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Posts by ANON

Total # Posts: 2,820

social studies
Pharaohs from Kush ruled Egypt for almost a century. The rulers from the south encouraged an Egyptian-style culture. They built temples to honor Nubian and Egyptian gods. They dotted the desert with hundreds of tombs. Like earlier pharaohs, they encouraged trade between Africa...

7th grade science
You're welcome. (:

math
determine the linear velocity of a point rotating at 15 revolutions per minute at a distance of 3.04 meters from the center of a rotating object

physics
The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the car. Calculate the acceleration of the car. If you could also tell me how you came to the answer, it would help me in the future. Thank you.

Genetics
In general, what two methods are used to grow bacteria in the laboratory?

Genetics
Name the term used to describe the phenomenon in which a bacteriophage genome incorporates its genome into the chromosome of the host.

physics
application of and the concept of heat and temperature in technology.please can u give me the link.thanks

Algebra
ONE WAS IRRATIONAL ONE KEPT ON REPEATING HIMSELF ONE WAS UNREAL

Russian History xD
Thank you! :D

Russian History xD
I'm doing a project on Russian art, and I'm kinda confused. These are some things I got down. They're just jumbled thoughts. But did communism ending cause the renaissance? Since Russia was a communist country, art used to be used to make the government look good. ...

Russian History
Did Peter the Great end communism?

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 ...

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?

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...

Precalculus
Thank you so much!

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.

Precalculus
Ohmygoodness. Hhaha. Thanks!

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

Precalculus
Write the three cube roots of 8 cis (-30°).

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..

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?

Precalc
*(x + 5)(x^2 - 6x + 13)

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):

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 ...

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 ...

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...

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 ...

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

Precalculus
Thanks!

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?

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

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

Language
The other is bad hair (hare) day. Too funny.

Language
The main (mane) part. Clever.

Language
Toed (Toad) is the first.

science
Arranging species into classes.

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

counciling
Neither, just honest.

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?

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

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

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

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?

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?

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

Math
(2^n) - 1

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

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 ...

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?

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?

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...

Physics
i hate vasts

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

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

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

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

algebra
Thank you!

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

pre calculus
Thank u!

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

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

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

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

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

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

pre calculus
It's ok figured that out on my own :)

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

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 ...

pre calculus
Can someone please help me with this???????

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)

algebra
Someone please help me with this!!!!

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?????

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.

pharcare
thanks:)

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

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 ...

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

algebra
Me too but it gets counted wrong in this format.

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

pre calculus
Thank you!

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

algebra
Thank you!

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

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?

college alegebra
Thank you that helps a lot!

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!

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.

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

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.

critical thinking
i was wrong its actually induction by enumeration.

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

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.

Physics
no clue

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.

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

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

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

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

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!

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.

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