# Posts by Nancy

Total # Posts: 817

**calculus**

a circle of radius 1 rolls around the outside of a circle of radius 2 without slipping. the curve traced by a point on the circumfarence of the smaller circle is callled an epicycloid. use the angle theta to find a set of parametric equations for this curve.

**calculus**

thank you..

**calculus**

a toy wagon is pulled by exerting a force of 15 pounds on a handle that makes a 30 degree angle with the horizontal. find the work done in pulling the wagon 50 feet.

**calculus**

thanks

**calculus**

a 100 pound collar slides on a frictionless vertical rod. find the distance y for which the system is in equilibrium if the counterweight weights 120 pounds.

**calculus**

a circle of radius 1 rolls around the outside of a circle of radius 2 without slipping. the curve traced by a point on the circumfarence of the smaller circle is callled an epicycloid. use the angle theta to find a set of parametric equations for this curve.

**math**

Find the Magnitude and direction of the resultant force. three forces with magnitude of 50,20, and 40 points acting on an object at angle 60 degres, 30 degrees, and -90degrees,k respectevly with the positive x-axis.

**math**

thanks

**math**

A golf ball is hit off the ground at an angle of pie/6 and it travels 400 ft. How long was the golf ball in the air?

**math**

Thanks

**math**

How many pounds of Acid Per inch? If you have a tank that’s 51ft 0 in. long by 4ft 7 in. wide, and need to fill it to the two inch mark with hydrochloric acid, how many pounds are you putting in it? (Hint 1 gallon of acid weights 9.8 lbs.

**math**

A bicycle wheel has a diameter of 26 inches. About how far will it travel in one revolution?

**math**

its a 75

**math**

thanks, after multipling i got 2855.72 lbs would that be correct..

**math**

How Many pounds of acid per inch? If you have a tank of 51ft long by 4ft 7in wide, and need to fill it to the two inch mark with hydrochloric acid, how many pounds are you putting in it? (Hint 1 gallon of acid weights 9.8 lbs. Nancy 2:28

**chemistry**

A 4.50e-2 M solution of unknown monoprotic weak base has a pH of 10.200 what is the value of kb for the base

**chemistry**

What is the pH of a .10M (CH3)3N solution? Kb=6.40e-5

**Math**

If you have a tank of 51ft long by 4.7ft wide, and need to fill it to the two inch mark with hydrochloric acid, how many pounds are you putting in it? (Hint 1 gallon of acid weights 9.8 lbs.

**physics**

If you have a tank of 51ft long by 4.7ft wide, and need to fill it to the two inch mark with hydrochloric acid, how many pounds are you putting in it? (Hint 1 gallon of acid weights 9.8 lbs.

**science**

Q. 2. Describe a rocket propelled in 30 degrees north of east with a velocity of 5m/s?

**chemistry**

The thermite reaction is a very exothermic reaction; it has been used to produce liquid iron for welding. A mixture of 2 mol of powdered aluminum metal and 1 mol of iron(III) oxide yields liquid iron and solid aluminum oxide. How many grams of the mixture are needed to produce...

**northgate**

john bunyan's the pilgrim's progress is an allegory, that is, he used names to present abstract qualities. explain how vanity fair, obstinate, pliable, help and faithful demonstrate the traits for which they are named, and how they affect christian's journey.

**history**

I have to do a paper on the railroad strike of 1877, but I find that there is too many websites. My teacher does not want us to use Wikipedia since the information changes too much. I have looked at all of them, but cannot find a good one. We have to include the struggles it ...

**Finance**

LaJolla Securities, Inc. specializes in the underwriting of small companies The terms of a recent offering were as follows: Number of shares 2 million Offering price $25 per share Net proceeds $45 million LaJolla Securities expenses, associated withthe offering, were $500,000...

**Finance**

LaJolla Securities Inc., specializes in the underwriting of small companies. The terms of a recent offering were as follows: Number of shares 2 million Offering price

**Finance**

The Norman Company needs to raise $50 million of new equity capital. Its common stock is currently selling for $50 per share. The investment bankers require an underwriting spread of 3 percent of the offering price. The company's legal, accounting and printing expenses, ...

**Financial Accounting**

Here is the problem: if you could just help me get started in the right direction that would be great, I don't even know where to begin with this question ellar Company was established to manufacture components for the auto industry. The components are shipped the same day...

**English**

Jem's description is so exaggerated that it could not have possibly come from an adult. As I recall, Jem says that Boo goes around scaring people at night, and eats dead cats. No mature adult would say these things about a socially awkward individual.

**ALGEBRA**

-6(x+3)=-6x+5 first, distribute the -6, resulting in: -6x-18=-6x+5 as you can see, these two equations are not the same. if you simplify it further, you get: -6x=-6x+23 for the second equation, after distributing the 8 and simplifying both sides, you get x=x, so x can be ...

**statistics**

it is the same as 9x10^-4, or .0009

**geometry**

since G is on the perpendicular bisector of AH, then AG=BG. set the two equations as equal to each other and then solve

**4gr math**

one yard equals 3 feet or 36 inches

**math**

114

**Algebra**

-3(x^2+2)=102 x^2+2=102/-3 x^2=-34-2 x=sqrt32

**math**

its sqrt 3+ sqrt5. not 3+ sqrt5

**math**

Find a polynomial with integer coefficients such that (sqrt3 + sqrt5) is a root of the polynomial

**math**

Find a polynomial with integer coefficients such that (sqrt3 + sqrt5) is a root of the polynomial

**math**

find a polynomial with integer coefficients such that square root of 3 + square root of 5 is a root of the polynomial

**math**

how many zeros is in 2010!(2010 factorial)?

**math**

w=d/t let x=80, so (80+80)/(8hs+10hrs) =8.8889 mi/hour

**math**

find a formula that gives the maximum number of enclosed regions formed by n lines

**Math**

2.34x10^7=23400000 1.7x10^12=1700000000000

**statistics**

540/1038=52.02%

**Chemistry**

Hydrochloric acid can be prepared using the reaction described by the chemical equation: 2 NaCl(s) + H2SO4(l) ----> 2 HCl(g) + Na2 SO4(s). How many grams of HCl can be prepared from 393 g of H2SO4 and 4.00 moles of NaCl?

**math**

find a polynomial with integer coefficients such that square root of 3 + square root of 5 is a root of the polynomial

**Math**

Randy deposits $7,540 in a bank account that pays 4.5 percent simple interest. If he doesn't change the principle, what will his balance be in 10 years?

**nutrition**

Pregnancy obviously results in an increased need for vitamins and minerals. Deficiency or excess of any of a number of nutrients can lead to birth defects and/or complications during pregnancy

**Global History**

ok never mind sorry thank you so much :]

**Global History**

all men had to do what during military expansion during the Meiji Restoration?

**Global History**

Japan fights an imperialistic war with Russia Called the?

**Global History**

4 improvements during Meiji Restoration

**Global History**

How were European nations able to dominate non-European areas?

**Math/Precal**

what is the first term of an arithmetic sequence if the 7th term is 21 and the 10th term is 126

**healthcare**

compose a list identifying the major components of health communication. who is involved in each component? how does each component promote health communincation? in not utilized, how would it reduce health communincation? provide examples.

**calculus**

find the area of the region enclosed by y= square root of x, y=x-2, and y=0. i use f(x) - g(x) and got the answer to be 2, but my classmate got 8/3 do i'm really confuse don't know whats the answer.

**Calculus**

Find the surface area formed by revolving the graph of f(x)=81-x^2 on the interval [0,9] about the y-axis. (express the answer in terms of pie.)

**math-cal.**

find the volume of the solid formed by revolving the region bounded by the graph of y=2x^2+4x and y=0 about the y- axis ( express the answernin terms of pie)

**calculus**

find the volume of the solid formed by revolving the region bounded by the graphs of y=x^3,y=1, and x=2 about the x-axis using the disk method. 9 express the answer in terms of pie) i got the answer to be 3/5 pie but im not sure if is right. i used the formula V=(pie)(r)^2W

**Accounting**

The question is: Compute the recent two years’ cash flow on total assets ratios for this company. This is the info given: Operating cash flow for current year (in millions): $1,762 1 year prior - $1,740 2 years prior - $1,981 Total Assets for current year - $13,570 1 year...

**2nd grade**

The first set of letters has all straight letters and the second set of letters are all curved in some sort!!! I seriously sat there four hours trying to figure out what the heck they were talking about, I actually tried sounding them all out thinking that was what they were ...

**6th /7th grade science**

Current issue like global warming

**Statistics**

I am trying to work a case problem, I have to take a group of numbers and using the data by product line, there is three different products lines, I need to compile a breakdown of sales by product then give a total of all three. then I need to find the expected sales for each ...

**math**

wheels bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. What did the bicycle sell for regularly? What is the amount of the new discount?

**hca/210**

three cuases for the increasing cost of healthcare and what affect does each have on society

**Calc.**

a bomb is dropped drom an airplane at an altitude of 14,400 feet how long would it take to reach the ground? (because the motion of the plane, the fall will not be vertical, but the time will be the same as that for a vertical fall.) the plane is moving at 600miles per hour. ...

**Calculus**

the grand canyon is 1600 meters deep at its deeoest point. a rock is dropped fromthe rim above this point. Express the height of the rock as a function T in seconds. how long will it take the rock to hit the canyon floor? H= 1600-1/2t^2 thats what i got as a function is that ...

**Calc.**

ok, i know what it is had forgotten we use that but its in my notes thanks!!!!

**Calc.**

find the derivative of 3x^4-5x+3/x^4+1 i know that the derivative of the numeratoor would be 12x^3-5 but i'm not sure if its right since it has a denominator i Know i need to do something to it but not sure if to simplify.

**Calculus**

A fully plane has a constant acceleration while moving down a runaway. the plane requires .7 mile of runaway and a speed of 160 miles per hour in order to lift off. what is the planes accelearation? i need the formula cause the one i have doesnt work cause i need time

**biology**

I have the same question and do not understand it, well i do. Just need help to set it up. Well the punnett square

**Physics**

Please reply soon!

**Physics**

If we take a point of reference that is a certain distance away from where the force is applied and the force is acting on the same axis as the distance axis i.e. the force vector and the distance vector are on the same axis, only in opposite directions, would the torque of ...

**social studies**

if the issue is whether a person is civil rights were violated in court desicion through what levels of courts might that person appeal?

**Anatomy & Physiology**

Excercising muscle will receive more oxygen from hemoglobin than will relaxed muscle because: a)it's PO2 is low b)it's PCO2 is high c)both a and b d)both a and b and its temp is higher than usual

**Anatomy & Physiology**

In the fetus, the organ that is important for the normal development of the immune system is the? liver? spleen? thymus gland? lymph node?

**Chemistry**

How many moles of ions are released when these samples are dissolved in water? a. 0.37 mol of NH4Cl b. 3.55 * 10^18 formula units of Ba(OH)2 * 8H2O I need to know what steps to take to get to the answer. Thanks!

**chemistry**

i need help to make a data for my project but i don't know how close can a magnet be from the staples after it will pick up the objects but i don't know how to put in a data

**college**

what would be a good exsample of ecological from the RIMs?

**Life orientation**

We humans hace never sacrifice individual liberties in the nasme of freedom

**Physics**

How does the drag force on an object change if the object's area is halved while the wind speed is doubled, while keeping everything else the same? i think it would double if you use this eqn: f= 1/4 A v^2 can someone verify if this eqn is correct to use in this problem?

**physics**

An object slides down a inclined surface in the presence of kinetic friction forces. At the given inclination the kinetic friction force is found to be of magnitude 90 N. Now, the angle that the surface makes with respect to the horizontal is increased and the object continues...

**physics**

Thank you. I just wanted to confirm that this was the right way to do the question. Just another clarification. In the FBD for this question, would the kinetic friction force be in the positive horizontal direction i.e. in the direction the rider was moving before he braked?

**physics**

A bicycle and rider of total weight 815 N travel at a speed of 40.0 km/h. The rider hits the breaks and the bicycle slides to a full stop in a distance of 8.5 m. Ignore air resistance and use g=9.8 m/s2. What is the coefficient of kinetic friction between the tires (rubber) ...

**Angles -- Math?**

if there is a hill at an incline of 50 degrees from the horizontal..is it true that at any point on that hill a horizontal "cut" would make an angle of 50 degrees?

**math**

Find the missing numbers and landmarks for the set of numbers 48,50,51,51,57,59,60,63,69,_,76,_ Range Mode: 76 Minimum: Maxium: 76

**math**

what is 30 percent of $82,000.00

**geography**

what r the five themes of geography for moscow, russia

**physics**

A fly lands on one wall of a room. The lower left-hand corner of the wall is selected as the origin of a two-dimensional Cartesian coordinate system. The fly is located at the point having coordinates (1.80, 1.15) m. (a) How far is it from the corner of the room?

**math prime factorization**

3x3x5

**math**

compare the 2 numbers 1,945____ 1,936

**rounding**

2767 if the number is 2767 then how do u round it to the nearest tenth

**Math**

thanks bob :)

**Math**

there are 2 pts in a qt right?

**Math**

You can buy three bottles of dishwashing liquid, each containing 1 pt 5 fl oz, on sale for $2.30. Let say for the same price you can buy a large container holding 2 qt. Which is the better buy?

**5th grade English**

Hi Good Answers they are correct

**5th grade English**

Alloy as Of iron and carbon sp

**math**

write the equation for a line in point-slope form and in slope-intercept form. parallel to 3x-4y=12 and passes through (8,3).

**MATH**

I HAVE A GARDEN THE WIDTH OF MY GARDEN IS 8FT LONGER THAN THE LENGHT OF IT ARUOUND THE GARDEN I HAVE A 4 FEET WIDE SIDEWALK. THE AREA OF THE SIDEWALK IS ABOUT 320 FEET SQUARE, WHAT ARE THE DIMENSIONS OF MY GARDEN

**biology**

which organ system contains the stomach

**8th Grade Algebra**

How come x^4/3 is a ploynomial, but 3/x^4 isn't?