# Posts by Bobby

Total # Posts: 770

ap stats
Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample who ...

physics
Design an array of individual solar cells that woulproduce 120 volts DC. About how large an area of solar cells would be needed to produce 2 kWe of/ output power at noon on a clear day

college
true

spanish
1. What are some similarities and differences between who is considered a friend in a Spanish- speaking country and in the United States?

algebra
Solve for x 1. log5 X=3 2. Log2 16-log2 =x 3. Log9 6561=x

computer
What can be added to the microsoft surfaace computer to make it better.

At basketball camp, Belicia made 13 baskets for every 25 shots attempted. What was Belicia's success rate per attempt?

Hello, I need help in trying to figure out rates (as in ratios and rates). What is a formula that I would use? Thanks in advance.

AP Chem

AP Chem
How many mL of 3.84 M HCL are required to consume 4.12g of Zinc in the following reaction? Zn(s) + 2HCL(aq)----> ZnCl2(aq) + H2(g)

Calculus
Find two numbers whose sum is 10 for which the sum of their squares is a minimum.

wat u need help on

Science
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.550. If a trial's absorbance is measured to be 0.350 and its initial concentration of SCN– was 0.0010 M, the equilibrium ...

pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeease help me!

physics
4 meters 8 m/s

physics
4 meters

Chemistry I
V = unknown volume of H2O, which equals the mass because the density is 1.00 V(4.184)(23.5-18.2) + 24.4(4.184)(23.5-35) = 0 22.1752V = 1174.0304 V = 52.94mL

12 math
(k+t)^22. wat ar the coeffiecient of the firt three terms

for the expression (k+t)^22. what are the first 4 terms i the expressio without using coeffiecients

12math
Find the term not involving y in the expansion of (1 + y2)^5 y^3

math gr 2
P(n,5)=20P(n,3) Solve for n

Criminology
This is what I have so far, but I can not find statistics for effectivness. Property Crime Prevention: 1- Keep your car doors locked. 2- Don't leave valuable items in plain view or unattended. 3- Keep a neighborhood watch. Prevention of Enterprise Crime: 1- Don't give ...

Criminology
What are three crime prevention methods for property crime and three crime prevention methods for enterprise crime? And how successful is each prevention method? Are there statistics and anecdotal to show this evidence?

Algebra
so what would the expression be?

Algebra
Im sooo confused!! can someone please help me step by step?? In a 4- team tournament, the winner gets 1/2 of the proceeds, the second-place team gets 1/4 of the proceeds, and the remaining proceeds are shared equally among the other two teams. Write the expression that shows ...

Algebra
Im sooo confused!! can someone please help me step by step?? In a 4- team tournament, the winner gets 1/2 of the proceeds, the second-place team gets 1/4 of the proceeds, and the remaining proceeds are shared equally among the other two teams. Write the expression that shows ...

Algebra
are you sure that's right cause then they get to keep one half of the remaining money. how would you do that

math
How do you know that an equation is linear or nonlinear?

Criminal Justice
How are the motivations of property criminals different from those of enterprise criminals?

a group of similar cells that work together to do one job

Criminal justice
Restorative justice may be the model that best serves alternative sanctions. How can this essentially humanistic approach be sold to the general public that now supports more punitive sanctions? For example, would it be reasonable to expect that using restorative justice with ...

Physics
Thank you

math
you have 15 yards of ribbon for your gift boxes. each box gets the same amount of ribbon how much ribbon will each of your 20 gift boxes get?

History
I understand Watergate its self, but I do not completly understand the long term affect Watergate has had on our history. Here is what I think, but I am not sure I am on the right track. What do you think? Watergate was a largely significant event of the 1970’s because ...

History
Why is Watergate important to our history?

precalculus
tan(sec-1sqrt(2))

math
Thank you so much, drwls. I understand it now!

math
tan(sec-1sqrt(2))

polotics
To what extent did the pope influence the Russians, where he has generally had little impact due to the Russian Orthodox Church's sway? Wasn't the pope, John Paul II, much more influential in eastern Europe, particularly in Poland, which was his homeland?

Maths
X and Y are points on the sides BC and AC of a triangle ABC respectively such that angle AXC = angle BYC and BX = XY. Prove that AX bisects the angle BAC. I believe the first step is to prove ABXY is a cyclic quadrilateral. Unfortunately, I don't know how!!!

his
How did Reagan's policies reflect conservative politics and contribute to stimulation of the economy?

history
Thank you for all your help. NOw I know what direction I need to go with this assignment.

history
This is what else I have found. Nixon's policy of engagement with the Communists was called detente. Rather than military confrontation, Nixon championed diplomatic conversations. Nixon established relations with China and used that as a wedge against the Soviet Union. ...

history
That is all of the information I have, and that is why I am having such a hard time. I think I am camparing Nixon's policies of enagaement with Nixon's foreign policy duirng the Cold War. Here is the info I have found so far, but I am not sure that I am going in the ...

history
I need to campare Nixon's policies of engagement with foreign policy stratagies used during the Cold War.

history
Compare Nixon's policies of engagment to foreign policy strategies during the Cold War

History
Compare Nixon’s policies of engagement with foreign policy strategies used during the Cold War.

chemistry
what is the chemical equation for cabonated water

Science
Describe the plant life, animal life, and geology of the ecosystem in the area in which you live. What populations and communities are present? How dependent is your community on this ecosystem? What are the limiting factors of the ecosystem? How do I find this information? I ...

science
There are many drugs that aid our lives on a daily basis that are made/mass produced due to the assistance of bacteria. Can you give a few examples of such drugs and perhaps tell a little about the process?

science
What are plasmids and how do they aid scientists as a biotechnology tool?

Global Warming/Social Studies/Science/Chemistry.
Is there scientific evidence for man made global warming? For yes or no, please indicate links. Thanks!

science
In general, populations have the ability to increase exponentially, but why do you think that most populations are fairly constant in size?

SCIENCE
THERE ARE THREE SOURCES OF RESISTANCE IN A PARALLEL CIRCUIT,S . TWO OF THEM ARE RATED AT 20 OHMS THE OTHER AT 10 OHMS WHAT IS THE CIRCUIT,S TOTAL RESISTANCE.

science
What do altruism and kin selection have to do with natural selection?

science
I looked at the site, but there was only a picture, but nothing to read about evoultion.

science
How do you think evolution has affected humans?

mathematics
please if you kow the answer to this help me :) Changeing -1.625 into a fraction solving 4/5 divided by 1/3 2/3 x 1/4 - 5/6 it would be a great HELP

Biology
How do the reproductive and hormonal systems of the human body interact and support each other?

science
explain how the physiological process of movement differs among bacteria, grasshoppers, fish, bears.

Algebra
What similarities and differences do you see between functions and linear equations studied in Ch. 3? Are all linear equations functions? Is there an instance when a linear equation is not a function? Support your answer. Create an equation of a linear function and provide two...

English
Doing a simple search would be helpful... here is something I googled on how to be like Amelia Earhart, which would translate to what she was like/her philosophy in life. # Don’t allow others to define you. Earhart was praised after her Friendship flight, but she didn&#...

Math
I think this is more of a statistics question. Disjoint events are two events that cannot happen simultaneously (i know this from ap stat). Overlapping events (im speculating here) is probably the opposite, they either only happen together (if one occurs, the other must occur...

Physics
Took a leaf out of Eileen's book for the picture corresponding to the problem (you have to delete the spaces in 'h t t p :'): h t t p ://img444.imageshack.us/img444/1057/circuit6pk4.png In the circuit that is in the link above, the switch S is initially in the open...

Chemistry
Cannot be answered for obvious reasons. Please actually look at what you're submitting before posting.

algebra
Not sure if this is right, but 30% acid is 5% away from Solution A, and 10% away from Solution B, so I figured the ratio needed of Solution A:Solution B was 2:1. I then did 2x+x=60 x=20 since the ratio is 2x:x, it is also 40:20. 40 liters Solution A, 20 liters Solution B.

Algebra 2
its (c), 120x^3/z^3.

Science
possibly cells? you're going to have to be a little more specific if that's not right.

Physics- Circuits
Thanks again! and I will definitely check your arithmetic to make sure. You are seriously the best helper here! =]

Physics- Circuits
A 100-microCoulomb parallel-plate capacitor is charged with a 24V power supply, then is disconnected from the power supply. a) The plates are moved 0.01 m apart to 0.05 m apart. What happens numerically, to the: i. Capacitance of the device? ii. Potential difference between ...

Algebra
ln e^lnx-ln(x-3)=ln8 First of all the "ln of e" cancels out, so it is just: ln(x)-ln(x-3)=ln(8) which is the same as: ln(x/(x-3))=ln(8) e^ both sides... x/(x-3)=8 x=8x-24 7x=24 x=24/7

algebra1
y-6=x 10x-4y=12 plug first equation into second equation: 10(y-6)-4y=12 10y-60-4y=12 6y=72 y=12 12-6=x x=6

Math
-52.4576 is the correct answer. ln9^(x+6)=ln7^x (x+6)*ln(9)=x*ln(7) (x+6)/x=ln(7)/ln(9) x/x+6/x=.885622 1+6/x=.885622 6/x=.885622-1 6/x=-.114378 x=6/(-.114378) x=-52.4576

Physics- Circuits
Thanks!

Physics- Circuits
At time t=0, a potential difference of 475 V is applied to a coil with an inductance L=0.642 H and a resistance R=36 ohms. How long does it take to reach 20 percent of maximum energy in the inductor?

math riddle ALGEBRA WITH PIZZAZZ
this is hard

Physics DC Circuit
In the last drawing you can sort of get the idea of how my circuit is drawn (its still flawed obviously) but if you redraw on a piece of paper it is easy to see. Any input is appreciated. Sorry for all the posts. I can't tell how it will come out until it is actually posted.

Physics DC Circuit
|-----2-----------------2--------| |*****************|**************| ___***************5**************3 *-****************|**************| |****************___*************_ 2*****************-*************___ |*****************|**************| |****************I3...

Physics DC Circuit
|-----2 ohm r-----------2 ohm r--| |*****************|**************| ___************5 ohm r********3 ohm r -****************|**************| |****************___*************_ 2 ohm r***********-*************___ |*****************|**************| |****************I3...

Physics DC Circuit
A |-----2 ohm r-----------2 ohm r--| | | | ___ 5 ohm r 3 ohm r - | | | ___ _ 2 ohm r - ___ | | | | I3 | | | | |-----<I1<---------------<I2<----| B Hopefully my drawing came out right because I can't find a way to attach the picture of the circuit. Key: 2 ohm r...

math...help me! this is hard!!!!
No problem! These kinds of probs are fun =]

math...help me! this is hard!!!!
Scoop water using the 3 liter jug and poor it into the 10 liter jug. Do this 3 times. You should have 9 liters in the 10 liter jug. Pour from the 10 liter jug into the 7 liter jug until the 7 liter jug is full. You should have 2 liters in the 10 liter jug now. Scoop up another...

algebra 1
She walked half the distance, or 2 miles. 2 miles * 1h/3mi = 2/3 hours 2/3 hours or 40 minutes

math
It depends. Usually you split up the irregular figure into many regular figures which you add up. I don't know what math you're in. If you give me specifics I can help you out more (up to one step above BC Calc)

Geography
Could also be Caucasus Mountains

Geography
Ural Mountains

math
Is that equal to something? Do you want to factor it? If it's an equation and this is only one side of it, then the first step is probably to factor it anyways, so 6x^2+7x-3=(2x+3)(3x-1)

Math
8 and 7/8ths 8*(8/8) + 7/8 64/8+7/8 71/8 8.875

Math
24in=2ft 15in=1.25ft 2ft*1.25ft=area of 1 poster=2.5 sq feet (2.5 sq ft)*6 posters=15 square feet of material.

Math
area of table=pi*(3.5)^2=3.14*(3.5)^2=38.465 (38.465 sq ft)*(6 dollars/sqft)=230.79 dollars

Math
6.9

Math
3.07, 3.071, 3.0712, 3.0717, 3.072, 3.078

Math
6 is the greatest common factor 12*18*30=6480 Divide the product of the numbers (6480) by the greatest common factor (6) So 6480/6=1080

Physics-Gauss' Law, hard
Damon, you are amazing... Tell me if you get the second one please, I'm still having trouble. In the meantime I temporarily took over your role answering all the math questions =].

Physics-Gauss' Law, hard
Thank you Damon for answering my first questions fast and accurately. Do you or anybody else know how to do these harder Gauss' Law Problems? 1. A solid metal sphere of radius R has charge +2Q. A hollow spherical shell of radius 3R placed concentric with the first sphere ...

psycology
I'm not taking psychology but I looked online and got this (look at 3rd paragraph if you want to jump right into it- I'm not sure if that's what you're asking about). This site specified Glutamic acid, Glutamine, and Glutamate: Glutamic acid is an organic acid ...

Physics-Gauss' Law
1. If a surface is a 10 meter by 10 meter plane lying in the y-z plane, what is the vector representing the area of the plane? 2. If a sphere of radius 2 meters is placed in a uniform electric field of 3 N/C, what is the net flux through the sphere? 3. Show how Gauss's Law...

word unscramble in french
what is alueti unscambled in french?

math
what do you call it when somebody spens 20 years in the 24th row of a theater?

math
what do you call a person who spent 20 years in the 24th row in the theatre?

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