Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 72,780

**physics **

The lion first runs 200 yards at 20 deg. south of west, then 300 yards at 40 deg. west of north, and finally 400 yards at 10 deg east of north at which point it catches up to the deer. How far from the starting point, and in what direction is the point where the lion and the ...
*October 8, 2014*

**Math**

thank you! :)
*October 8, 2014*

**Math**

(-1, -7)?
*October 8, 2014*

**Math**

Which ordered pairs in the form (x, y) are solutions to the equation 7x – 5y = 28? *Choose all that apply* (−6, −14)** (−1, −7) (4, 10) (7, 9)
*October 8, 2014*

**ap calc**

wouldn't everthing cancel?
*October 8, 2014*

**ap calc**

find the equation of all horizontal tangents to the curve y^2 = (x^2+4)/x, if any exist this is what I have so far: xy^2= x^2+4 2xydy/dx = 2x-y^2 dy/dx = (2x-y^2)/2xy (2x-Y^2)/2xy = 0 2x- Y^2 = 0 I don't know what to do after this
*October 8, 2014*

**ap calc**

the graph of y= (ax+b)/(x-1)(x-4) has a horizontal tangent at the point (2,-1. Find a ANd B. Please help I have ne idea where to start
*October 8, 2014*

**ap calc**

find the equations of ALL horizontal tangents to the curve y^2=(x^2+4)/x, if any exist This is what I have so far: xy^2= x^2+4 2xyDy/Dx =2x-y^2 dy/dx = (2x- y^2)/2xy (2x- y^2)/2xy = 0 2x-y^2 I don't know what to do next
*October 8, 2014*

**chemistry**

20.0 mL of a 2.2 M lead (II) nitrate solution is mixed with 100.0 mL of a 0.75 M magnesium sulfate solution. What is the concentration of nitrate ions in the resulting solution?
*October 8, 2014*

**government**

thank you
*October 8, 2014*

**government**

What is the purpose of the other sixteen amendments other than the Bill of Rights?
*October 8, 2014*

**Algebra**

What quantities could the following expressions represent in terms of the problem context? 1. x+y 2. xR+yG 3. (xB+yK)/(x+y)
*October 8, 2014*

**government**

How do the three branches work within the system of checks and balances?
*October 8, 2014*

**Science**

How does DNA determine a trait such as eye color? A. DNA codes for proteins that determine eye color. B. DNA code for mRNA that detemines eye color. C. DNA interacts with proteins to control eye color. D. DNA contains pigments which make up eye color. Is the answer D? Thanks a...
*October 8, 2014*

**Math**

Thanks alot:)
*October 8, 2014*

**Math**

With A and B I get the same answer.
*October 8, 2014*

**Math**

What answer represents this number in scientific notation? 0.000000916 A. 916*10^-8 B. 9.16*10^-6 C. 916*10^8 D. 9.16*10^6 A? Thanks
*October 8, 2014*

**math**

You have 72 books and 90 DVD's to pack. Your client insists that the books and DVD's have to have the same number of items in them. a)What are the possible numbers of items in each box? b)If you could make the most profit by packing the fewest number of boxes, how many...
*October 8, 2014*

**math**

My advice is that you cant answer it because its not a full question
*October 8, 2014*

**Math**

I agree with Anonymous, Sam, and Anonymous :D. 30 * 28 = 840 So, there are 840 seats.
*October 8, 2014*

**Math**

840
*October 8, 2014*

**CHEM 111**

What is the net ionic equation of Na3PO4 + NH4Cl=?
*October 8, 2014*

**HISTORY**

Check my answers? According to the Articles of Confederation, the Anglican (Episcopal) Church would be the official church of the USA. False The Articles of Confederation left no powers to the states. False George Washington was nearly captured as his troops retreated near New...
*October 8, 2014*

**HISTORY**

True or False In 1778 Parliament adopted a legislation which granted all American demands prior to independence. Not sure if it is true or false because I don't understand the question completely. I know that Parliament did grant all American demands expect for independence.
*October 8, 2014*

**finance**

You have been living in the house you bought 10 years ago for $300,000. At that time, you took out a loan for 80% of the house at a fixed rate 15-year loan at an annual stated rate of 9%. You have just paid off the 120th monthly payment. Interest rates have meanwhile dropped ...
*October 8, 2014*

**Math (Brady??)**

Your welcome.
*October 8, 2014*

**Math (Brady??)**

yes it is
*October 8, 2014*

**Math (Brady??)**

x=-13
*October 8, 2014*

**Math (Brady??)**

x+4=-9 subtract 4 from both sides and that should give you the answer
*October 8, 2014*

**Pre-calc/Trig...**

so the answer is 1 and 3?
*October 8, 2014*

**Pre-calc/Trig...**

which of the following are quadratic functions? check all that apply 1. y=2x^2-3x+7 2. y=3x-4 3. y=(5x-3x^2)/4+1 4. y=x-x^3
*October 8, 2014*

**Calculus I**

cos(2x)−cos(x) = -((sin^2)x + 1/4) Need help solving.
*October 8, 2014*

**CALCULUS HELP NEEDED ASAP!**

Having a lot of trouble with this one: Q) Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the remaining in the lungs even after the deepest exhalation (ie the minimum ...
*October 8, 2014*

**math**

The perimeter of a rectangle is 90 cm. Its width is half its length. Which equation could be solved to find the dimensions of the rectangle?
*October 8, 2014*

**math**

25 – 5x = 80
*October 8, 2014*

**Science**

What kinds of materials tend to be conductors? Insulators?
*October 8, 2014*

**History**

1. What were the Townshend Acts? (1 point) -The British put taxes on imported goods such as tea and glass. (answer) -The British put taxes on hotels and other lodging accommodations. -The British put taxes on newspapers, magazines, and official licenses. -The British put taxes...
*October 8, 2014*

**help**

Identify the function that models (ignoring air resistance) a ball being thrown in the air with an initial velocity of 70 ft/s, from a height of 5 feet.
*October 8, 2014*

**math**

A solution contains 100 mg/mL of a drug, and the recommended dose is 50 mg/lb once a day. How much solution would be needed for one dose to be administered to a 20kg patient?'
*October 7, 2014*

**chemistry**

How many grams are in 2.5 moles of magnesium hydroxide
*October 7, 2014*

**physics**

George, a cliff diver, begins running 3.15 m away from the edge of a 33.3 m high cliff, if he accelerate at a constant rate of 0.76 m/s2 until he runs horizontally off the cliff, then how far away from the base will he hit the water? m
*October 7, 2014*

**statistics**

Mean time 79 min Standard deviation 8 min what is the probability of doing it in 60 min or less
*October 7, 2014*

**7th grade math word problems**

Then do I add that 70 to -243
*October 7, 2014*

**7th grade math word problems**

While scuba diving Quentin descended 2 1/3 feet each second for 30 seconds. If Quentin ended up at a depth of -234 feet before he began his descent, what was his original depth? Do I multiply 2 1/3ft by 30 seconds?
*October 7, 2014*

**Calculus Please Help!**

Not sure how to do this. Asked before but it was hard to type out the symbols in the equation, so I have a screenshot below. exactly Please help! s.yimg(.)com/hd/answers/i/36cad89caaff4061bf38ed04166cbd76_A.png?a=answers&mr=0&x=1412733166&s=e590dacc075a9e04963385d0d299d56a
*October 7, 2014*

**Physics**

A cart released from rest at the top of a track 90. cm long takes 4.00 seconds to reach the bottom. determine the velocity after half the time.
*October 7, 2014*

**Math**

What is amount of money on $40,500 with 6.2 interest rate for a year
*October 7, 2014*

**CHEMISTRY**

If you use a dirty buret, the titrant leaves drops of solution behind as the meniscus descends during delivery of the solution. The volume actually delivered by the buret will be __________ the volume your readings of the buret scale indicate was delivered the same as less ...
*October 7, 2014*

**math**

Carla Compra borrowed $800 at 14% for one year. She paid a $15 processing fee. The interest paid will be $. Thus, the total finance charge (the interest plus the processing fee) will be $ Therefore, to the nearest tenth, the APR = total finance charge ÷ amount borrowed...
*October 7, 2014*

**physics**

an arrow is shot from a crossbow. How long will it take the arrow to accelerate from rest to a speed of 152 m/s if the crossbow can accelerate the arrow at a rate of 1.35 x 10^4
*October 7, 2014*

**Pre-Calc/Trig..**

Write a function for the graph described as a transformation of y=x^2 y=x^2 experiences a vertical stretch of factor 2 and then a shift right of 3 units.
*October 7, 2014*

**Algebra **

The height h(t) measured in feet of an object dropped by an astronaut on the moon can be approximated by h(t) = h0 (0 on the bottom) - 2.7t^2, where h0 is the height from which the object was dropped. About how long would it take an object to fall to the moon (h = 0) if it ...
*October 7, 2014*

**Health**

1. Correct 2. Correct 3. I don't exactly know, but I think C would be the best one. 4. I would think B. When you exercise, having extra water can help, if you are sweating quite a lot. 5. Correct 6. Correct 7. Correct 8. Correct 9. Correct 10. Correct 11. Correct 12. ...
*October 7, 2014*

**Calculus question**

It looks very complicated and I do not know how to even start. Any help would be immensely appreciated. A pendulum has a mass, m, suspended from a rod of length L. At the time t = 0, the pendulum is pulled through an angle θ0 > 0 to the right and given an initial ...
*October 7, 2014*

**Math**

Having a lot of trouble with this one: Q) Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the remaining in the lungs even after the deepest exhalation (ie the minimum ...
*October 7, 2014*

**Calculus help please**

I have to evaluate the following: tan((sin^-1)(2/7)) and sin^-1 (sin(17pi/6)) Please help.
*October 7, 2014*

**MATH**

THE AMOUNT OF CLOTH USED TO MAKE FOUR CURTAINS IS GIVEN BY THE FUNCTION A=-4X^2 + 40X WHERE X IS THE WIDTH OF ONE CURTAIN IN FEET AND a IS THE TOTAL AREA IN SQUARE FEET. FIND THE WIDTH THAT MAXIMIZES THE AREA OF THE CURTAINS. WHAT IS THE MAXIMUM AREA?
*October 7, 2014*

**Science**

Identify the process that represents how organisms grow and replace old are damaged cells. My answer: This process is called mitosis. Am I correct?
*October 7, 2014*

**Science--2 questions! asap!**

During the processes of erosion and deposition, sediments that are the_____ in size will be carried the greatest distances before being deposited. Most___rocks form under conditions found a few kilometers under Earth's surface.
*October 7, 2014*

**Math**

Identify two slopes on line select one to be (x1,y1) and the other (x2,y2) then use the slope equation to solve
*October 7, 2014*

**stats**

18. Numerous studies have found that males report higher self-esteem than females, especially for adolescents (Kling, Hyde, Showers, & Buswell, 1999). Typical results show a mean self-esteem score of M = 39.0 with SS = 60.2 for a sample of n =10 male adolescents and a mean of ...
*October 7, 2014*

**Algebra**

Which expressions would complete this equation so that it has one solution? 4(2x – 3) – 4x = Choose exactly two answers that are correct. A. 4x – 12 B. 3x – 4 C. 3(2x – 6) D. 4(x – 5)
*October 7, 2014*

**Algebra**

hgvgh
*October 7, 2014*

**Algebra **

The height h(t) measured in feet of an object dropped by an astronaut on the moon can be approximated by h(t) = h0 (0 on the bottom) - 2.7t^2, where h0 is the height from which the object was dropped. About how long would it take an object to fall to the moon (h = 0) if it ...
*October 7, 2014*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=(x+5)^2
*October 7, 2014*

**Math**

GCF is 10
*October 7, 2014*

**Math **

leslie is in charge of packing snacks for her class. she has 30 cookies and 20 apples. she wants to put the same number of cookies and the same number of apples in each pack. what are the possible numbers of packs she can make? how many items are in each bag?
*October 7, 2014*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=x^2+7
*October 7, 2014*

**cal 33**

I have a quick question. When I did this I got my derivative but one question is asking when Rearranging this, we get 8y7y' = ???? i dont know We now have d/ dx [x5 + y8] = 5x4 + 8y7y' = d/ dx [9] = 0. Solving for y', we conclude that the derivative is y' = -5x...
*October 7, 2014*

**CAL**

Hi, im lost in theses three problems. Please help. Thank you so much!!! 1. Write the composite function in the form f(g(x)). [Identify the inner function u = g(x) and the outer function y = f(u).] y = 3 squareroot all 1 + 5x (g(x), f(u)) = ??????? Find the derivative dy/dx. 2...
*October 7, 2014*

**Math**

1.645 does round to 1.65. Since there is a 5 before the 4, it rounds the 4 up to 5. With 5's, you round up, so the 4 goes up a number to 5 in 1.65. Therefore, 1.645 can be rounded to 1.65. I hope this helps! :)
*October 7, 2014*

**Math**

Does 1.645 round to 1.65?
*October 7, 2014*

**Statistics**

A household appliance manufacturer wants to analyze the relationship between total sales and the company's three primary means of advertising (television, magazines, and radio). All values are in millions of dollars. They found the following regression equation. Sales = ...
*October 7, 2014*

**p.e**

Which of the following is a factor in which you have little control that determines your weight? A. hereditary B. Activity level C. Peers D. Body composition C?
*October 7, 2014*

**Math22 **

1. Write the composite function in the form f(g(x)). [Identify the inner function u = g(x) and the outer function y = f(u).] y= (g(x), f(u)) = 2. Write the composite function in the form f(g(x)). [Identify the inner function u = g(x) and the outer function y = f(u).] y = ...
*October 7, 2014*

**child day care**

I copied & paste this by mistake sorry
*October 7, 2014*

**English**

nvm got this one
*October 7, 2014*

**English**

is it C??? The author writes that the nobles had "resumed their ancient license in its utmost extent." This means that the nobles had sought to __________. unite with nobles from other nations pay homage and give respect to the king despite his absence strengthen ...
*October 7, 2014*

**chemistry**

Mass (g) of solute in 179.8 mL of 0.267 M calcium acetate
*October 7, 2014*

**calculus 1**

Suppose that a person’s blood pressure at time t in seconds is given by p(t) = 100 + 18 sin (7t). (a) During each heartbeat, what is the systolic pressure (maximum blood pressure) and the diastolic pressure (minimum blood pressure)? (b) According to this model, how many ...
*October 7, 2014*

**MATH**

Apologies, I meant" -((sin^2)x + 1/4) "
*October 7, 2014*

**MATH**

Solve the following equations for x where 0 ≤ x < 2π. tan(x)sin(2x) = √3 sin (x) and cos(2x)−cos(x) = −sin2(x)+1/4 Stuck on these particular types. Have no idea how to start.
*October 7, 2014*

**Calculus**

Simplify the expression cot (cos−1(x)). Not sure how to do this.
*October 7, 2014*

**English**

okay, thank you!
*October 7, 2014*

**English**

Am i correct? Since I have never actually been on a plane, my fear of flying is purely __________; my fear of tight spaces, however, is __________ and based on past experiences. acute…deliberate fatuous…gregarious theoretical…authentic <--- inane…querulous
*October 7, 2014*

**science **

Astronomers think planets formed from interstellar dust and gases that clumped together in a process called _____. stellar evolution nebular aggregation planetary accretion nuclear fusion
*October 7, 2014*

**English**

yes i think it's d? am i correct?
*October 7, 2014*

**English**

The damage those rumors did to the actor's reputation is __________, so it is somewhat understandable that he became so __________ and bitter towards the members of the press who spread lies about him. genial…zealous odious…impeccable wanton…sublime ...
*October 7, 2014*

**histery**

Using the Internet, encyclopedia, and/other reference material for research, write a 1,000-word report on feudalism in the history in one of the following countries: •France •England •Germany Include the approximate years when feudalism began and ended in that ...
*October 7, 2014*

**Algebra **

Are the zeros of g(x) = 2x^2 - 12x + 40 and g(x) = x^2 - 6x + 20 the same?
*October 7, 2014*

**SS**

What are some examples of contrasting landforms? (Desert/glacier, etc)
*October 7, 2014*

**Biology**

How is PKU related to homeostasis?
*October 7, 2014*

**Math**

What is -3.702 + -9.78?
*October 7, 2014*

**Physics Help Fast Please :)**

Oops. Forgot my homework -- maybe I can get some sucker to do it for me. Hmmm...
*October 7, 2014*

**physics intro**

p = mv at its peak, v=0 same speed as it hits as when it left
*October 7, 2014*

**CHEMISTRY 56**

Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant. For example, the residual pressure in a can is 1.16atm when it is sitting on a shelf at...
*October 7, 2014*

**bank loans**

if i barrow $3000 at a bank for 12% simple interest for 18 months how much are my monthly payments?
*October 7, 2014*

**Grammar**

What is the correct pronoun for each sentence? 1. The first girl chosen was (she,her). 2. He treasure hunters, (he and her, he and she), were interviewed by reporters. 3. Mike and (she,her) are leaving tomorrow. 4. Lebron and (he, him) have been inseparable since third grade. ...
*October 7, 2014*

**physics**

A force is applied to an initially stationary block of mass 1.75 kg that sits on a horizontal floor as shown. The 53.5 N force is applied at θ = 32° angle. The coefficients of friction between the floor and the block are μs = 0.593 and μk = 0.343. What is ...
*October 7, 2014*

**Physical geography **

On the windward side of the mountain,should the relative humidity of the parcel change as it rises from 2000 m to 4000m?
*October 6, 2014*

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