 2011

pharcare
human development and its dominant characteristics,please give me the link I can't find it.thanks:)
December 13, 2011

Chemistry
Selenium from 0.108 g of Brazil nuts was converted into a fluorescent product, which was extracted into 10.0 mL of cyclohexane. Then 2.00 mL of the cyclohexane solution were placed in a cuvet for fluorescence measurements. A.) Standard additions of fluorescent product ...
December 12, 2011

physics
a.) P = (mgd)/t so just plug in and solve b.) mgy(spring) + 1/2ky(spring) = mgy(crate) y(spring) = mgy(crate) / (mg+1/2k) and now you can plug in again and solve
December 11, 2011

algebra
Me too but it gets counted wrong in this format.
December 10, 2011

algebra
Solve the following inequality and write your answer using interval notation . Please show all your work 10^3 + 6x^2 - 90x - 54 < 0
December 10, 2011

pre calculus
Thank you!
December 10, 2011

pre calculus
Use the remainder theorem to find the remainder when f(x) is divided by x -2. Then use the factor theorem to determine whether x -2 is a factor of f(x) f(x) = 2x^5 + 6x^4 - x^2 - 7x - 12
December 10, 2011

algebra
Thank you!
December 9, 2011

algebra
solve the following in the real number system x^3 + 8x^2 + 10x - 15 = 0 Please help me!
December 9, 2011

pre cal
ok I am at a total loss here. I have a graph with the points (0,-3) (0,-5) (3,-2) (5,-7) with vertical asymptote of (6,1) I have to find the rational function. where do I start?
December 8, 2011

college alegebra
Thank you that helps a lot!
December 8, 2011

college alegebra
solve the following equation in the real number system 3x^3 - 20x^2 + 29x +12 = 0 Ok I thought I knew how to do this but I guess I don't. Help me! Please!
December 8, 2011

macroeconomics
The relationship between inflation and aggregate demand is negative. the relationship between inflation and real interest rate is a positive. ( not sure if its right) the relationship between aggregate demand and real interest rate is negative.
December 5, 2011

macroeconomics
how does someone go about deriving the aggregate demand function? what should i explain first
December 5, 2011

critical thinking
if we reason from the fact that all A's observed so far are B's to the conclusion that all A's whatsoever are B's, Which kind of induction would we be utilizing? I'm not sure but i think it's disjunctive syllogism.
December 4, 2011

critical thinking
i was wrong its actually induction by enumeration.
December 4, 2011

critical thinking
I hate when they play around with words it's so confusing.
December 4, 2011

critical thinking
if we reason from the fact that all A's observed so far are B's to the conclusion that all A's whatsoever are B's, Which kind of induction would we be utilizing? I'm not sure but i think it's disjunctive syllogism.
December 4, 2011

Algebra 1
A bakery makes bread in batches. Several loaves per batch are rejected due to defects. Your friend says that the total number of defective loaves is the independent variable. Explain and correct the error.
December 4, 2011

pre cal
Is the given function linear or nonlinear. If linear determine the slope. x y = f(x) 1 -2 -2 -14 3 8 4 4 -6 1
December 1, 2011

algebra
Ok, think I finally got this. Got to a certain point and was wondering what now? Thank you so much!
December 1, 2011

algebra
the correct equation is F(x) = (x + 1/4)^4 (x^2 + 1)^5
December 1, 2011

algebra
I do it's 1/4 instead. sorry
December 1, 2011

algebra
For the polynomial below list each real zero and its multiplicity. f(x) = (x + 1/1)^4 (x^2 + x)^5 Really need some help with this! Have worked it twice and got two different answers!
December 1, 2011

algebra
sorry about that, it was the second one. Thank you, I figured it out and also got -1/11 so feel better knowing it is right.
December 1, 2011

algebra
given the following quadratic equation, determine if it has a maximum or a minimum value. Then find the maximum or minimum value f(x) - -11x^2 - 2x - 7
December 1, 2011

College Physics
Dry Ice. At standard atmospheric pressure, the solid form of carbon dioxide called “dry ice” undergoes a phase change not to a liquid but straight to a gas. This process is called sublimation, and like other phase transitions heat energy is required. In this case it ...
November 30, 2011

PHYSICS
a) How much energy is required to evaporate all the water in a swimming pool of area 158 m2 and depth 4.1 m (b) The intensity of sunlight is about 1080 W/m2. If all of this energy is absorbed by the water in the pool, how long will it take for take the water to evaporate?
November 30, 2011

computer
thanks for the help :)
November 25, 2011

computer
it is a timeline,what i mean is example.thanks :)
November 25, 2011

computer
recently developed computer technology and give its description,inventor,year invented and the purpose why it was developed.
November 25, 2011

math
what am i supposed to do?
November 16, 2011

Chemistry
my discussion is tomorrow thanks guys ;)
November 16, 2011

Math
this is math. not in reality. you have to use a proportion and that's what i need help with.
November 15, 2011

Math
Your heart bears 240 times in 4 minutes. What is your heart rate in beats per second? Explain
November 15, 2011

Physics
Two nearby nodes of a standing wave are separated by 4.5 m. If the frequency of the wave is 184 Hz, what is the speed of the wave?
November 14, 2011

spirituality and supernatural
We can see that spirituality and the supernatural plays a large role in any culture and society, it's influence can be seen in the Buddhist sects of Japan. How this influence is seen within the Japanese culture through modern media and films. How do films and media display...
November 11, 2011

Opinion on Myths
What do you make of the similarities between Japanese and Greek myths (for lack of a better word)?
November 11, 2011

opinion
Do you think that fantasy movies about social issues help to bring the right kind of attention to the matter, or do they detract and/or lessen it's actual severity?
November 11, 2011

math HELP FAST PLEASE
i dont know it thats why i'm asking u.
November 9, 2011

math HELP FAST PLEASE
bella baked 6 dozen cookies. she wants to keep 1 dozen and give the rest to 20 friends. she wants to give an equal number of cookies to each friend. how many cookies does each friend get? justify your answer.
November 9, 2011

Math HELP FAST PLEASE
chris has some rice cakes and 1 granola bar as a snack. the snack contained a total of 560 calories. if the granola bar had 120 calories and each rice had 40 calories, how many rice cakes did chris have? explain
November 9, 2011

Math HELP FAST PLEASE
liz earns a weekly salary of $459 and $20 per hour for each overtime hour she works. this week her total pay including salary and overtime pay was $559. write an equation to represent this situation. how many hours of overtime did liz work?
November 9, 2011

math HELP FAST PLEASE
sal's movie rental club membership costs $11 per month. with a membership, each movie costs $2. sal's monthly movie rental charge was $23. how many movies did sal rent?
November 9, 2011

Math
three friends each own land in the same town. Miguel owns 71/2 acres. Jorge & Juanita own the same number of acres. if the friends own 20 1/3 acres altogether, how many acres do Jorge and Juanita owns?
November 9, 2011

Math
Vicky uses 1 2/3 cup milk for a muffin recipe. If she wants to make 3 times the amount of muffins, how much milk will she use?
November 9, 2011

Math
Leroy ran a total of 15 miles last month. He ran 5/8 mile each day. How many days did he run?
November 9, 2011

College Physics
A steel piano string for the note middle C is about 0.68 m long and is under a tension of 400 N. If the fundamental frequency is 226 Hz, what is the string’s diameter?
November 6, 2011

College Physics
A child plays on a bungee cord and oscillates with a certain frequency f. An adult with a mass that is 16 times greater than that of the child then uses the same bungee cord. What is the ratio of the frequency with the adult to the frequency with the child? I tried to answer ...
November 6, 2011

statistics
Help me! Population of heights of college students is approximately normally distributed with a mean of 64.37 inches and standard deviation of 6.26 inches A random sample of 74 heights is obtained. Find the mean and standard error of the x bar distribution 2. Find P(xbar > ...
November 6, 2011

statistics
If a population has a standard deviation of 5 units what is the standard error of the mean if samples of size 25 units are selected????
November 4, 2011

Anime
How would you differentiate anime from American animated series/films? Is it in the story-line, art, etc.? Do they influence one another? Also, how has anime evolved over time, and what exactly is its purpose?
November 2, 2011

s.s
i mean i understand where you are coming from all im sying is there is no need to be rude about it :)
November 2, 2011

s.s
Ms. sue i just have one question for you why do you have to jump into every post and be such a snarky stick int he mud i mean people need help alot of the books suck and public school teachers dont care anymore i mean people come and ask for help and you just spit in their ...
November 2, 2011

critical thinking.
which of the following is the best example of "negative evidence" for the claim," samsung makes excellent quality phones"? A. 50.6 of htc evo users prefer evo to samsung's android. B. the main competitors of samsung are htc,nokia and black barry. C. 4 ...
October 31, 2011

critical thinking. Please help.
I was wrong. For question 2 I'm think it's C. (hope I'm right) and for the truth and false question .I think its true. but i'm not sure!
October 31, 2011

critical thinking. Please help.
Truth or False : for business writing,it is always best to present the most analytical, matter of fact writing in order to be convincing. most claims in business,and in persuasive writing generally tend to be contestable claims.this requires the author of the argument to do ...
October 31, 2011

Chemistry
A person suffering from hyponatremia has a sodium ion concentration in the blood of 0.118 Mand a total blood volume of 4.6 L.What mass of sodium chloride would need to be added to the blood to bring the sodium ion concentration up to 0.138 M, assuming no change in blood volume?
October 31, 2011

Chemistry
(a) Calculate the molarity of a solution that contains 0.175 mol ZnCl2 in exactly 150 mL of solution. (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid? (c) How many milliliters of 6.00 MNaOH solution are needed to provide 0.325 mol of NaOH?
October 31, 2011

Chemistry
An aqueous solution of an unknown solute is tested with litmus paper and found to be acidic. The solution is weakly conducting compared with a solution of NaCl of the same concentration. Which of the following substances could the unknown be: KOH,NH3,HNO3, KClO2, H3PO3, ...
October 31, 2011

Opinion
Generally speaking, what can we learn from a society's villains faced by its heroes that we can't learn from its heroes? Is it easier for you (personally) to understand what a villain represents than a hero? On a similar note, do you think it's easier to say what ...
October 28, 2011

science
In what direction do you turn the coarse focus adjustment know to move the object away from your slide? In what direction do you turn the fine adjusment?
October 27, 2011

physics
A person can jump a maximum horizontal distance (by using a 45 projectile angle) of 5 m on Earth. What would be the maximum range on Mars, where the acceleration due to gravity is 0.38 g?
October 25, 2011

physics help please
A long jumper leaves the ground at an angle of 25.2 to the horizontal and at a speed of 11.2 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in units of m What maximum height does he reach?
October 24, 2011

Physics Honors
@ K, You should check your work before posting an answer. The correct answer should be a) 3.5s b) 21m
October 23, 2011

Physics
The region of the solar system between Mars and Jupiter contains many asteroids that orbit the Sun. Consider an asteroid in a circular orbit of radius 4.0 1011 m. Find the period of the orbit IN SECONDS!!!???
October 22, 2011

Fighting Style
Which fighting style is mainly used in modern day films and why? With Bruce Lee creating his own style of martial arts, what research did Bruce Lee had to do for his his style Jeet Kun Do to be successful and does it still exist in modern times? Does the Jeet Kun Do style used...
October 19, 2011

College Physics
In Chapter 3 we learned that the force of air drag on an object moving rapidly through the air is proportional to v2, where v is the speed of the ball relative to the air. The same relation applies to the force of the wind on the blades of a wind turbine (Figure 9.4), where v ...
October 18, 2011

College Physics
A rod of mass 4.3 kg and length 4.3 m hangs from a hinge as shown in Figure P9.28. The end of the rod is then given a “kick” so that it is moving at a speed of 2.3 m/s. How high will the rod swing? Express your answer in terms of the angle (in degree) that the rod ...
October 18, 2011

Physics
I tried that and did not get the right answer. I think I need to use KE_i + PE_i = KE_f + PE_f ... which would be: .5mv_i^2 + 1/2Iw_i^2 + mgh_i = 1/2mv_f^2 + .5Iw_f^2 +mgh_f --> I= 2/5mr^2 for a solid sphere I factored out the mass on both sides but my problem is that I ...
October 18, 2011

Physics
A bowling ball is rolled up an incline. If the ball has a speed of 12 m/s at the base of the incline, to what height h on the incline will the center mass travel?
October 18, 2011

Chemistry
Determine the pH of a 0.10 M MgCl2 solution.
October 16, 2011

Physics
You like to swim at a nearby lake. On one side of the lake is a cliff, and the top of the cliff is 69 m above the surface of the lake. You dive of the cliff doing somersaults so as to have an angular speed of 5.5 rev/s. How many revolutions do you make before you hit the water...
October 11, 2011

Chemistry
How many milliliters of a 0.66 M HCl solution are needed to react completely with 1.9 g of zinc to form zinc(II) chloride?
October 4, 2011

pre calculus
I can't believe it's that simple, I have been going crazy! Thank you!
October 2, 2011

pre calculus
Change the exponentioanl expression to an equivalent expression involving a logarithm. e^-1/3 = 9t Somebody help PLease!
October 2, 2011

physics
A car travels along a straight stretch of road. It proceeds for 14 mi at 50 mi/h, then 28.3 mi at 48 mi/h, and finally 37.4 mi at 38.3 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h Can u show the steps and answer to it, thanks.
September 27, 2011

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