# Posts by maggie

Total # Posts: 454

**Math**

A sample of 4 different calculators is randomly selected from a group containing 47 that are defective and 29 that have no defects. What is the probability that all four of the calculators selected are defective? Round to four decimal places.

**calculus**

Find the area of the region enclosed by the parametric equation x = t^3?3t y = 6t^2.

**Intro to Trig**

Which of the following best corresponds to the x-value where the function f(x)=cos x is a minimum in the interval x = [25,30]? A) 25.1 B)26.7 C)28.3 D)29.8 Can someone show me how to solve this step by step? Thanks :)

**Organic Chemistry**

If one gram of aspirin is dissolved in 100mL of water at 37 degrees celsius, how much aspirin will precipitate out of solution when it is cooled to 25 degrees celsius?

**english**

in the scarlet letter how was roger leaving hester for 7 years worse than what dimmesdale's sin

**Math (check answers)**

ultiple Choice 1. What is a reasonable distance between two cities? (1 point) 200 km ** 200 m 200 cm 200 mm 2. Which value correctly completes the statement? 6,501.5 km = ______ m (1 point) 6,501,500 ** 65,015 650,150,000 650.15 3. Find the perimeter of the rectangle with ...

**calculus**

Consider the series ? ? n=1 (13/10^n) Determine whether the series converges, and if it converges, determine its value. Converges (y/n):

**calculus**

Find the centroid (¯ x, ¯ y) of the region bounded by: y = 6x^2+7x, y = 0, x = 0, and x = 7

**calculus**

A circular swimming pool has a diameter of 20 meters, the sides are 3 meters high, and the depth of the water is 2.5 meters. The acceleration due to gravity is 9.8 m/s2 and the density of water is 1000 kg/m3. How much work is required to: (a) pump all of the water over the ...

**calculus**

A tank in the shape of an inverted right circular cone has height 10 meters and radius 16 meters. It is ?lled with 5 meters of hot chocolate. Find the work required to empty the tank by pumping the hot chocolate over the top of the tank. Note: the density of hot chocolate is...

**calculus**

A force of 4 pounds is required to hold a spring stretched 0.1 feet beyond its natural length. How much work (in foot-pounds) is done in stretching the spring from its natural length to 0.6 feet beyond its natural length?

**calculus**

A cable hangs between two poles of equal height and 40 feet apart. At a point on the ground directly under the cable and x feet from the point on the ground halfway between the poles the height of the cable in feet is h(x) = 10+(0.1)*(x^1.5). The cable weighs 19.2 pounds per ...

**calculus**

Find the volume of the solid obtained by rotating the region bounded by the curves y = x^8, y = 1 about the line y = 5.

**calculus**

Find the volume of the solid obtained by rotating the region bounded by the given curves about the speci?ed axis. y = 64x?8x^2, y = 0; about the y-axis.

**calculus**

Find the volume of the solid obtained by rotating the region bounded by the given curves about the speci?ed line. x = 1?y^4, x = 0; about x = 1.

**Math**

Thanks, Unknown! 100%

**math**

Give an example of an open interval, and an example of a set that is not an open interval. Use proper set notation and explain.

**Math**

I am between 40 and 50 and I have 17 ones. Who am I?

**math**

Use Simpson's Rule and all the data in the following table to estimate the value of the integral (with 7 at the bottom, 13 at the top) ydx. x 7 8 9 10 11 12 13 y -5 -2 6 7 8 0 -4

**math**

Find the equations of at least three lines that intersect each other at the point (6, -2).

**math**

In the card game “Match,” the loser has to double the money of the other players. Juan, Jamal and Joey are playing. First Juan loses and doubles the money of Jamal and Joey. Joey loses the next hand and doubles the money of Jamal and Juan. Jamal loses the next hand ...

**math**

Mrs. Smith was complaining about her teenagers drinking too much soda. Her three teens drank two cases of soda every five weeks. Mrs. Jones replied that her six teens go through five cases every four weeks. Who drinks more soda in a week on the average, one of Mrs. Smith&...

**math**

You are going to build a glass box. The length of the box is 8 inches more than the width and the height is half the length. The length of the wire to make the frame is 108 inches. 1.What are the dimensions of the box? 2.All six faces of the box will be panes of glass. What is...

**math**

Suppose n, a are integers. If n divides a, then n divides a^2.

**math**

Bill ran into his neighbor from across the hall and asked her how old her children were. She replied, “Let’s see if you can figure it out. The product of their ages is 72 and the sum of their ages is the same as my apartment number.” Bill thought for a while and...

**math**

San Pablo is having a festival. Tickets for children under 12 cost $2, adult tickets are $6 and senior citizen tickets are $3. One sixth of the tickets sold were children’s tickets. The 40 senior citizens with tickets sat in the shade under the trees and watched the ...

**math**

Mrs. Jones wants to go shopping so she asks her husband for some money. Being busy, he just tell her to take what she needs out of his wallet. She first stops and buys a coat which costs her half of her money plus $2. She then stops and buys a dress, which costs her half of ...

**math**

A family decides to grow flowers in their garden. They have 56 feet of fence they want to cut into two pieces to make two square gardens. How long should each piece be if they want the total area of the squares to be 100 square feet?

**History**

How did political machines maintain support of citizens?

**History**

Which captain of industry is known for believing that it was the responsibility of the wealthy to be charitable? Carneige Rockfeller Vanderbilt Pullman

**Math**

suppose a= {4,6,9,2,-3,-10} then (?x)v5=-5 how do you get that

**Algebra**

Amy bought 18 stamps. Some were for postcards and cost 35 cents. The others were for regular mail and cost 49 cents. She spent $7.28 on the stamps. How many of each did she buy?

**Chem: pH of acids and bases**

Calculate the concentrations of all species in a 0.320-M solution of H2X if K1 = 6.31E-06 and K2 = 3.71E-09 [H2X] = [H3O1+] = [HX1-] = [X2-] = Work: H2X + H2O --> HX- + H3O+ .320 M This is literally the only thing I know. How can there be two different Ks??

**Grammar**

Is the word "bring" a linking verb?

**math**

give a counterexample for the following conditional statement. If you live in West Virginia, then you live in Charleston.

**Physics**

A flowerpot falls from a windowsill 25.0 m above the sidewalk. A. How fast is the flowerpot moving when it strikes the ground?? B. How much time does a cat on the sidewalk below have to move out of the way before the flowerpot hits the ground? (Please answer with step by step ...

**Physics**

An arrow is shot straight up from the edge of a cliff with an initial velocity of 50 ft/s. Answer the following questions using English units. The acceleration due to gravity has a magnitude of 32.2 ft/s. A. Find the time to reach the highest point. (please use step by step ...

**Physics**

A robot probe drops a camera off of the rim of a 239 m high cliff on Mars, where the free-fall acceleration is -3.7 m/s^2. A. Find the time required for the camera to reach the ground. B. Find the velocity with which it hits the ground.( shown work will be appreciated)

**Physics**

Can someone answer this step by step please!!!

**Physics**

An arrow is shot straight up from the edge of a cliff with an initial velocity of 50 ft/s. Answer the following questions using English units. The acceleration due to gravity has a magnitude of 32.2 ft/s. A. Find the time to reach the highest point. B. Find the displacement at...

**Calculus**

Find dy/dx. e^(xy)=sin(x)

**calculus**

Campbell’s Soup Company requires that is its tomato soup containers have a capacity of 64 in^3 , have the shape of a circular cylinder, and be made of aluminum. Determine the radius and height of the container that requires the least amount of metal.

**calculus**

Suppose that an arrow was fired vertically upward from a crossbow at ground level and that it struck the ground 20 seconds later. If air resistance may be neglected, find the initial velocity of the bolt and the maxim altitude that it reached.

**Trigonometery**

Im sorry, I overreacted but yes. and Thanks

**Trigonometery**

If no one helps you,then whats the point in this website!

**Trigonometery**

What is the graph of one cycle of a sine curve with the given characteristics? Using the form y = a sin bÎ¸, what is an equation for the sine curve? amplitude = 4, period =1/4 pi , and a < 0

**Algebra 2**

Participants in a study of a new medication received either medication A or a placebo. Find P(placebo and improvement). You may find it helpful to make a tree diagram of the problem on a separate piece of paper. Of all those who participated in the study, 80% received ...

**life orientation**

What are the six suggestions on how to combat the violation of human rights

**7th Grade Math**

The experimental probability of hearing thunder on any given day in Ohio is 30%. Out of 600 days, on about how many days can Ohioans expect to hear thunder? Is my answer 420 days? I multiplied 600*.30=180, then I subtract 180 from 600 and got 420.

**LA**

Thank you Ms. Sue

**LA**

This is the passage Though zoos are meant to be a joy to viewers and teach lessons about our earth, the zoo jails its inhabitants and passes on faulty knowledge

**LA**

Read the passage. What technique is the author using to develop point of view? Though zoos are meant to be a joy to viewers and teach lessons about our earth, the zoo jails its inhabitants and passes on faulty knowledge A) State a claim B) Persuasive Language C) Supporting ...

**English**

1. What warning does prince escalus give the capulets and montagues? 2. What agreement do Paris and lord capulet reach? 3.why does Romeo go to the capulets part?

**Math**

Thank you

**Math**

Raquel's pay stub has three deductions. What is the total amount of deductions? Round to nearest cent. Gross Pay(wages) is $1625.35 Medicare is $22.48 Social Security is $52.72 Federal Withholding Income Tax (23%) Please show me how to work do this problem?

**Math**

Caleb's family room has the dimensions 5 1/4yd wide and 3 7/8yd long. he needs to find the area of the room so that he knows how much carpet to buy.

**Social Studies help**

It's Cod Fishing!

**Math**

the product of two consecutive positive even integers is 14 more than their sum .set up an equation that can be used to find the two numbers and solve it

**biology**

Which of the following organelles is common to both prokaryotic and eukaryotic cells?

**Science-physics**

A ball is thrown horizontally from the top of a building 37.5 m high. The ball strikes the ground at a point 80.3 m from the base of the building. The acceleration of gravity is 9.8 m/s 2 . Find the time the ball is in motion. Answer in units of s.

**college algebra**

Kiran drove from City A to City B, a distance of 242 mi. She increased her speed by 10 mi/h for the 351-mi trip from City B to City C. If the total trip took 12 h, what was her speed from City A to City B?

**Art please help!**

killjoy is right

**Science help**

I can't stand when people wanna leave hints like leave the answer not lectures and a lesson on how to do it. If she needed that she wouldn't be here right now.

**Geometry**

Are my geometry answers correct? Please help, I'd like to make sure before I hand this in. Name the property of equality each statement illustrates. 1.) If m∠2=m∠3 and m∠3=m∠1, then m∠2=m∠1. My answer:Transitive Property 2.) AC=AB+BC, ...

**math**

Natalie practices the piano everyday. On Monday she practiced for 10 minutes. If she practices everyday for 10 minutes, on which days of the week will she have practiced for 90 minutes? Explain.

**algebra**

How do I state which property of exponents justifies each step of this simplification?: 3^2x^6z^10/2^2y^18*x^4y^4z^4/5z^3*27z^6/2^2x^2y^3 Im really stuck on this problem, I've managed to figure out the first 5 problems but this one is troubling me.

**algebra**

How do I rewrite this equation using radicals instead of rational exponents? I rewrote the whole equation in simplest form 25x^(11/10)4√y How do I rewrite it with radical exponents?

**algebra**

Find a special factoring pattern for a difference of two sextics: (a^6-b^6).

**chemistry**

determine the concentration of NH3(aq) that is required to dissolve 775 mg of AgCl(s) in 100.0 mL of solution. The Ksp of AgCl is 1.77× 10–10.] please help!!!!!!!

**Chemistry**

A helium-filled balloon has a volume of 2.68 L at 15◦C. The volume of the balloon decreases to 2.33 L after it is placed outside on a cold day. What is the outside temperature in K? Answer in units of K.

**teacher aide**

lesson - 02604500 - helping abused children

**Art**

he said D stupid

**Math**

Determine the solution set of 2x-3y<6 4x + 4y < 8 | This sign should be Less than or equal to

**Physics**

A Ferris wheel 26.0m in diameter rotates once every 19.0s What is the ratio of a person's apparent weight to her real weight at the top and at the bottom? Please help! I know there are other questions similar to this but none of the answers are helping me, they are too ...

**Math Help**

Hello! Can someone please check and see if I did this right? Thanks! :) Directions: Find the exact solutions of the equation in the interval [0,2pi] cos2x+sinx=0 My answer: cos2x+sinx=cos^2x-sin^2x+sinx =1-sin^2x-sin^2x+sinx =-2sin^2x+sinx+1=0

**Chemistry**

What are the ppm of each of the atoms contained in a solution that is 655 ppm K3PO4?

**Social Studies help**

@Ms.Sue IS mean because, I have that same question in social studies which does not require a book. so before making accusations against her ask her if its for a book. I no longer seek Ms.Sues help because, of her poor attitude and lack of knowledge sometimes when it comes to ...

**Science Help!**

thanks @DrBob222

**science Help 911!!**

its A and C!!!!

**Science Help!**

which one is it??

**Science Help!**

shut up @DrBob222 this is sites purpose is to give answers and help out. Not to ask questions and criticize someone on why there on here. I'm gonna tell you something instead of asking you something: If you don't like people cheating get off of here. Please and Thank ...

**science help!!!!!!!!!**

c'mon @Ms.Sue your not helping

**Social Studies**

oh shut up @yourmom at least she gives up her time in a day to help you out because, you don't know anything.

**Social Studies**

This sight is for people looking for answers to questions regardless if you think there "cheating" if you don't agree with cheating get off this sight and go on with your business but, if your here to help, help! Don't ask if there "cheating" or ...

**Social Studies**

@Ms.Sue when someone gets an answer wrong DO NOT say 'I disagree with that answer' just give the answer say 'oh no the answer for number 6 isn't __ its __' that helps

**8th grade English/Language Arts**

ugh I need the answer to #3. helllppp!!!!

**Language Arts**

I know @lololol I was going to ask the same thing

**Language Arts**

actually @camster was right. I used his answers and got 100%

**Physics Help Please!!!! Check!**

Earth -

**science help**

Thanks for the help guys :)

**Math**

A family size pizza is 24$ and costs 3 times as much as a small pizza. How much does the small pizza cost?

**Englishm**

Write two paragraphs about how social media has changed the way you think about written communication.

**English**

Can anyone delete this

**CORRECTIONAL PRACTICE AND POLICY**

So is it B?

**CORRECTIONAL PRACTICE AND POLICY**

This person, sentenced to life with little hope of parole, could live many years in the prisons of America and whose physical or mental disabilities require more extensive medical and treatment care. A. Infectious offender B. Developmentally challenged offender C. Sex offender...

**Biochemistry**

10.275

**mathematics**

One hydrant can fill a truck in 12 minutes, another in 6 minutes . If they are both turned on together how long would the truck take to be filled? 12+6= 18\2= 9 minutes

**mathematics**

Use the definition of limits to show that Lim x➡ 0 : (x^2 - 9) / (x + 3) = -6 hence find the number d > 0 given that e=0.05

**Science**

why are we see awsome