# Posts by :)

Total # Posts: 285

**calculus**

A rectangle has a perimeter of 10 meters. Express the area A of the rectangle as function of the width x.

**relaited rates**

thank you. :) you really did a big help. Godbless

**relaited rates**

uhm, just one more thing. Isn't it 5/144π ? :)

**relaited rates**

thank you so much! :)

**relaited rates**

A spherical balloon is being inflated so that its volume is increasing at the rate of 5 cubic meter per minute.At what rate is the radius increasing when the radius is 6 meters?

**Related rates**

thank you so much. :) you really help me a lot. Godbless!

**Related rates**

I'm very thankful for being kind to me. Last one thing, 8 meters is the height of the conical pile. Does it also mean that it is the same as the height of the sand?

**Related rates**

Thank you for answering my question. I just can't understand how it come up to the equation 10=2Π(64)dr/dt. I will be very thankful if you elaborate. :)

**Related rates**

Sand is being dropped at the rate of 10 cubic meter per minute onto a conical pile. If the height of the pile is always twice the base radius, at what rate is the height increasing when the pile is 8 meters high?

**6th Grade Christian History**

Elsa, its for help, not cheating. People ask for Ms. Sue or someone else to check their answers. That's that.

**english 11**

DBDBD. Just took the same quiz.

**6th Grade History**

i think your right with that answer

**Trigonometry**

Find the angle of elevation of the sun when a tree that is 10 yd tall cast a shadow 14 yds long

**Trigonometry**

A lookout spots a fire from a 36 meter tower the angel of depression from the tower to the fire is 21 degrees . To the nearest meter how far is the fire from the base of the tower

**Trigonometry**

an airplane over the pacific sights an atoll at a 11 degrees angel angle of depression. if the plane is 410 m above water how many kilometers is it from a point 410 m above the atoll

**Trigonometry**

a 30 feet ladder resting against a building makes a 60 angle with the ground . find the Height from the ground at which the ladder touches the building to the nearest foot

**Trigonometry**

Liola drives 13 km up a hill that is at a grade of 10 Degrees what horizontal distance to the nearest tenth of kilometer has she covered

**Trigonometry**

A side 2.8m long makes an angle of 25 degrees with the ground how high is the top of the slide above the ground .

**gemotry**

On a sunny day object A has a shadow of length 3 meters and a meter stick has a shadow 1.5 meters while object b has a shadow of length 6 meters how tall is object A AND B

**geometry**

Marc is visiting washington dc he wants to know the height of the washington monument the length of the monument shadow is 111 feet long at the same time that marcs shadow is 1 foot long Marc is 5 feet tall using this data find the height of the monument

**Medical Coding 2**

FINAL TAKE 882.0 890.0 881.0 12042 12004 E000.8 E001.1 E849.0 E888.0 E920.9

**Medical Coding 2**

FOR 2ND CPT 12002 CPT 12004

**Medical Coding 2**

for 2nd E001.1 E849.0 E888.0 E920.9

**Calculus (Parts A and B done, just help with C)**

Given: dr/dt = 0.05 m/s V = 4/3 πr³ dV/dt = 4πr² (dr/dt) A = 4πr² dA/dt = 8πr (dr/dt) - - - - - - - - - - - - - - - First question: What is dV/dt when r = 12? dV/dt = 4π(12 m)² (0.05 m/s) dV/dt = 28.8π m³/s dV/dt ≈ ...

**Calculus (Parts A and B done, just help with C)**

dr/dt = .05 v = (4/3)pi r^3 dv/dt = (4/3)pi(3) r ^2 (dr/dt) <---- this step is where the mistake was. you needed to have differentiated the volume with respect to time. to do this use the power rule on the right side. the derivative of (4/3)pi r^3 is (4/3)pi(3) r ^2 (dr/dt...

**Calculus ~ Related Rates**

-10/3

**Calculus**

Okay, letting x be height and b radius of smaller, then x/b=h/r, and volumeof smaller is 1/3pi(h-x)b^2, or 1/3pi(h-x)(x^2r^2/h^2= 1/3pi((x^2r^2/h)-(x^3r^2/h^2). Now differinate with respect to x, and set to 0, so ((2xr^2/h)-(3x^2r^2/h^2)=0, so you get x=2/3h. So, fraction is...

**Chemistry**

How many grams of CO are needed to react with an excess of Fe2O3 to produce 233.4 gFe? Fe2O3 (s) + 3CO (g) --> 3CO2 (g) + 2Fe (s)

**Chemistry**

If 26.4 L of H2 reacted with 13.2 L of O2 at STP, what is the volume of the gaseous water collected assuming that none of it condenses?

**geometry**

the ratio of the area of a smaller triangle to the area of a larger triangle is 1:4. if the are of the smaller triangle is 30, find the area of the larger triangle.

**MATH**

4*3*2*1*3 there are 4 possibilities for the first space... so u only have 3 options for the fifth spot because 1 car has already parked... now since two cars have parked in the first and last spots you have 3 cars out of the five that can still park.. so 3 can park in the ...

**english**

A. communist B. guerillas C. Marxist

**English-cry the beloved country**

An example I believe is for those who love and don’t seek power would be James Jarvis. Rather than seeking power he goes on and helps the villagers, at first he begins with donating ilk but then his rating with help goes higher and higher, not to mention the amount of ...

**math**

Thanks helped a lot

**math**

_ _ < 50 12 and 24 It's mental math.

**physics**

A 0.46 kg object connected to a light spring with a spring constant of 18.0 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. unit = cm/s (b) Determine the speed of the mass...

**Science**

How do you reverse the expirement of a Iron Nail which is placed into a cup of Copper Sulfate????

**Physics**

1 Hz

**HiSTORY ....helpppppp**

YEllow journalism was important because it was a business move for the newspapers. By makiing the war more exaggerated in the media, it sold more newspapaers.

**physics**

Figure 6-43 shows a "conical pendulum", in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.060 kg, the string has length L = 0.90 m ...

**physics**

F/2

**history**

Im on my school laptop and its not letting me get through to the links.

**history**

how do you think the Emancipation proclamation will affect people’s attitudes towards the war?

**1st grade**

a flip flop?

**Physics**

HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHHAHHAHAHA

**Grade 9 science: ecology**

They share cellular respiration but dint share photosynthesis

**algebra**

find algebraically the equation of the axis of symmetry and the coordinates of the vertex of the parabola whose equation is y=-2x^2-8x+3. explain the steps please. :)

**algebra**

(1) x^2 (2) x^9 (3) 4x^2 (4) 4x^9

**algebra**

in simplest form?

**algebra**

what expression represents (2x^3)(8x^5)/4x^6?

**science!!**

The element in an incandescent light bulb that releases light energy is _____. I think its C a thin tungsten filament. Am i right? below are the choices: A.a phosphor B.mercury vapor C.a thin tungsten filament D.a thick tungsten filament

**math**

I think its 63 miles per hour. How i got it: 12 hrs. minus 7 hrs. = 5hrs for the return trip. 45*7= r*5 315==r*5 315/5 = 63 miles per hour (i think that 63 is the answer. im not sure)

**science**

Hi it's me again. I realize that my last question didn't make much sense, so I will try to explain it again. Her it goes..... A long time ago the Mayans predicted that it took so many days( years even) for the sun to orbit the jupiter. This was without any sort of ...

**science**

I remember hearing something about how the Mayans predicted that it took so many days for the sun to orbit the sun and then Nasa recently figure out that they were only slightly off. Does anyone know about this? Thanks

**PLZ HELP!!!! communication**

THE ANSWER IS; False of course! :) Selective listening DOES focus on the most important parts of a message, but it isn't always effective!

**home economics**

macro nutrients = protiens,fat micro nutrients =minerals & vitamins

**algebra**

x(-2x-8) uqh help ! i fiqured it would just be -2x-8x but nopee

**math**

he came out wet

**displacement...**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...

**science**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...

**science**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...

**algebra**

2.

**word.**

What are the three sections of the Mail Merge Helper dialog box?

**science**

At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate ...

**word.**

thanks(:

**word.**

What are the steps in creating a drop cap two lines tall?

**science**

A sailboat sails west from port for 5.3 km and experiences a shift in the wind direction. The wind blows the sailboat 2.5 km south. What is its displacement from its original position? a^2+b^2=c^2 5.3^2+2.5^2=5.86^2 I just cant figure out the direction...

**Healthcare**

People on this website are so mean to each other wow.I thought it was to help not to fight about who can and cannot read a text book. Some like myself sometimes have a harder time understanding the text because you do not have a person in front of you explaining everything. ...

**PRE*******ALGEBRA**

the answer is the answer.

**5th grade math**

lol nice 1 madison

**5th grade math**

when ur subtracting you kinda just add lol i hate this too madison!

**7th grade**

yeaaahhh what she saiddd lol

**maths plz help me**

you add the numbers next to x and multiply 5×360 so it will be : x + 1450 = 1800 subtract both sides x + 1450 - 1450 = 1800 - 1450 x = 350 :)

**Physics**

Square root.

**algebra**

yo momma foooollllll.

**drivers ed**

haha nevermind ill find it out tomorrow........mine isn't that important

**drivers ed**

i have been working on this forever...and i cant figure it out...but its on motorcycle safety...and its two words...but it contains aeehhossvy...and ithink its an article of clothing but other than that i have no idea......cause everything else i've solved has been clothing

**Math(Geometry)**

number 15 is money... george 1 dollar bill, thomas 5 dollar bill, abe 10 dollar bill, alexander 20 dollar bill, then is andrew jackson 50 dollar bill, and then ulysses grant 100 dollar bill

**math**

A chemist has 80 pints of a 20% iodine solution. How many pints of iodine must be added to produce a solution that is 33.1/3% iodine? Please help me work this through Let X be the number of pints of iodine that must be added. You start out with a mix that contains 16 pints of ...

**math**

How do you solve these types of problems? What is the remainder when 732^500 is divided by 10? The remainder of a division problem is the same as its modulo. 732^500 % 10 = the remainder what is modulo? and what do I need to do to solve this?

**math**

The population of Norson, the largest city in Transitania, is 50% of the rest of the population of Transitania. The population of Norson is what percent of the entire population of Transitania? Assume there are 100 people in Transitania.

**math**

12/7 .......i think

**the big idea of energy**

The idea is that the molecules have a lot of heat energy and so they are banging into eachother and if they bang with enough energy they join together.... hope this helped!!! :)

**microeconomics**

we also have the same problem...

**Chemistry Suspension Examples...**

hydrate