# Posts by mark

Total # Posts: 1,623

**Math**

I think in simple terms you are removing the parenthesis, so you need to multiply 4 by each one inside the parenthesis, 4x9=36, and 4x-m=-4m so I believe tat "D" sis the answer.

**calculus**

Find the volume of the solid whose base is the region bounded between the curve y=sec x and the x-axis from x=pi/4 to x=pi/3 and whose cross sections taken perpendicular to the x-axis are squares.

**alegebra**

c = number of correct answers Amelia gets 4 points for each correct answer so... 4c = how many points she gets from answering correctly Points deducted = 1(25-c) 25 is number of questions Therefore... 4c-1(25-c)=50

**physics**

Thanks

**physics**

If a masss of 65kg is dropped 4.3m onto a spring with a stiffness coefficient of 6.2x10^4 n/m, how far is the spring depressed?

**physics**

A 65 kg object is dropped from rest a distance of 4.3m onto a spring with a stiffness coefficient of 6.2x10^4n/m. How far is the spring compressed?

**math**

If the base to a gutter and 12 feet from the base of a house, how many feet high on the house does the ladder reachIf th

**physics**

Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?

**physics**

Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?

**physics**

2 objects are .25m apart and exert a force of 2.5x10^-10 N on each other. Thier total mass is 4 kg. what is the mass of each?

**Physics**

I used my last attempt at the problem using this info, but was unable to figure out the answer. Thank you for responding though.

**Physics**

Can't figure this one out. "In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed from rest through a distance of 0.88 m by the horizontal 25 N force from the ...

**reading**

If a person lives over 160 years What will happen?

**reading**

What will be the impact on society if people live more than life expectancy?

**reading**

can you please answer my other questions?

**reading**

What is the advantage or disadvantage that people used telomere?

**reading**

thank you

**reading**

What will be the impact on society If people live more then life expectaney?

**math**

which is matches the problem? <,>,= 8.5_____-10^3

**physics**

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building with ...

**Math**

Theresa's company just bought 18 new computers. She was told that there would be a random drawing to see which employees got one of the new computers. If Theresa has 46 coworkers, what is the probability that she will get one of the new computers?

**toxicology**

a) Generally speaking, the ability of a substance to move across a membrane by passive diffusion is enhanced by decreasing size and by an increasing octanol/water coefficient. T or F

**geometry**

Assume there are 2 similar polygons, whose scale factor is 4:5. If the larger polygon has an area of 30 units squared, what is the area o the smaller polygon?

**COM/155**

I will try later.....thank you

**COM/155**

none of my bold or underlined words showed up....

**COM/155**

For this assignment, I have reviewed the amazingly racy MTV reality series called Jersey Shore. The show follows the lives of eight savagely stylish young Italian-Americans at the Jersey Shore. During the day, the cast shares shifts working at a competitively busy boardwalk t-...

**COM/155**

My assignment is to write a television show review. I am to Bold adverbs, and underline adjectives. I think I found them all, what do you think?

**spelling**

what word ends in -let and has the same meaning as starlet?

**english**

when do you use present perfect?

**groundwater science**

Assume that a gaining stream exists in physical connection with groundwater in an unconfined aquifer. Assume that several contour lines of equal head cross the stream and intercept it. True or False: Since the stream is gaining, the contour lines of equal head will increase in...

**COM/155**

Thank you for your help. Have a good night.

**COM/155**

me, her, my, who, they. Am I correct?

**COM/155**

•Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. •Use at least 5 different pronouns. I think these sentences are correct. They should include the necessary five diferent pronouns. What do ...

**chemistry**

Just figured this out for my Chemistry class. .86 / (23 + 34.45) = X / (39 + 34.45) Solve for X ( .86 / (23 + 34.45) ) * (39 + 34.45) 1.099 = X X =

**Physics**

A crate of a mass 150 kg is lifted onto a truck 2.5 m above the ground. How much potential energy has the crate gained?

**com/155**

Thanks again!

**com/155**

My assignment is to write a paragraph about what I've learned this week. It should contain clear and concise sentences, with correct spelling and puncuation. How do you think I did? This Weeks Material Has Changed The Way I Write This weeks material has opened my eyes to ...

**COM/155**

Thank you so much! Have a great night.

**COM/155**

also.....the puncuation also has to be correct.

**COM/155**

For this project, I had to write 5 clear, concise, well written sentences about what I've learned this week. Do these sentences look correct to you? One of the most important lessons I have learned is to stay away from using vague or inappropriate words in my writing. I ...

**Physics**

In an arcade game, a ball is launched from the corner of a smooth inclined plane. The inclined plane makes a 33.3° angle with the horizontal and has a width of w = 42.9 cm. The spring-loaded launcher makes an angle of 45.0° with the lower edge of the inclined plane. ...

**COM155**

Thank you for your help! Have a great day.

**COM155**

Ok.....How is this? Identify those with errors by marking each of the errors in bold. Make the correction in parentheses after the error. For those that are correct, write correct at the end of the sentence. Their (There) are three kids in the room. We have been married for 20...

**COM155**

I think I found all of the errors, what do you think? Identify those with errors by marking each of the errors in bold. Make the correction in parentheses after the error. For those that are correct, write correct at the end of the sentence. Their (There) are three kids in the...

**math**

A manufacturer can produce 8,500 units for a total profit of 47,600.00 dollars, but if he increases his production to 11,500 units, then his profit becomes $65,600.00. fixed cost is? net profit per unit produced is?

**Math**

I got that far. But I still do not know how to find the fixed cost and net profit from the p(x) equation.

**Math**

A manufacturer can produce 8,500 units for a total profit of 47,600.00 dollars, but if he increases his production to 11,500 units, then his profit becomes $65,600.00. It follows that his fixed cost is? and his net profit per unit produced is?

**Math**

Thank you so much!

**Math**

So it would be 2 as well correct? Sorry, this is all new for me.

**Math**

If the slope of line f is 2,and a line d is parallel to the line f, what is the slope of line d?

**Math**

A model car is made to a scale of 2 to 25. If the model is 17 inches long, how long is the actual car?

**physics**

im trying to figure out this same problem!!!

**finanace**

Using 7.86 rate of return , what should be the current share price of AirJet Best Parts, Inc. if the company maintains a constant 1% growth rate in dividends and the most recent dividend per share paid on the stock was $1.50?

**Chemistry**

In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B 2A ---> 3B How many molecules of substance B are produced when 27.9 g of substance A reacts? the molar mass of substance A is 24.7 g/mol STEP 1: convert the mass of A to moles...

**Math**

I am a little confused, can someone please help me? I the radius of a circle is 5m, what is the area of the circle? Is this the same as the surface area and it would be 10m?

**math**

;5$$5=1 qui weep

**Social Studies**

Which of the following is not a means by which cultures became diffused?

**Social Studies**

Compare and contrast how Islam spread with how christianity spread.

**math**

The support wire for a sign meets the wall and the overhang as shown below. If m<2=42 degrees, find m<1. Explain your reasoning.

**psychology**

hi im stuck on a question on my assignment, question , sometimes when going to meet jamie , karen mistakes someone else for him , her motivation and expectations of seeing him effect her perceptions, could you direct me to one study illustrating either of these factors, and ...

**Math**

A cube is both a polyhedron and a prism. This isn't true right?

**Chemistry**

A 5.00-gram sample of glucose, C6H12O6, [molar mass = 180.] is dissolved 10.0 grams of water What is the molality of the glucose solution? Calculate the boiling(BP) and freezing points(FP) of this solution to the nearest 0.1 C°. The vapor pressure of pure water at 30º...

**math**

Sparky weighs 3/4 of her weight, plus 3/4 of a pound. How much does she weigh?

**9th grade algebra**

two volumes one is 8 the other 125, the surface are is 4, what is the other surface area

**Math**

make up alist of data with the following landmarks 15, 5,10,20

**Chemistry**

When 2.50g of an unknown solute is dissolved in 40.0g of ethanol the solution boils at 79.4C. The normal boiling point of this substance is 78.4C and it has a kb of 1.22C/m. (a) What is the molality of this solution? (b) What is the molecular weight of the solute?

**Language**

Which would be correct? They or Them and I are buying some groceries. Would it be They?

**statistics**

what is the sample space for this experiment: select two cards from a deck of 52 cards and observe the color of each card drawn.

**java**

I hava a Employee class and my main class. But in my netbeans it is saying that cannot find symbol symbol:class Employees location:class Main Why is this?And what should I do? Please send me a detail answer. I will really thankful for all of you.

**math**

how do i design a portable barrier to stop a vehicle travelling at 60km/h, weighing 1800kg within a distance of 1m? the tires cannot be damaged.

**college algebra**

Compute x +y, given the linear system with T # 1 and with the ordered pair (x,y) as solution x + 2y=3 Tx + ( T+1)y = T + 2

**math**

You are forming 3 teams from 25 people. Team A has 8 Team B has 3 Team C has 14 How many ways can team A be selected? How many ways can team B selected from the remaining people? How many ways can team C be selected from the remaining people? How many ways can all teams be ...

**math**

2 1/4 double

**College Chemistry**

48.70 mL of an HCl stock solution was transferred into a 500 mL volumetric flask and filled to the mark. 47.67 mL of the diluted solution was titrated with 0.179 M NaOH and found to have the concentration of 0.885 M. What is the concentration of the stock solution?

**Geometry**

The area of a triangle is 6.75 m squared. If the base of the triangle is 3 m, what is the height of the triangle?

**algebra**

24.084

**Math**

21%

**french, english**

yah i do. I just don't understand it. can you explain???

**french, english**

this is a french fable that I translated but I don't really undersand it. It is called the lion and the hunter... A braggart, lover of hunting, Just lost a dog of good breed, He suspected the body of a lion, Saw a shepherd: "Teach me, please, My thief, he said, the ...

**Physics**

A 0.2 kg object that stretches a spring 6.5 cm from its natural length when hanging at rest oscillates with an amplitude of 1.5 cm. The acceleration of gravity is 9.81 m/s2. Find the total energy of the system.

**U.S. History**

Describe the policies of our government regarding immigration during the first 100 years of U.S. history.

**Math**

Tina had no money until she received her pay from her boss. Afterward, she spent 7.50 dollars on food every day from Monday through friday. She spent 30 dollars on clothes and 25 dollars to repair her bike. If she had 40.50 left over what would be a expression to find the ...

**Math**

Andy and Cathy run for class president. There were 598 votes but 36 of the votes were with drawn. How would I write an equation that could be use to find n the number of votes that represent a tie?

**Science**

Does blood bring cell things like oxygen and digested food?

**Science**

Does blood bring cell things like oxygen and digested food?

**Science**

Does blood bring cell things like oxygen and digested food?

**Science**

Does blood bring cell things like oxygen and digested food?

**AP Chemistry**

You did not completely vaporize the liquid when you heated it. Is that incorrectly high, incorrectly low, or unaffected by the following procedural changes?

**physics**

Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = -w2) and the surfaces are ...

**eng 155**

i found in this order from top to bottom really, rapidly, slowly, firmly, badly, loudly, shamelessly, wildly, can't. and i think i am missing one, sorry if i am to late

**physics**

Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = -w2) and the surfaces are ...

**Physics**

Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = -w2) and the surfaces are ...

**geometry**

28

**Biology**

During the cell cycle, when does mitosis occur?

**physics**

Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg/m^3) of radius 120 km and height 4.5 km. Make a crude estimate of the ...

**PHYSICS ---HELP!**

I keep getting 0.68 ?????

**math**

Obtain the Taylor series in powers of x + 1 for f(x) = x/(2 + x), giving the general term and the interval of convergence.

**chem**

5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL?

**math**

try... value = low + ((high - low)(x%))

**math**

high=10 low=5 value=8 what is the formula to identify where 'value' is relative to the high and low (range)