# 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.

**6th grade**

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

**6th grade**

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**

Your Steps made everything clear. Thank you so much :D

**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.

**Math 6th grade**

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 ...

**6th grade Social Studies**

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

**12 grade**

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?

**7th grade science**

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?