Saturday

January 21, 2017
Total # Posts: 75

**algebra**

The doubling period of a baterial population is 20 20 minutes. At time t = 80 t=80 minutes, the baterial population was 50000. What was the initial population at time t = 0 t=0 ?

*October 30, 2016*

**word**

the merge process involves which two types o files

*August 23, 2016*

**Math**

Sanjay takes a pre-ap multiple choice test of 25 questions in which he earns 10 points for every correct answer, but loses 2 points for every incorrect answer. Sanjay answered all 25 questions and scored 202 points. How many did he answer correctly? how many did he answer ...

*May 19, 2016*

**Life orientation**

fraud and corruption

*April 27, 2016*

**Geometry**

I have a model of a triangle shaped pyramid with sides 6cm base 8cm and height 7cm. If I enlarge the pyramid using a scale factor of 1.2, what will the new perimeter and area be?

*April 11, 2016*

**Geometry**

There is a triangle shaped pyramid with sides 6 cm base 8 cm and height 7cm. If I enlarge it using scale ratio of 1.2. What is the new perimeter and area of the new triangle pyramid? Please help. Thank you

*April 11, 2016*

**Math**

Seth currently has $160 in his account and he deposit eight dollars in it every week. Keira has $270 in her bank account and withdraws three dollars from it every week. Write a equation to determine the number of weeks it would take seth and Keira to have the same amount of ...

*December 22, 2015*

**Math**

Tell whether the sequence is geometric. If it is, find the common ratio. 1.) 9, -6, 4, -8/3 2.) 16, 12, 8, 4

*April 21, 2015*

**Math Help**

Find a12 for the following geometric sequence. 1/32, 1/16, 1/8,

*April 21, 2015*

**algebra**

A graduated cylinder with a radius of 3 cm contains water to a height of 9 cm. Yann adds 15 steel balls, each with a diameter of 2.54 cm. What is the total volume of the contents in the cylinder after the balls are added? Use 3.14 to approximate pi and round your answer to one...

*March 5, 2015*

**science**

A geologist working in a national park finds a mineral. He is carrying a kit that contains a penny, a hand lens, a piece of tile, a geologic hammer, and a jackknife. Describe how the geologist can use these items to determine some of the mineral’s characteristics.

*November 12, 2014*

**Physics**

A car is traveling up a hill that is inclined at an angle θ above the horizontal. Determine the ratio of the magnitude of the normal force to the weight of the car when (a) θ = 18o and (b) θ = 30o.

*October 23, 2014*

**Physics**

A 1410-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16760 N on the submarine, as well as a downward resistive force of 1080 N. What is the submarine's acceleration?

*October 23, 2014*

**Physics**

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=54300 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the magnitude of the lift...

*October 23, 2014*

**Chemistry**

The combustion of liquid ethanol (C2H5OH) produces carbon dioxide and water. After 4.60mL of ethanol (density=0.789g/ml) was allowed to burn in the presence of 15.45g of oxygen gas, 3.70mL of water (density=1.00g/ml) was collected. a)Determine the theoretical yield of H2O for ...

*October 21, 2014*

**Physics**

A golfer hits a shot to a green that is elevated 3.10 m above the point where the ball is struck. The ball leaves the club at a speed of 19.4 m/s at an angle of 33.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*October 17, 2014*

**physics**

i can't figure that out i got the wrong answer

*October 17, 2014*

**physics**

A golfer hits a shot to a green that is elevated 3.10 m above the point where the ball is struck. The ball leaves the club at a speed of 19.4 m/s at an angle of 33.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*October 17, 2014*

**math**

A Bank teller has $16.50 in quarters and dimes. There are 25 fewer quarters than dimes. How many quarters does he have?

*September 29, 2014*

**Physics**

Two masses are connected by a string over an ideal pulley as shown. The coefficient of kinetic friction between m1 and the table surface is 𝜇. Find an expression for their common speed after the blocks have moved a distance L. You can assume that you know: m1, m2, L, ...

*June 8, 2014*

**Physics**

Never mind i figured it out

*June 8, 2014*

**Physics**

A system gains 473J of kinetic energy while losing 271J of potential energy. The thermal energy increases by 127J . Use an energy bar chart of this process to find the external work Wext.

*June 8, 2014*

**Cost Accounting**

The accounting records of Nu-tonics Inc., include the following information for the year ended December 31, 2013: Materials Inventory as at 1 January 2013 $ 20,000 Materials Inventory as at 31 December 2013 $ 24,000 Work in process Inventory as at 1 January 2013 $ 12,000 Work ...

*April 29, 2014*

**language**

What is the simple predicate in this sentence: Renewable resources include air and water.

*September 23, 2013*

**statistics**

Describe the distribution of sample means (shape, expected value, and standard error) for samples of n _ 36 selected from a population with a mean of ì _ 100 and a standard deviation of _ _ 12. The distribution of sample means is not always a normal distribution. Under ...

*June 9, 2013*

**statistics**

A nutritionist studying weight gain for college freshmen obtains a sample of n = 20 first year student at the state college. Each student is weighed on the first day of school an again on the last day of the semester. The following scores measure the change in weight, in ...

*June 9, 2013*

**geometry**

how far up the wall is a 13 ft ladder, if the baseof the ladder is 8 feet away from the wall

*January 15, 2013*

**physics**

A bullet of mass m=10 g is fired with initial speed vi = 400 m/s into a block of mass M=2 kg initially at rest at the edge of a frictionless table of height h=1 m as shown in the figure. The bullet remains in the block, and after the impact the block lands a distance d from ...

*January 14, 2013*

**physics**

Two objects are approaching an intersection. One is a 50 kg traveling at 8 m/s from east to west and the other is a 40 kg going from south to north at 12 m/s. (a) Find the x and y components of the net momentum of this system. (b) What are the magnitude and direction of the ...

*January 14, 2013*

**Spelling**

Thank you Ms. Sue! :)

*September 7, 2012*

**Spelling**

What spelling pattern is in long a and long I words?

*September 7, 2012*

**math**

give exact and approximate solution to the third decimal (x-6)^=18

*July 7, 2012*

**world history**

In what ways did geography and climates affect the development of human society?

*February 26, 2012*

**math**

A company manufactures calulatoirs in batches of 64 and ther is a 5% rate of defects. Find the standard deviation for the number of defects per batch

*October 24, 2011*

**chem**

thanks

*October 5, 2011*

**chem**

2H2(g)+ O2(g) --> 2H2O(L) I know the oxidizing agent is oxygen and the reducing agent is hydrogen. what are the number of electrons transferred in the balanced chemical equation? (I put 2 and tried -2 but it didn't seem right)

*October 5, 2011*

**grammar**

Thank you all so much, my friends and I were arguing about this.

*July 3, 2011*

**grammar**

Is the following an interrogative of declaritive sentence Guess who we saw today

*July 3, 2011*

**criminal justice**

a 350- to 700-word response describing each court level and its responsibilities. Then, describe the two main differences you found between the state and federal court systems

*May 20, 2011*

**Trig. Math**

Im not sure , but say if it was... can u explain it to me?

*January 20, 2011*

**Trig. Math**

The mean score on a normally distributed exam is 42 with a standard deviation of 12.1. Which socre would be expected to occur less than 5% of the time? 1) 25 2) 32 3) 60 4) 67 -I know the answer is 67, but i don't know why .. PLEASE help!

*January 20, 2011*

**algebra**

solve by graphing 2x+y=1 and x-y=2

*December 13, 2010*

**math**

2x^4-9x^3=21x^2-26x+12/2x-3

*September 22, 2010*

**math**

2x^4-9x#+21x^2-26x+12/2x-3

*September 22, 2010*

**math**

2x^4-9x#+21x^2-26x+12/2x-3

*September 22, 2010*

**adult education**

Already Tried: Proposal to Solo Practitioner or Head of Firm For your Midterm Project, you will draw upon what you have learned so far in this course. Recall back to Unit 2, where you developed guidelines for ensuring network security in your office. In Unit 3, you summarized ...

*August 26, 2010*

**math157**

Wonderful, Thanks for your hel:)

*August 14, 2010*

**math157**

How many three-symbol codes (letter-number-number) can be made from the letters S, P, Y and two digits from the set {0, 1, 2, …,9} without repetition? I think I am suppose to match each letter with a number until I exhaust all possibilities but I am not sure can you help ...

*August 14, 2010*

**PSYCHOLOGY**

“There are many social and cultural contexts you interact with that strongly influence development. These contexts include people you interact with daily, neighborhood factors, and larger scale social and cultural variables. In order to fully understand how the ...

*July 17, 2010*

**psychology**

Kayla is curious about objects and activities, like climbing walls, drinking at a fountain, and playing at the park. However, Kayla’s mother hovers over her, clearly worried about her safety and restricting her exploration and play. According to Erikson, what is the ...

*July 17, 2010*

**Food Chemistry**

1. 200.0 mL = 0.20 L Molarity = moles of solute/liter of solution 2.00M = moles of solute/0.20 L Moles of solute = 2.00M x 0.20 L = 0.40 moles sodium acetate Grams of solute = moles of solute x molar mass Grams of solute = 0.40 moles x 82.03 g/mol = 32.8 grams sodium acetate

*April 29, 2010*

**spanish**

What does Que vas a hacer en tu viaje mean

*April 14, 2010*

**Literature**

If you consider The Call of the Wild to be an Allegory,which one of the following statements would be true?

*April 7, 2010*

**geometry**

I am currently in a section of my geometry book titled Applying Properties of Similar Triangles. This is a very easy section but there is on problem where I cannot figure out (forgot) the next step. 1. z-4 12 --- = --- z/2 10 2.(z-4)10 = (z/2)12 3. 10z+40 = ? Thank you for ...

*December 8, 2008*

**Medical Terminology**

I am trying to write a paper.I am to using jcaho and ismp. I have to answer the following questions: How can eliminating abbreviations reduce errors? Should written policies be developed for abbrevation usage? If yes what should the policies contain? If no,explain. When are ...

*September 24, 2008*

**georgraphy**

Exports of tin and silver. Were the mainstays of the blank?

*September 8, 2008*

**Law and Ethics**

I am taking courses with Penn Foster also. I am having the same problems as every one else. I have the Law and Ethics paper and 2 more and I am done.This paper is driving me nuts.I submitted it once and I got a 55 on it.

*July 20, 2008*

**English**

Thank you

*April 28, 2008*

**English**

17a. Each of the applicants must submit his or her completed form to the interviewer. 17b. Each of the applicants must submit their completed forms to the interviewer. I chose A. is that right? please explain.

*April 28, 2008*

**English**

oh, thank you!!

*April 28, 2008*

**English**

18a. My brother knows more about technology than me. 18b. My brother knows more about technology than I. my answer is B. please explain answer

*April 28, 2008*

**AP chem**

Thanks for working everything step-by-step! Truly appreciate it!

*November 7, 2007*

**math**

if absolute value of x-6 is greater than or equal to 4 which of the following must be true? A) absolute value of x > 10 B) x > 10 C) x < 2 D) x > -2 E) none of the above

*October 18, 2007*

**math**

the absolute value of a certain integer is greater than 3 and less than 6. which of the following could not be 2 less than the integer? A)-7 B)-6 C) 2 D) 3 E) 4

*October 18, 2007*

**math**

why is the smallest value 4?

*October 18, 2007*

**math**

if g(t)=4+square root of 9-t, what is the smallest possible value of g(t) A) 0 B) 3 C) 4 D) 5 E) 9

*October 18, 2007*

**physical science**

In science, what kind of ideas are generally accepted?

*August 28, 2007*

**Microeconomics**

For each of the following situations for the egg market, describe what the impact on the equilibrium price and equilibrium quanity would be. 1-A sureon general warns that high-cholesterol foods cause heart attacks. - This would cause the price to drop and the quanity to ...

*July 20, 2007*

**Microeconomics**

The supply of meat in Russia increases, causing meat prices to fall. Lower prices always means that Russian households spend more on meat. There is something wrong with this sentence. What is wrong? The work ALWAYS should not abe in here. Just because prices of meat fall does ...

*July 20, 2007*

**Microeconomics**

Demand increases, causing prices to rise. Higher prices cause demand to fall. Therefore, prices fall back to their original level. This sentence is wrong. What is wrong with it? If demand increases, wouldn't it stay increased which will not cause the prices to fall back to...

*July 20, 2007*

**English**

I am trying to help my son do "word extensions". I don't know what that means. Can someone help me? Example? rate Extension ? Extensions?? Would they be suffixes or extended meanings from the base word, do you think? rate ~~> ratio ?? Thank you for using the ...

*May 21, 2007*

**Chemistry**

Above, D is incorrect. Use the density (2.86g/L) and multiply by its STP (22.4L). Multiply that number by each percent (43.7%, 50%, and 6.3%) to get a mass of each in grams. Divide by each's molecular weight to get the subscripts for the chemical compound. You should get ...

*March 26, 2007*

**english question**

what does bias mean? In referring to cloth, the bias is diagonal to the weave; it's not vertical nor horizontal -- it's diagonal. In our society, bias is related to the concept of prejudice: http://www.answers.com/topic/bias =)

*September 27, 2006*

**Year 8 maths assignment - Algebra**

The question on my assignment I'm having trouble with is: 18xy squared + 12x squared y cubed I have to factorise it, and it doesn't work out. If anyone knows how to do this question, please help! I suggest that you go to some-one that know's what there talking ...

*August 27, 2005*

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