# Posts by ANONYMOUS

Total # Posts: 109,664

Precalculus
f(y)=-1/5y^4 What is the power function and constant of variation?

If the abesolute pressur at the bottom of a fresh water pond is 2.313*10^5 PA,what will be the depth of the pond?

french 1
true

History
Thank you

History
Explain the effects of World War II, on both the United States and on Georgia. so far I've got, the economy declined,

Science
When the sun, Earth, and moon are in a line

English

English

English

English
What's Karen doing over there. She is supposed to be studying, but it looks like she is playing Andrew's game.

Algebra
The answer is 1.8816 * 10^25

Algebra
Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88*10^12 miles. Suppose a star is 3.2*10^12 light-years from Earth. In scientific notation, approximately how many miles is it? a) 1.88 * 10...

physics
2. What value did you calculate for the index of refraction of the glass block in Part 2? How does your value compare to the accepted value of 1.53? Calculate the percentage error. Different materials have distinct indexes of refraction. Explain how you might identify a ...

World history
Thanks Ms.Sue

World history
Am i right?

World history
Wait i think the answer is C

World history
I think its A

World history
Need help ASAP What was one result of Hitlers invasion of the soviet union. A: Germany gained access to soviet factory's and farms. B: Stalin fled to the soviet union. C: Germany was able to take control of Leningrad. D: Churchill and Stalin became allies

Social studies

College Algebra
a farmer has 500 feet of fence with which to fence a rectangular plot of land. The plot lies along a river so that only three sides need to be fenced. Estimate the largest area that can be fenc

That's probably correct. It's certainly the best answer of the four. PS -- Do not comment on other students' posts, please.

Calculus
The data is for weekly sales in the dry goods department at a Wal*Mart store in the Northeast. Peak values, I.e. spikes, usually occur at holiday periods. Week 1 is the first week of February 2003. To show continuity, week 1 of 2004 is represented as week 53 since week 53 ...

Calculus
Week Sales in \$ 41 18000 42 16800 43 15200 44 15000 45 13600 46 16000 47 12600 48 14800 49 16800 50 14800 51 15200 52 16000 53 15600 54 15600 55 15000 56 15700 57 15800 58 13800 59 12800 60 14400 61 15800 62 16000 63 12400 64 16200 65 17000 66 18600 67 16000 68 18000 69 19600 ...

Calculus
1. Can you identify holiday periods or special events that cause the spikes in the data? 2. What holiday results in the maximum sales for this department? 3. a) Generate linear and quadratic models for this data. b) What is the marginal sales for this department using each ...

Social studies
The answers are A D A B

Math - Calc
If f(x)=?[1,x^2] t^t dt find f'(x). Another problem similar to this one on my assignment was f(x)=?[1,x] t^t dt, and the answer was f'(x)=x^x. That same pattern would say this answer should be (x^2)^(x^2), but that's not being accepted. What am I missing here? ...

h(x)=?[-3,sin(x)] (cos(t^3)+t) dt

Calculus
The system I'm using says that's wrong What's the process? I don't know how to find the derivative of an integral like this

Calculus

Calculus
find f'(x)= f(x)=?[1,x] t^t dt

Calculus
The velocity function is v(t)=t^2?5t+4 for a particle moving along a line. Find the displacement and the distance traveled by the particle during the time interval [-1,5]. So I found the antiderivative of the function, which gave me t^3/3-5^2/2+4x+c. Then plugging in the given...

Math
8

Math
Penelope's cookie recipe calls for 3/4 of a pound of butter. If she only wants to make 1/2 of the recipe, how many pounds of butter should she use? Show your work.

Maths
fffff

C B+C B A B C B A B+C A

Texas history
2 is B, just took it :)

Vgemistry
What is the oxidation number of sulphur in CuSO4.5H2O?

Calculus
If f(x)=?[3,x]t^5dt, then f'(x)= f'(-3)=

English
A reliable source can it be an editorial or documentary? Confused, because if you can prove they are reliable both could be correct. Any thoughts?

physics
What is the difference between a step-up and a step-down transformer? Give examples where each would be used.

physics
The hood ornament of Abe's car is shaped like a ring 0.06m in diameter. Abe is driving toward the west so that the earth's 5.0x10^-5 T field provides no flux through the hood ornament. What is the induced voltage in the metal ring as Abe turns from this street onto one...

Trig
Find all solutions of the equation in the interval [0,2pi) 2 cos^2 x-cos x = 0 -2cos^2 + cosx + 0 (x+1/2) (x+0/2) (2x+1) (x+0) -1/2,0 2Pi/3, 4pi/3, pi/2, 3pi/2 my teacher circled pi/2 and 3pi/2 What did I do wrong? I don't understand...

Chemistry
CaCO3 => CaO + CO2 (Common Decomp Rxn) 1:1 rxn ratio Ca. moles of CO2 from 49.7g CaCO3 then use Ideal Gas Law to Ca. Vol. CO2. Moles CaCO3 = (49.7g/100g/mole)= 0.497 mole CaCO3 => 0.497 mole CO2. From PV = nRT => V = nRT/P n = 0.497 mole R = 0.08206 L-Atm/mol-K T = ...

Geometry
I got 5, 5, 23,and 23

Geometry
The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side than from the larger side of the rectangle. The perimeter of the rectangle is equal to 56 cm. Find the lengths of the sides of the rectangle.

geometry
The bisector of one of the angles of a rectangle also bisects a side of the rectangle. Find the perimeter of the rectangle if you know that the smaller side of the rectangle is equal to 10 cm. I need the perimeter in cm please

math
In a rhombus ABCD, m?A = 31°. Point O is a point of intersection of diagonals. Find the measures of the angles of triangle ?BOC. I got 15.5 degrees for angle OCB and thats right all I need is the angles for OBC and BOC

Math
A car used 8 gallons of gas to travel 340 miles a mechanic fixed the car. Then it used 7 gallons of gas to travel 350 miles. Gas cost \$4.00 per gallon. How much less to the nearest cent per mile did it cost to run the car after mechanic fixed it

science
If you had a real thermometer that was accurate, how could you modify your experimental thermometer to read actual temperatures?

Math
You are correct.

math
the average stone on the lowest level of the great pyramids was a rectangular prism 5 feet long by 5 feet high by 6 feet deep and weighed 15 tons. what was the volume of the average stone

physics
A step-up transformer has 40 turns on its primary and 100 turns on its secondary. When the primary is supplied with an alternating current at 140 V, what is the voltage across the secondary?

physics
Dean is hunting in the Northwest Territory at a location where the earth's magnetic field is 8.0x 10^-5 T. He shoots at a duck decoy by mistake, and the rubber bullet he is using acquires a charge of 3.0 x 10 ^ -12 C as it leaves his gun at 300m/s, perpendicular to the ...

physics
The hood ornament of Abe's car is shaped like a ring 0.06m in diameter. Abe is driving toward the west so that the earth's 5.0x10^-5 T field provides no flux through the hood ornament. What is the induced voltage in the metal ring as Abe turns from this street onto one...

physics
What is the difference between a step-up and a step-down transformer? Give examples where each would be used.

physics
Evelyn wears glasses whose wire frames are shaped like to circles, each with an area of 7.0x10^-4 m^2. The horizontal component of the earths' magnetic field in Evelyn's hometown is 4.9x10^-5 T. If Evelyn turns her head back and forth, rotating it through 90degrees ...

Physics
A proton accelerates through a particle accelerator, with a final speed of 8.0 x 10^6 m/s. It experiences a magnetic field of 3.0T that is produced by steering magnets inside the accelerator. What is the number of the magnetic force pulling on the proton?

Maths
In a class, 18 children are girls. A quarter of the children are boys. Altogether, how many children are there in the class?

Mathematics
A.J is 100% correct for connexus

Mathematics
A.J is 100% correct for connexus

stat
One of the questions on a survey of 1,000 adults asked if today's children will be better off than their parents (Rasmussen Reports website, October 26, 2012). Representative data are shown in the WEBfile named ChildOutlook. A response of Yes indicates that the adult ...

Math - Probability
.0071 converted to a percentage (multiply by 100) is 0.71 % to the nearest 100th percent.

Art
Why did Pablo Picasso invent Cubism?

science- incomplete

English
Yes, 1 and 2 mean the same thing. "a picture" means "one picture". And 3 means more than one. Adding an "s" to picture makes it plural, more than one. The sentence does not say how many, so it could be two or any number.

Math
What do you mean by solve quadratic?

Math
A rectangular grassy area in a park measures 50 yards by 100 yards. The city wishes to put a uniform sidewalk around the grassy area which would increase the area by 459 yd^2. What is the width of the sidewalk?

Math
Roy has a patio that covers 434 ft^2. He wants to increase his patio 196ft^2 by adding 4 feet to both the length and the width. The length of the original patio is three feet more than twice the width What is the length of the new patio?

physics
What is the energy of a photon of yellow light with a frequency of 5.14 Ã— 1014 Hz?

physics
i did divide the answer in sec but the answer still wrong can you pls do it maybe I'm doing something wrong

physics
Work done by runner = F *d = mg * d = 70 kg * 9.8 m/s2 * (1576 steps * 0.2 m/step) Divide your answer by time in seconds to get power output in Watts. Look up conversion to horsepower.

Physics 30
an 1100 kg car accelerates from rest at 3.4 m/s2. if the horizontal force exetred on the wheels by the road is 5600 N, what force must be resisting the motion of the car? use a free body diagram to illustrate your answer

math
x=5

math
The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side than from the larger side of the rectangle. The perimeter of the rectangle is equal to 56 cm. Find the lengths of the sides of the rectangle.

maths
Root2+root3+root4+root6

Physics
An electric kettle rated accurately at 2.5kw is used to heat 3kg of water from 15% to boiling point it takes 9.5 minute. Then the amount of heat that has been lost is

Physics
none, F = mdV/dt = m a no a, no force

Math
If 1/6 cup of icing covers 2/3 of a cake, how much icing is needed to cover the entire cake? A. 1/9 B. 1/6 C. 1/4 D. 1/18

Physics
A boat travels at 15 m/s in a direction 45° east of north. The boat then turns and travels at 18 m/s in a direction 5° north of east. What is the magnitude of the boat’s resultant velocity? Round your answer to the nearest whole number. What is the direction of ...

Algebra 2

Algebra 2

Physics
A river is flowing at 3mps.A man can swim in still water at a speed of 6mps.The angle at which the bank at which the swimmer should start ,so that he may cross the river along the shortest distance is?

math-incomplete
Is the interest compounded, and if so, how often?

Pre-Calc
Find the values of e,a,b,and c for r=21/5-2costheta?

Math
On a number line, all points are marked that are 3 units away from ?2. Write this requirement using the absolute value sign.

Pre-Calc Trig
Create both a sine and cosine model for height of a passenger off of the ground for each of the following Ferris wheels. 1) customers must climb up 12 foot steps to get into the Ferris wheel (I.e) bottom of Ferris wheel is at the top of the steps Diameter 67ft Rotional speed 1...

Math
The perimeter of a triangle is 42 yards. The first side is 5 yards less than the second side, and the third side is 2 yards less than the first side. What is the length of each side?

Physics
A person with the weight of 691 N stands on a bathroom scale in a motionless elevator. The elevator begins to move and the scale momentarily changes to 499 N. (a) Draw a force diagram of the situation. (b) Create a qualitative vertical equation for this situation. (c) ...

Math
draw a diagram to represent 6 divided by 1/5

physics
a d'arsonval meter movement deflects to 0.8mA. what is the peak value of the alternating current if the instrument uses full-wave rectification?

physics
the current through a meter movement is 150 micro amperes. what is the dc value if the instrument uses half-wave rectification?

economics
When the price of paper increases from ?\$150 to ?\$157 per? ton, the quantity supplied increases from 200 to 210 tons per day. The price elasticity of supply is?

Calculus
After an hour of googling this as you suggested, I still can't find the discussions or proof you were referring to. Can you please either send the link you found or help me with this? I don't know how to even start it. Prove that the function defined by: f(x)={1 if x ...

math
An AP is given k,2k/3,k/3,0....calculate the sum of the first 30 terms

Calculus
Find the area of the region under the curve y=x+2 over the interval [1,4].

Math
A pyramid is a polyhedron for which the base is a polygon and all lateral faces are triangles.

Math
In what shape are the lateral faces of a pyramid?Please hurry!

Math
3 1/2 cans divided by 2 1/4 cans per wall = Number of walls she can paint

Economics
how would supply shift caused by lower costs of production affect price and quantity

science
Height of object is 1 cm placed at a distance of 15 cm from a concave mirror of focal length 10 cm. Find nature, size and position