# Posts by marty

Total # Posts: 125

**calculus**

aren't you supposed to plug everything in AFTER you derive it?

**calculus**

If you are blowing up a balloon at a rate of 3 cubic ft per min, what is the rate of change of the radius after 30 seconds

**Math**

A walking area around a pool is going to be frfinished with a nonslip surface. If it costs $17 per square foot to install what is the total cost? Inner rectangle is length 20 ft by width 10 ft. Outer dimensions of walkway are 14 length by 10ft. I have no idea how to set up ...

**Social Studies**

answers b,d 100% connexus

**Math**

Betty is supposed to work the same number of hours each week. One week, she worked 42 hours the first week and 34 hours the second week, how many hours is Betty supposed to work?

**Physics**

A block M1 of mass 20.0 kg sits on top of a larger block M2 of mass 30.0 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.415. The kinetic friction coefficient between the lower block and the flat surface is 0.115. A ...

**Physics**

A model rocket is launched straight upward with an initial speed of 46.4 m/s. It accelerates with a constant upward acceleration of 2.18 m/s2 until its engines stop at an altitude of 138 m. What is the maximum height reached by the rocket? How long after lift off does the ...

**Physics**

An airplane has a takeoff speed of 66m/s. Assuming a constant acceleration of 1.62m/s^2, how long is the plane accelerating down the runway?

**math**

Jeff is replacing the tile on his floor. he pans to use square tiles that are 11 inches on a side. the floor is 8 feet long and 6 feet wide. cabinet in the middle of the floor that will not need tile. this space is 2 feet wide and 3 feet long. estimate how many title will be used

**Math**

Mandy got 22 questions correct on her test. Her grade was 80%. How many questions were on the test.

**math**

(1,0) (3,4) (5,8) (7,12) what would be the output value when the input value is 12?

**LOGS (ALGEBRA)**

FIND THE INVERSE: f(x) = 10^(5x+3) - 10 f^-1(x) =

**statistics**

The mean score for all individuals who took the Law School Admission Test (LSAT) in 2010 was 155 and the standard deviation was 7. 9. What is the z score for a person, who received an LSAT score of 167? a. +1.71 b. +1.64 c. +1.74 d. -1.71 10.What is the raw score for a person ...

**Acct**

One of the companies for which you provide accounting services offers office cleaning services and has 8 customers. Cleaning services are provided in the evenings, Sunday through Thursday, at a rate of $30 per day. Billing is done every Friday. During the month, revenue is ...

**math**

factor 8x^3-8x=0

**Physics need help now**

A daredevil is dead set on jumping the Grand Canyon at its narrowest point (180 meters across). He has set up a ramp at 25 degrees and the ramp's release point is 20 meters above the rim of the canyon. He claims that his bike will be going 40m/s by the time he leaves the ...

**physics**

A daredevil is dead set on jumping the Grand Canyon at its narrowest point (180 meters across). He has set up a ramp at 25 degrees and the ramp's release point is 20 meters above the rim of the canyon. He claims that his bike will be going 40m/s by the time he leaves the ...

**physics**

A rocket ship at rest in space gives a short blast of its engine, firing 26 kg of exhaust gas out the back end with an average velocity of 182 m/s. What is the change in momentum of the rocket during this blast?

**statistics**

A residential treatment facility tests a new group therapy for patients with self destructive behaviors. To decrease scores of behaviors that has a mean in the overall population of 35 and a standard deviation of 4.7. The mean score for patients after new group therapy is 27. ...

**math**

x=7.5 y=18.5

**WAN**

Provide a hypothetical situation for each signal type that illustrates how it could be, or is being, used in a WAN. In what circumstance, for example, would a company choose to use a satellite signal

**math**

2 ounces

**equations**

3 dimes+1 nickle+2pennies=1quarter+1dime+?

**us history**

How did the automobile change America both geographically and socially?

**SCIENCE**

A PIPE FULL DIESEL HAS 5 PSI ON IT, AT 70 DEGREES AND ONE DEGREE OF CHANGE = WHAT PRESSURE

**american history**

I believe if I had an example of the arguments for and against I would be able to go from there.

**american history**

I need to present arguments for and against imperialism in the 19th century and state if it was UN-American or not.

**american history**

What did the Compromise of 1877 have to do with the end of Reconstruction?

**Health**

Write a 200- to 300-word response to the following: What is long-term care? Provide an example. What is continuum of care services in the United States? Why is long-term care one of the greatest challenges facing the health care delivery system today?

**Physics**

an electron in a mercury atom jumps from level a to level g by absorbing a single photon. determine the energy of the photon in joules.

**chemistry**

100 mL of water is already in the calorimeter. Use the density of water at 25°C (0.998 g/mL) to determine the mass

**chemistry**

100 mL of water is already in the calorimeter. Use the density of water at 25°C (0.998 g/mL) to determine the mass

**Tech math**

The sum of two numbers is 32. Ten more than half of the sum of the numbers is 26. What are the numbers?

**physics**

I don't quite understand

**physics**

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus? Hint: W = F*r F=kq1q2/r 2

**Nuclear Physics**

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus? Hint: W = F*r F=kq1q2/r 2

**accounting**

John's specialty store uses a perpetual inveentory system. the following are some inventory transaction for the month of may 2009. John's purchased merchandise on account for $5,000. FREIGHT CHARGE OF $300 WERE PAID IN CASH. JOHN'S RETURNED SOME OF THE MERCHANDISE ...

**medical coding and billing**

discuss coding or obstetrics, including items covered by the global fee for antepartum and pospartum periods of normal pregnancy

**mat116**

G(z)=4z+2 how to work this

**computers**

hl=en&lr=&as_qdr=all&ei=pAQqTJXuBsP38AaSnPTRCA&q=how+does+an+information+system+work+what+are+its+people+organizational+and+technological+components+List+and+describe+the+people+organizational+and+technological+components&start=10

**algorithms and logic**

i need an example of a peer review of the currency conversion test procedure exercises

**Cultural Diversity**

if some one made the following statement Asian americans and pacific islander belong to a single -asian American culture, how would you explain that the statement is a misconception? include whether you think ,most americans believe this misconceptions and why or why not.

**Cultural Diversity**

if someone made the following statement asian americans and Pacific Islanders are a model minority, how would you explain that the statements are misconceptions and why or why not. include whether you think most americans believe these mixconceptions, and why or why not.

**algebra**

7r-3s=18 3r+7s=16 Solve by the elimination method, please.

**cultural diversity**

2-3 consequence situations that are associated with group known as native americans.

**algebra**

solve the equation for x 1 + 1 = 1 - - - x 12 8

**Algebra**

Factor completely 6a-9a^2

**algebra**

Perform and give answer in simplified form Find the product (2x-5)^2

**12th grade A.P. Economics**

Functioning labor unions

**math**

why is it necessary to find the gcf of two or more numbers

**havelock high**

An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT? A) a ball striking a wall, in which the force of the ball on the wall is ...

**5th grade math**

A radius and a diameter both have to ___________.

**Calculus**

Find the volume of the cone of maximum value that can be inscribed in a sphere of radius 10cm.

**Calculus**

An indoor physical fitness room consists of a rectangular region with a semicircle on each end. The perimeter of the room is to be a 200m running track. Find the dimension that will make the area of the rectangular as large as possible.

**8th grade**

Need weight of Iron vs magnesiium

**Math word problem**

The cost of producing x bags of pretzels is modelled by C(x)=0.5x^2 + x + 2 where x=# of bags per hundred. State the function that represents the average cost.

**Math (Functions)**

he cost of producing x bags of pretzels is modelled by C(x)=0.5x^2 + x + 2 where x=# of bags per hundred. State the function that represents the average cost. Do you just have to factor it?

**Calculus questions..really need help, please!**

woops i mean this........ the answer to this question is..... OMG KID THAT IS HARD, WHAT GRADE R U IN

**Calculus questions..really need help, please!**

the answer to this question is OMG THAT ISHARD JESE KID WAT GARDE R U IN

**Psychology**

Describe other measurements sociologists use to calculate prejudice.

**Com 220**

Actually it is called the SQ3R method, my bad.

**Com 220**

Read, Recite, Review! It always works.

**health help please!!**

Thank you

**health help please!!**

socialization process of caregivers. what are the implications for patients?

**Physics**

Two identical charges are 36 mm apart. The electrostatic force between them is 1.3 N. What is the size of each charge?

**Physics**

A student photographs a 18cm flower so it fills half of a 24mm slide. What is the magnification?

**Physics**

The first and second resonant lengths of an air column that is closed at one end are 15.5 cm and 45.5 cm, respectively. What is the best value for the wavelength?

**Physics**

If the third harmonic of a standing wave in a vibrating string is 600 Hz, what is the fundamental frequency?

**Physics**

At a height of 3.00 m above the ground, a 0.500-kg ball is thrown with an initial speed of 30.0 m/s in an arc from point A to point C. When the ball is 6.00 m above the ground travelling upward, what is the speed of the ball?

**Physics**

Calculate the work done by planet X on its moon. Planet X applies a force of 5.6 x 10^10 N on its moon and the moon is 4.0 x 10^8 km away from the planet and it continues to circle the planet in a circular orbit of circumference of 2.5 x 10^9 m.

**math**

2/6 of the insects were centipedes. 1/2 were millipedes, 12 were flies. How many insects were there? Please explain.

**Maths**

Thanks

**Maths**

the interest charge would be 11.96*36 = $3833.60 a difference of 76 cents Hi how did you get the 3833.6 from multiplying 11.96*36. Thanks

**Maths**

In order to make some home improvements, a home owner spent $40,000. He paid 20% as a down payment and financed the balance of the purchase with a 36-month fixed installment loan with an APR of 7.5%. Determine the home owner’s a) total finance charge and b) monthly ...

**Physics**

If you weighed 112 N on the Moon where g=1.6N/kg, how much would you weigh on Earth?

**physics**

How much would a 60-kg person weight on the Moon where the gravitational field has a magnitude of 1.6 N/kg?

**Physics**

A 2500kg car is travelling due west at 30m/s when the brakes are applied, exerting a force of 5000 N [E]. What is the car's acceleration due to the braking?

**advanced math**

The proper form would be -x^2 +2x -1. You could also put it as x^2 -2x -1. Either way they will both factor the same. Just make sure its in standard form (ax^2 +bx +c)

**Physics**

The applied force of a 2.0-kg object is 8.4 N [E] and the friction is 2.2 N [W]. What is the motion of the object? Can I use the formula Fnet = ma?

**economics**

What changes if any to the current condition of these tools would you make at the next meeting of the Federal Reserve Explain why and the benefitsdrawbacks of this strategy

**accelerated math**

i woudn't know the answer to this ? but i would think there is

**accelerated math**

is there a ruler thhat is just made for fractions like 1/8ths and lower

**math mesurment**

i do not ahve a clue but then again im only in 7th grade

**Chemistry**

What are some factors that affect the solubility of ionic substances?

**Chemistry**

what are the units of 100 and 40?

**Chemistry**

on the x axis is temperature (degrees celsius) and on the y axis is solubility (g/100g H20). Is there any mathematical way to figure this out instead of using the solubility curve.

**Chemistry**

Would a solubility curve help?

**Chemistry**

At what temperatures can 40mL of water dissolve the follownig quantities of potassium nitrate? (a) 35.0g (b) 20.0g can anyone start me off with a formula or a hint?

**Chemistry**

I'm trying to find if potassium nitrate is polar or non-polar by using the electronegativity scale. Can someone check my work? Electronegativity: potassium: 0.82 nitrogen: 3.04 oxygen: 3.44 =3.44-3.04 =0.82-0.4 =0.4 =0.42 So the final answer is 0.42 and by looking at the ...

**Chemistry**

Could you explain your "like dissolves like" statement?

**Chemistry**

Would this be a correct general statement about the type of solute dissolves in non-polar solvents: Compounds that are non-polar will dissolve in non-polar solvents. Do you have any tips on how I could elaborate on this?

**Chemistry**

1. Water is a polar molecule. Therefore, it acts as a polar sollvent. a) Think about the following compounds: iodine, cobalt (II) chloride and sucrose (C12H22O11). Which compounds are soluble in water. b) Assume that the interaction between solutes and solvents that you ...

**Chemistry**

That helps! Thanks!

**Chemistry**

6ClO2 + 3H2O -> 5HClO3 + HCl a) If 71g of ClO2 is mixed with 19g of water, what is the limiting reactant? b) What mass of HClO3 is expected in part (a)? c) How many molecules of HCl are expected in part (a)? I completed part a and b but got stuck on part c. Help!

**Chemistry**

So I calculated the mass of MgSO4 (120.37g/mol) and the mass of 7H2O (126.14g/mol). Then I divided the mass of MgSO4 by MgSO4 . 7H20 multiplied by 100%. My answer was 95.426%. But how do I get the amount of magnesium?

**Chemistry**

What would be the mass of a bag of anhydrous magnesium sulfate, MgSO4, if it contained the same amount of magnesium as a 1.00kg bag of Epsom Salts, MgSO4 . 7H2O?

**Chemistry**

Got it! Thanks

**Chemistry**

Could you explain the steps you did for the first part? Do I multiply 3.49 x 10^23 by the mass of H2O?

**Chemistry**

How many atoms of H are in a mixture of 3.49 x 10^23 molecules of H2O and 78.1g of CH3OH?

**Chemistry re-post URGENT**

Awesome! Thanks