Sunday

February 7, 2016
Total # Posts: 2,856

**Math - Trigonometry**

Well think about it. The period of cos(x) is 2pi, 114pi = 358.14, so cos(x) repeats 114/2 = 57 times. So the answer is 57*2 = 144, but since cosine is split over y axis on the first period (calculatorsoup dot com/images/trig_plots/graph_cos_pi.gif) we add 1 to 144, and get 145.
*October 15, 2013*

**Math**

Oh, and 10/9 is the same thing as 1 1/9, so you were right.
*October 13, 2013*

**Math**

3^0+3^(-2) = 1 + 1/9 = 9/9 + 1/9 = 10/9 = 1.1111111...
*October 13, 2013*

**science**

what is a catalyst converter
*October 13, 2013*

**Algebra**

Never mind, I got it.
*October 13, 2013*

**Algebra**

Is the Riemann Hypothesis correct? Why or why not? Please show your work.
*October 13, 2013*

**Math**

Find the length of the arc (sector question) Radius=8cm Angle=27
*October 7, 2013*

**math**

Determine the vertex and the axis of symmetry for the function below: y=-4x^2-24x-36
*October 7, 2013*

**math**

I also need to know the answer of this work sheet P.S. Teachers this is a site for students. Please don't be pedantic and go away from the site.
*October 6, 2013*

**math**

A quadrant has an area of 175m2. Find the length of its base
*October 6, 2013*

**Physics**

A rocket moves upward, starting from rest with an acceleration of 28.1 m/s2 for 5.21 s. It runs out of fuel at the end of the 5.21 s, but does not stop. How high does it rise above the ground?
*October 5, 2013*

**Math**

I checked the question again but that is all it wrote
*October 5, 2013*

**Math**

In one revolution a wheel moves forward a distance equal to its circumference. This is because the wheel Always in contact with the floor. 1)A trundle wheel clicks everytime. What is the radius of the wheel
*October 5, 2013*

**Math**

The diameter of a bicycle wheel is 65 cm How many revolutions are needed to make the bike travel 2km
*October 5, 2013*

**Math**

Then would the answer be 43.98???
*October 5, 2013*

**Math**

A running track has 8 lanes each a meter wide.Each"straight" is 100 meters long. The distance around the track for someone running in the middle of the inside lane is 400 meters. What is the distance around the track for someone running in the middle of the outside ...
*October 5, 2013*

**business**

The type of accounting concerned with providing information and analyses to managers within the organization is referred to as
*October 3, 2013*

**Anatomy**

Because
*October 3, 2013*

**adv algebra hw**

Let x,y,z be positive real numbers such that: xyz=945 x(y+1)+y(z+1)+z(x+1)=385. What is the minimum possible value of z+y/2+x/4?
*October 1, 2013*

**Astronomy**

This is part of Coursera class final exam (From the Big Bang to Dark Energy by Hitoshi Murayama). I think it's OK to learn about the Higgs via lectures or web searches. But asking for folk to answer the question is cheating.
*October 1, 2013*

**science **

What is a possible hypothesis that could be tested in the Atomic Theory lab?
*September 30, 2013*

**delftx**

For Question 1: 2440 Total PV output = 1000W/m2×18%×10m2=1800W PV module costs = 1800W×€0.8/Wp=€1440. Non-modular costs = €100/m2×10m2=€1000. Total cost = PV module costs + non-modular costs = €2440.
*September 29, 2013*

**chem**

How many grams of NH3 are required to make 52.7g H2O in the following reaction : 4NH3+6NO->5N2+6H2O
*September 28, 2013*

**chem**

Correction!! in the question its **12CO2**
*September 28, 2013*

**chem**

Help a brother out!!! please!!!Nitroglycerin, C3H5N3O9 decomposes to form N2,CO2,H2O, and O2 4(C3H5N3O9)-> 6N2+12O2+10H20+O2 a)How many grams of water would be produced if 75g of nitroglycerin decompose? b)The creation of 3.89 moles of C02 would require how many grams of ...
*September 28, 2013*

**us history**

Compare and contrast the goasl and strategies of the Reconstruction of TWO of the following -President -Lincon -Johnson -Congressional Republicans
*September 26, 2013*

**us history**

Describe the long-term political and economic effects of the Reconstruction and southern reaction on African Americans
*September 26, 2013*

**us history**

Explain whether slavery or representation was the main cause of disunion. You may incorporate two of the following to support your answer -The Missouri Compromise -The Free-Soil Movement -Compromise of 1850 -Kansas-Nebraska Act, 1854 -Bleeding Kansas Dred Scott v. Sandford
*September 26, 2013*

**us history**

Analyze the ways that the Free-Soil movement influenced U.S politics from 1820-1860. Explain the significance of this movement.
*September 26, 2013*

**physics**

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?
*September 25, 2013*

**physics**

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?
*September 25, 2013*

**physics**

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?
*September 25, 2013*

**geometry**

15
*September 23, 2013*

**Biology**

False
*September 21, 2013*

**computers**

Networks are often set up in the client/server network arrangement. Raheem has learned that this is a very common type of network arrangement. Discuss two things that Raheem should be concerned with if he decided upon a client/server network arrangement?
*September 18, 2013*

**Algebra**

It was such a vile inn
*September 17, 2013*

**Statistics**

don't know
*September 14, 2013*

**geometry**

If BC = 16 and AC = 29, find AB.
*September 11, 2013*

**mitx 8.01x Classical Mechanics**

4.981
*September 10, 2013*

**college math**

lol this isn't "college math"; but the answer otherwise is 63+6 because(-9)(-7)=63
*September 8, 2013*

**college math**

answer is -25
*September 8, 2013*

**Math**

Alright I got it thanks so much!!
*September 8, 2013*

**Math**

Okay, I'm in a calculus class but stuck on some algebra...it's not crucial that I get the answer to this but I'm wracking my brain because I can't remember how the following is obtained; if you can show me how this is done in steps I'd greatly appreciate it...
*September 8, 2013*

**Statistics / Business**

According to the National Humane Society, "Stray Cost" or the cost of the care and feeding for a stray dog is $419.00 per year. This amount does not include veterinarian care, but only food, water and shelter. It was found that the standard deviation of this "...
*September 8, 2013*

**law**

Yes there are some issues
*September 7, 2013*

**computer science**

Write the " 7−2" expression so that no answer includes negative exponents. Assume the variables are nonzero
*September 6, 2013*

**main ideas**

Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. A greenhouse used for plants stays warm because sunlight and heat coming through the glass roof are mostly trapped. The heat doesn't radiate back into the atmosphere ...
*September 6, 2013*

**algebra 1**

the monkey stole my banana
*September 6, 2013*

**Geography**

i don't know look it up dude or dudette
*September 5, 2013*

**Math**

Hi I'm Bob
*September 3, 2013*

**chemistry**

4.0*10^-6
*September 1, 2013*

**Health**

what is it
*August 22, 2013*

**PSP**

The sentence "P ¨ Q" is read as (Points : 1) P or Q P and Q If P then Q Q if and only
*August 21, 2013*

**math**

Find the remainder when 33! is divided by 37. Please give full solution.
*August 12, 2013*

**eng**

Imagine that there is a fire in your house or apartment, and you only have 5 minutes to grab your possessions and get out. Everything you leave behind will be destroyed. What would you grab? Why? When you think about what you left behind, are you sad that you lost it or happy ...
*August 9, 2013*

**statistic**

A die is rolled 600 times. The face with six spots appears 112 times. Is the die biased towards that face, or is this just chance variation? The null hypothesis is: he null hypothesis is The die is biased towards the face with six spots. The chance that the face with six spots...
*July 31, 2013*

**problem solving**

How much space does the dining area take up? 100 guests, each guest requires 3m2 in the dining area, the average mass of each guest is 65 kg, and the average density of the dining area is 10kg/m2 How I can resolve this problem?
*July 28, 2013*

**problem solving**

100 guests each guest needs 3 m2 of space average density of the area is 10kg/m2. how much space does the dining room take up?
*July 28, 2013*

**Physics (help steve)**

A thin aluminum ring hangs vertically from a torsion spring. A torsion spring when twisted exerts a restoring torque given by τ=−κθ where θ is the angle of twist. Suppose that the ring undergoes small torsional oscillations while it is being cooled ...
*July 5, 2013*

**physics**

In the following figure m_1 = 20.0kg kg and á alpha = 50.9 ∘ ^\circ. The coefficient of kinetic friction between the block and the incline is ì k = 0.40 What must be the mass m 2 of the hanging block if it is to descend 9.00m m in the first 3.00s s after ...
*July 4, 2013*

**Math (please help steve)**

The Chicago Art Museum's Renaissance display consists of four hallways bordered around a square courtyard. A single guard is assigned to patrol the four hallways. When the guard starts working, he begins in one of the corners and walks clockwise. When he arrives at a ...
*July 1, 2013*

**Calculus (help steve)**

But thanks for all the help.
*June 28, 2013*

**Calculus (help steve)**

It's not right either. I know, I'm stumped too.
*June 28, 2013*

**Calculus (help steve)**

Thanks Steve. But apparently, that's not the right answer, since a and b are not local minimum and maximum values.
*June 28, 2013*

**Calculus (help steve)**

f(x)=−8x^3+6ax^2−3bx+4 has a local minimum at x=1 and a local maximum at x=3. If a and b are the local minimum and maximum, respectively, what is the absolute value of a+b?
*June 28, 2013*

**Math (Limits)**

(1,0) is a point on the parabola y=2x(x−1). From point A, point P is moving along the curve towards the origin O(0,0). As P→O, sec^2∠APO→N, where N is a positive integer. What is the value of N?
*June 27, 2013*

**Math (Calculus)**

A(1,0) is a point on the parabola y=2x(x−1). From point A, point P is moving along the curve towards the origin O(0,0). As P → O, sec^2∠APO → N, where N is a positive integer. What is the value of N?
*June 27, 2013*

**Physic**

please check your question, kinetic energy is not measured in kg, it's measured in joules
*June 27, 2013*

**physics**

1/2mv^2=1/2(8)(12)^2=576
*June 27, 2013*

**math**

Anne wants to tie a support line from the top of a 50 foot radio tower to an anchor spot 30 feet from the tower’s base. Approximately how long will the line need to be?
*June 20, 2013*

**Math**

Determine the digits of Y from these clues. The digits of Y add to 18. The first digit is 3 times the third digit. The second digit is 2 times the third digit. Y is a three digit number.
*June 18, 2013*

**Physics**

Optical fibers are devices used for guiding light in many applications, most notably for fast communication. A fiber consists of a glass cylinder surrounded by a wall covered in a special coating. The fibers work on a principle called total internal reflection: light enters ...
*June 18, 2013*

**Math**

835
*June 18, 2013*

**Math**

Thanks
*June 18, 2013*

**Math**

γ is a permutation on eight elements, though you are not told which permutation it is. If γ is applied to an 8-element set, what is the minimum number of additional timeswe must apply γ to the resulting set in order to guarantee the set is back in its original ...
*June 18, 2013*

**Math**

ABC is a triangle with ∠BAC=60∘. It has an incircle Γ, which is tangential to BC at D. It is given that BD=3 and DC=4. What is the value of [ABC]^2?
*June 17, 2013*

**Math**

In first gear, or low gear, an automobile's engine runs about three times as fast as the drive shaft. In second gear, the engine does not have to run as fast; usually it runs about 1.6 times faster than the drive shaft. Finally, in third, or high gear, the engine runs at ...
*June 17, 2013*

**Math**

I = E/R A car has a 12 volt battery. The engine has a resistance of 0.22 ohms. How many amps will be drawn from the battery when the key is turned? I (to the nearest hundredth) = amperes
*June 17, 2013*

**Math**

plz answer it, i need to know by tonight
*June 14, 2013*

**Math**

Triangle ABC has ∠A=40∘, ∠B=60∘, ∠C=80∘. Points M,N trisect the side BC and points P,Q trisect the side AC. The lines AM,AN,BP,BQ intersect at the points S,T,U,V as shown in the figure below, dividing the triangle into 9 regions. Determine ...
*June 14, 2013*

**physics**

According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy “Dizzy” Carlyle in a minor league game. The ball traveled 188 {\rm m} (618 {\rm ft}) before landing on the ground outside the ballpark part a Assuming the ball's ...
*June 14, 2013*

**math**

how do you add, subtract, multiply, and divide fractions
*June 12, 2013*

**English**

She could have been an Olympic figure skater, but she has quit practicing. What is the linking verb in the sentence?
*June 12, 2013*

**Physics**

While Driving Around A Curve Of 200 M Radius, You Notice That The fuzzy dice Hanging From The Rear-view Mirror Hangs At An Angle Of 15 Degree To The Vertical. 1.) What is the force diagram for the dice? 2.) What are the equations of motion in the horizontal and vertical ...
*June 11, 2013*

**law**

thank you for being so specific
*June 9, 2013*

**law**

what does it mean when Steven said The case has nothing to do with 'disagreeable ideas' in the Texas v Johnson case?
*June 9, 2013*

**math**

sorry for before it is my first time using this website and this is the real question in a geometric series t1=23,t3=92 and the sum of all of the terms of the series is 62813. How many terms are in the series?
*June 3, 2013*

**math**

in a geometric series t1=23,t3=92 and the sum of all of the terms of the series is 6813. How many terms are in the series
*June 3, 2013*

**math**

In a geometric series, t1=12 and s3=372.what is the greatest possible value for t5?
*June 3, 2013*

**geometry**

the surface areas of two similar solids are 340 yd2 and 1158 yd2 the volume of the larger solids is 1712 yd3 what is the volume of the smaller solid?
*May 30, 2013*

**math**

find two numbers in the ratio of 2 to 5 that have a sum of 119.
*May 28, 2013*

**Math**

resolve the vector v=[7, 9] into rectangular components, one of which is in the direction of [6, 2]
*May 27, 2013*

**Math**

Name 3 consecutive odd integers (X,X+2,X+4) The difference between 2X and X+4 =(X+2)-24 Can you show HOW to solve?
*May 24, 2013*

**Social Studies**

#2-C #3-D
*May 24, 2013*

**math**

poop
*May 23, 2013*

**algebra!!!! please help me!!!!**

@Steve it's not √2+√3+√5,,, it's √(2+√3+√5)...
*May 22, 2013*

**algebra!!!! please help me!!!!**

A number is called algebraic if there is a polynomial with rational coefficients for which the number is a root. For example, √2 is algebraic because it is a root of the polynomial x^2−2. The number √(2+√3+√5)is also algebraic because it is a root...
*May 22, 2013*

**world geography**

17. The last great empire centered in Southwest Asia was the _______ Empire. A. Roman B. Mongol C. Byzantine D. Ottoman <-----
*May 19, 2013*