# Posts by Aaron

Total # Posts: 552

**chemistry**

pKa=4.5

**geometry**

In an isosceles triangle ABis congruent to BC. Measure of angle A is x +3y and the measure of angle C is 3x +2y. The measure of angle C is 63 degrees. Find x and y.

**Physics**

1. Free-fall: A ball is thrown vertically upward. What are its velocity and acceleration when it reaches its maximum altitude? What is its acceleration just before it hits the ground?

**Calculus I**

Consider the function f(x)=((2)/(x^2))-((3)/(x^5)). Let F(x) be the antiderivative of f(x) with F(1) = 0. Find F(3).

**4th grade**

if jen has X pogs then we have the following: Marty: JEN x+6 : X X+6-10 :x+10 X-4 : X+10 then to find the difference we substract X+10 -(X-4) = 14 Jen has 14 pogs more than Marty

**american gov**

Of the roles that the press plays in the American political system, which is it least equipped to carry out properly? a. common-carrier b. signaler c. watchdog d. public-representative e. news interpreter i think its E but im not sure

**math**

An adult cheetah weighs about 130 pounds. An adult mountain lion weighs about 170 pounds. A sutdent estimates that a mountain lion weighs about twice as mush c as a cheetah. Is the estimate reasonable? Explain why or why not?

**2nd grade**

i need a sentence with the word slid

**physics**

Compute the order of magnitude of the mass of (a) a bathtub filled with water, and (b) a bathtub filled with pennies. In your solution list the quantities you estimate and the value you estimate for each.

**Physics**

A solar still is used to make fresh water from salt water by evaporation. Assume that during a summer day that 1000 BTU/ft sq of solar energy falls on the surface of the salt water. Determine how many inches of water are evaporated in 30 days. Assume that 1040 BTUs is needed ...

**Physics**

A nuclear power plant generates (output) 500 mw. It is 34% efficient. The waste heat going in the Connecticut River with an average flow of 3*10 exp 4 (kg/sec). How much does the water temperature rise?

**Physics**

Can you do this for 3m/s^2?

**geometry**

Find the measure of each exterior angle of a reguler 11-gon. round your answer to two decimal places if neccesary?

**12th grade - Math**

1x1=1x10000+9+9+9=10027

**math**

what is the largest whole number x for which 2x is less than 13.7?

**12th grade-Advanced functions**

the y-intercept of the graph of y=k(x-1)(x-2)(x-3) is 24 Determine the value of k.

**12th grade-Advanced functions**

Given that f(x)=g(x/3), describe how the graph of f and g are related?

**12th grade-Advanced functions**

Determine the vertical asymptotes of the graph of graph of y=secx/logx for x≤2pi

**12th grade-Advanced functions**

provide any 2 solutions for the equation y=cot(1/2(theta-pi/2))-5 solutions may be in degrees

**Pre-Cal**

Yes it does. I will multiply cos60 which is 1/2 by 500 and add 4 feet. And I would use cos because it is adj/hyp. Is that a fairly good explanation?

**Pre-Cal**

A person flying a kite holds the string 4 feet above ground level. The string of the kite is taut and makes an angle of 60 degrees with the horizontal. Approximate the height of the kite above level ground if 500 feet of string is payed out.

**Chemistry**

SO one unit as well? I don't really get it.

**Chemistry**

I am having big troubles on this question. What is the increase in acidity associated with a decrease of one unit on the pH scale?

**trigonometry**

Find the length of the arc that subtends an angle of measure 70 degrees on a circle of diameter 15 centimeters.

**Stress Management Techniques**

THIS WAS A GREAT HELP. KEEP POSTING AND SHARING FOR OTHER SUBJECTS ON THE PERSONAL TRAINER PROGRAM FOR PF. its a life saver!

**maths**

you want to make a flower bed in your garden. What shape would it be to make the biggest possible peramiter for an area of 214cmsq

**English**

Write an essay explaining how epics reveal a civilization's customs, manners, and values. Support your ideas with at least three references from The Odyssey.

**3rd grade**

What can I write about the heart?

**Math**

Round 1,643,253 to the nearest hundred thousand. I say it's 1,600,000 but the workbook says 1,700,000. Please explain.

**math(answer quick!)**

closed or 2-d im a kid so idk hope this helps

**Chemistry**

I have to figure out which Atmospheric Pressure and Vapour Pressure pairs would cause boiling.

**Chemistry**

In which pair(s) would boiling occur? (Each pair corresponds to one row of the table) a. 760 {mm,Hg} 700 {mm, Hg} b. 480 {torr} 480 {mm, Hg} c. 1.20 {atm} 912 {mm, Hg} d. 1020{mm,Hg} 760 {mm, Hg} e. 740 {torr} 1.00 {atm}

**Chemistry**

Use molar volume to solve the following problems at STP. Find the volume mL occupied by 0.400 mole He. Find the number of grams of neon contained in 10.2 L Ne gas

**math**

Suppose a jar contains 5 red marbles and 33 blue marbles. If you reach in the jar and pull out 2 marbles at random without replacement, find the probability that both are red.

**physics**

A length of organ pipe is closed at one end. If the speed of sound is 344 m/s, what length of pipe is needed to obtain a fundamental frequency of 74 Hz? Answer in units of m.

**Physics**

If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 140 Hz? Answer in units of cm.

**Physics**

If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 140 Hz? Answer in units of cm.

**chemistry**

Calculate the molar heat of neutralization in kJ/mol of the reaction between HA and BOH given the following information: The temperature change equals 7C, 50 mL of 1 M concentration of Acid 50 mL of 1 M concentration of Base Heat capacity of the calorimeter is 6.5 J/C. ...

**Math**

What this person means is : cosQ = 5 and tanQ = 2sqrt6

**College Chemistry**

I don't have an answer.

**Tennessee State University**

How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

**Tennessee State University**

How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

**Tennessee State University**

How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

**physics**

Two 72.0 kg hockey players skating at 5.25 m/s collide and stick together. If the angle between their initial directions was 125 degrees, what is their speed after the collision?

**precalculus**

an airplane flying at 550 miles per hour has a bearing of N 58(DEGREES)E. After flying 1.5 hours, how far north and how far east has the plane traveled from its point of departure?

**Statistics**

Ok please help me. Here is my stats question Suppose there is a 20% chance of striking oil at a certain location. An oil company drills at 5 different spots. What is the probablity of them striking oil on at least one of the spots? Any help is greatly appreciated

**science**

what is the biggest animal alive today

**Math - Trigonometry**

Math - Find the amplitude, period, phase shift - y=cosPi/2 (x+1/3)

**Math - Trigonometry**

Find the amplitude, period, and phase shift - y=cosð/2 (x+1/3)

**Science**

The basic units of heredity that determines traits are?

**Physics**

The block in lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 56 N/m. Initially, the spring is at its relaxed length and the block is stationary at x = 0 m. Then an applied force with a constant magnitude of 3.0...

**5th grade**

lightning is an example of electricity. what is another type of energy asociated with lightning

**Statistics**

D. It can be biased by one or two extremely small or large values. The advantage is that it takes every number into account. The disadvantage is that if you have a very large or very small number disproportionate to the rest then you calculations will be slightly off.

**English - Shakespeare**

I was wondering if you could help me find literary devices in this passage in "Much Ado about Nothing" by Shakespeare: BENEDICK That I neither feel how she should be loved nor know how she should be worthy, is the opinion that fire cannot melt out of me: I will die ...

**English**

I was wondering if you could help me find literary devices in this passage in "Othello" by Shakespeare: Desdemona: "My noble father, I do perceive here a divided duty: To you I am bound for life and education; My life and education both do learn me How to ...

**Calc**

An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 3 km east of the refinery. The cost of laying pipe is $300,000 per km over land to a ...

**Calc**

The rate (in mg carbon/m3/h) at which photosynthesis takes place for a species of phytoplankton is modeled by the function below, where I is the light intensity (measured in thousands of foot-candles). P = (120 I) / (I^2 + I + 1) For what light intensity is P a maximum?

**geography**

i have to make a collage of four towns in britain help !!!!

**Chemistry**

Find moles first: That is M x L = 0.20 x 0.500L = ? Then convert from moles to grams with moles/molar mass. You want to use the molar mass of NiSO4.6H2O: 0.10 mol x 262.84 g/mol = 26.28 g of NiSO4.6H2O

**math statistics**

The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern Kentucky (The Cincinnati Enquirer, January 21, 2006). Use this price as the population mean, and assume the population standard deviation is $.20. 1. What is the probability that ...

**statistics math**

The unemployment rate is 5.8% (Bureau of Labor Statistics, April 3, 2003). Suppose that 100 employable people are selected randomly. 1)What is the probability that exactly six people are unemployed (to 4 decimals)? 2)What is the probability that exactly six people are ...

**math**

any can help me please?

**math**

can anyone show me how to work this problem out thanks in advance The Census Bureau provides data on the number of young adults, ages 18–24, who are living in their parents' home (the data include single young adults who are living in college dormitories because it is...

**math statistics/probability**

can anyone show me how to work this problem out thanks in advance The Census Bureau provides data on the number of young adults, ages 18–24, who are living in their parents' home (the data include single young adults who are living in college dormitories because it is...

**math**

Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...

**math**

Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...

**college math statistics**

Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...

**math statistics/probability**

Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...

**Science**

I'm not an expert nor a teacher but I'm a college student and I think the answers are 1. procedure 2. error

**math statistics**

Hello I am having trouble trying to figure out how to do this probability word problem: In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady gains. The ...

**Technology**

I need help with my entry essay, "The Twentieth Century brought an explosion of discoveries and inventions in math, science, and technology. Choose one such discovery or invention, identify it, and name the people responsible. Then explain how this discovery or invention ...

**1st. grade**

well wut about tvs

**Math**

i don't really no actually

**Math**

that still does not explain how 2 simplify it

**Math**

wuts the simple form the expression 8x-2+5-5x-2+3? i hav been stuck on this question 4 a very long time and need some help

**Citizenship**

How is Fair-trade a citizenship activity? Is it active?

**physics**

An ostrich can run at speeds of up to 72 km/h. How long will it take an ostrich to run 1.5 km at this top speed?

**physics**

An ostrich can run at speeds of up to 72 km/h. How long will it take an ostrich to run 1.5 km at this top speed?

**math**

Express 2,750,389 in scientific notation

**7th grade**

can anyone help me with this question? (3y-2x)2 don't take the 2 a times 2. does anyone no the answer.

**spanish**

no problem

**spanish**

yeah i no

**spanish**

well don't u see that the question is saying to ask for something if u look carefully

**spanish**

i would think c would be the correct answer

**spanish**

are u sure about the answer 'cause im pretty sure it is incorrect

**7th grade math**

oh yeah sorry about that student was me until i changed the name.

**7th grade math**

what did u get as an answer?

**7th grade math**

Does anyone no what to do with this equation..... here it is..... 5x x 18.75=93.75 do u divide or do i multiply to get my answer.

**Math**

yeah ... thanks

**heroes**

the anwser to that would be DC(not the skateboarding company or washington dc)

**Geometry**

oh... wow, thx.

**Geometry**

E is the contact point. F and C are on the circle and 180 degrees from each other. Angle D is EDF. finally, I need the angle measure of Arc EF

**Geometry**

I have a circle with a Tangent line, DE, running along it and connecting with another line, FC, which runs through the center of the circle to the other side.I have connected the center of the circle with point E on the edge of the circle with a radius. I have labeled the ...

**Geometry**

I have a circle with a Tangent line, DE, running along it and connecting with another line, FC, which runs through the center of the circle to the other side.I have connected the center of the circle with point E on the edge of the circle with a radius. I have labeled the ...

**Geometry**

I have a circle with 2 lines that are connected and tangent to the circle. The lines are CA and CB angle ACB is 50 degrees. Arc AB inside of the tangent lines is X degrees find X

**science**

what is the chemical equation for electrolysis

**Question**

I'm from Tabetha's class, and wanted to look at her Jiskha message, but that didn't help. I tried searching for this, but it's too specific to find in a google search. Its something that requires a real, live human. Thanks for your understanding.

**Algebra**

Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form ax^2+bx +c = 0 The solution is 6 only solution.

**Physics**

This is a basic question on motion. I must choose a procedure to test sideward motion and have no clue where to start. I am in 2nd grade so this test needs to be relatively simple. Thanks!

**Ms. Office**

Why are you wasting forums for garbage?