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October 20, 2014

Posts by anon


Total # Posts: 1,384

Russian History
Did Peter the Great end communism?
February 1, 2012

Physics
A speeder traveling at a constant speed of 102 km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (9 km/h)/s until it reaches its maximum speed of 146 km/h, which it maintains until it catches up with the speeder. How long does it take ...
January 28, 2012

Physics
A copper (Cu) weight is placed on top of a 0.24 kg block of wood (density = 0.60*10^3 kg/m3) floating in water. What is the mass of the copper if the top of the wood block is exactly at the water's surface?
January 24, 2012

Precalculus
The figure below shows a conchoid of Nicomedes. The top part is formed by a ray from the origin that rotates through an angle t° with the x-axis. The ray intersects the fixed line y = 2 at point A. From A you measure out 7 more units to point P on the graph of the conchoid...
January 20, 2012

Precalculus
Thank you so much!
January 20, 2012

Precalculus
Given r = 10 cos θ If you sketched an angle of θ = 150 degrees, what quadrant would it be located in? It's either the first or second... I think second? Multiply both sides of r = 10 cos θ by r. Transform the resulting equation into Cartesian coordinates.
January 20, 2012

Precalculus
Ohmygoodness. Hhaha. Thanks!
January 20, 2012

Precalculus
This is probably silly, but where is the 2 in the beginning of all of those from?
January 20, 2012

Precalculus
Write the three cube roots of 8 cis (-30°).
January 20, 2012

Precalculus
So the answer for "Give the equation of the line in rectangular coordinates." is sqrt(x^2+y^2) = 4 [sqrt(x^2+y^2) ]/y? Or is it the y=4? Again, that's probably a silly question..
January 20, 2012

Precalculus
The polar equation of a graph is given below: r=4/sin(theta) Give the equation of the line in rectangular coordinates. If you rotate this graph 40 degrees counterclockwise about the pole, would you add or subtract 40 degrees to θ? Subtract?
January 20, 2012

Precalc
*(x + 5)(x^2 - 6x + 13)
January 20, 2012

Precalc
Given g(x) = (x + 5)(x2 - 6x + 13), find the one real zero of g(x): I think it's -5 Find the two complex zeros of g(x):
January 20, 2012

Precalculus
The figure shows part of a curve traced by a point on the circumference of a circle of radius 4 that rotates, without slipping, around a fixed circle of radius 2. The rotating circle starts with angle t = 0 radians and the point P (x, y) at (10, 0). In this problem you will ...
January 20, 2012

Precalculus
This figure shows concentric circles of radii 3 and 5, respectively, centered at the origin of an xy-coordinate system. A ray from the center at an angle of t degrees to the x-axis cuts the two circles at points A and B. From A, a vertical line is drawn; and from B, a ...
January 20, 2012

Precalculus
QUESTION 1 Joe intercepts a pass 8 yards into the end zone, 19 yards from the right side of the field as he faces the opposite end of the field (see figure). He starts running diagonally, moving at a rate of 4 yd/s down the field and 2 yd/s across the field. Let x and y be his...
January 20, 2012

Precalculus
I don't even how to go about this.... Mars is in an elliptical orbit with the Sun at one focus, as shown in the figure. At its aphelion, Mars is 156 million miles from the Sun. At its perihelion, Mars in only 128 million miles from the Sun. How long is the major axis of ...
January 20, 2012

Precalculus
A geometric series has t1 = 100 and t2 = 90. Find the number to which Sn converges as n gets very large.
January 20, 2012

Precalculus
Thanks!
January 20, 2012

Precalculus
A geometric series has t1 = 3 and r = 2. If tn = 96. What does n equal in this problem? What is the special name given to the terms between 3 and 96 in this problem?
January 20, 2012

Precalc
(10 cis 200) (2 cis 50) = ? Is it just 20cis(10000)?
January 20, 2012

math problem
No. 6(-4)-5(7)=-35, not -2.
January 20, 2012

Language
The other is bad hair (hare) day. Too funny.
January 20, 2012

Language
The main (mane) part. Clever.
January 20, 2012

Language
Toed (Toad) is the first.
January 20, 2012

science
Arranging species into classes.
January 19, 2012

counciling
Maybe about what you learned from one of the sadder times in your life?
January 19, 2012

counciling
Neither, just honest.
January 19, 2012

physics
While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is John’s current position?
January 16, 2012

physics
A jet travels at 434 m/s. How long does it take to travel 294 m? Answer in units of s
January 16, 2012

physics
While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is the distance between town and John’s current location? Answer in units of mi
January 16, 2012

physics
A sound wave, traveling at 348m/s, is emitted by the foghorn of a tugboat. An echo is heard 1.99 s later. How far away is the reflecting object? Answer in units of m
January 16, 2012

Physics
Please show steps and thank you! An astronaut of mass 70 kg carries an empty oxygen tank of mass 14 kg. He throws the tank away from himself with a speed of 3 m/s. With what velocity does the astronaut start to move through space?
January 14, 2012

Physics
PLEASE HELP! and include steps of how you solved it! What magnitude of force, acting for 0.025 s, will change the velocity of a 100 g ball from 30 m/s eastward to 40 m/s westward?
January 14, 2012

Chemistry
How many Calories of energy does it take to heat 257 mL of water by 62.2 C?
January 10, 2012

Math
(2^n) - 1
January 10, 2012

Precalculus
Is this correct? 1. Find the solution set for x^2/(x+3) < 9/(x+3). x^2/(x+3) < 9/(x+3) x^2 < 9 x^2 - 9 < 0 (x-3)(x+3)<0
January 10, 2012

socials
You've neglected to mention economy. Although it is horrid and quite unfortunate, it is a way to regulate population. As prices go up, an increasing number of individuals fail to meet the costs of standards to living. These people can sometimes die from hunger, refrain ...
January 10, 2012

Physics
What magnitude of force, acting for 0.025 s, will change the velocity of a 100 g ball from 30 m/s eastward to 40 m/s westward?
January 8, 2012

PHYSICS 11th
A girl holds a 1.7 kg air rifle loosely and fires a bullet of mass 2 g. The muzzle velocity of the bullet is 160 m/s. What is the magnitude of the recoil velocity of the gun?
January 6, 2012

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

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