Wednesday
May 4, 2016

Posts by BOB

Total # Posts: 2,933

English
these lines of dialogue from the dairy of anne frank, act 1 reveal a lot about anne's character. In the paragraph , explain at least two things that you find out about anne's personality from her words. can someone start me out please im not good at essays
May 4, 2016

Physics
A steel cable of diameter 15mm supports a lift of total mass 1500kg. If the maximum safe working stress for steel is 10^8 N/m^2, calculate how the lift was moving when the wire broke
May 4, 2016

Economics
A monopoly firm faces a demand curve given by the following equation: P = $500 − 10Q, where Q equals quantity sold per day. Its marginal cost curve is MC = $100 per day. Assume that the firm faces no fixed cost. You may wish to arrive at the answers mathematically, or ...
May 3, 2016

math
i do not know
April 29, 2016

math
Pedro pours 3 pints of iced tea into separate containers that can hold 1/2 pits of iced tea. how much iced tea Pedro had.
April 29, 2016

Science
In a series circuit if the circuit resistance is 560ohms and the inductive reactance is 1200ohms, what would be the voltage drop across the inductor
April 27, 2016

PreCal
Express the set W = { x ∣ | x | < 1 } using interval notation.
April 25, 2016

PreCal
Express the set W={x∣0<x<8} using interval notation.
April 25, 2016

PreCal
Express the setW={x∣x>2} using interval notation.
April 25, 2016

PreCal
Over a 5 week period, the price of an MP3 player dropped steadily, from $140 to $90. What was the average weekly change in the price of the MP3 player over this period?
April 25, 2016

physics question help plz!
1-What is the shape of the trajectory of a charged particle moving in a uniform electric field if its initial velocity is null? 2-What is the shape of the trajectory of a charged particle moving in a uniform electric field if its initial velocity is perpendicular to the field...
April 21, 2016

physics question
1-What is the shape of the trajectory of a charged particle moving in a uniform electric field if its initial velocity is null? 2-What is the shape of the trajectory of a charged particle moving in a uniform electric field if its initial velocity is perpendicular to the field...
April 21, 2016

Math
I have no idea. Sorry :(
April 20, 2016

Math
One alloy is 2 parts iron to 3 parts silver and another alloy is 7 parts iron to 3 parts silver. How much of each should be combined to produce a 30 pound alloy that is 1 part iron to 1 part silver?Please show me how to do this
April 14, 2016

calculus 1
L=22.360 W=44.722
April 13, 2016

science
what was the answers?
April 12, 2016

Math
What is 18 millionths written in standard form
April 11, 2016

math
x<0 or x>0 what's another way of expressing it in perfect square terms?
April 8, 2016

Physics
A 5.8 kg object is accelerated from rest to a speed of 53.3 m/s in 55 s. What average force was exerted on the ob- ject during this period of acceleration? Answer in units of N.
April 7, 2016

Art
Is it not b?
March 31, 2016

Math
We can't help you if not all information is present. If we see the whole question, we can provide a more accurate response to which will benefit you. Ms. Sue is correct; this post is insufficient.
March 22, 2016

physics
Displacement is a vector quantity that describes the shortest path between two points!
March 22, 2016

physics
You see some management students getting drunk at 1 PM in the quad. (Yes, this is an early wake up call for them.) You decide to tie a 2.00 daN water balloon on the end of a 1.00 m long light rope and start swinging it horizontally. The rope from your hand to the water balloon...
March 22, 2016

astronomy
On Earth, an astronaut weighs about 600 Newtons. The mass of the Earth is about 6 x 1024 kg, and the radius of the Earth is about 6.4 x 106 m. Suppose the astronaut climbs a ladder to a height of one Earth radius above the Earth. What is the new weight of the astronaut? please...
March 21, 2016

physics
what is the heat capacity of a gold ring that has a mass of 7.00g
March 18, 2016

Physics
Suppose the 480 lbs pile driver that drops 20 ft drives the pile 2.0 in. every time it strikes the pile. What is the average resisting force of the ground where the pile is driven? Answer: 57,600 lbs Show Work
March 18, 2016

Physics
A 25 g bullet with a muzzle velocity of 300 m/s is fired into a board 4.0 cm thick. For a soft board, the bullet goes through the board and emerges with a speed of 50 m/s. What was the average force exerted on the bullet by the board? Answer= 27344 N Show Work
March 18, 2016

Maths
9.6
March 14, 2016

Maths
9.9 rounding to the nearest meter
March 14, 2016

English-poem help
Is the poem I wrote a sonnet? My aunt has cancer, i dont know how, i sit and wonder why. I get mad at God and often say i hate him. I know its not his fault, but who am i supposed to blame, its all just bad shame. I walk to see her on her bed, in pain, holding on to her cane. ...
March 13, 2016

Physics
A falling rock has a speed of 1.5 m/s. What is the velocity of the rock when it hits the ground 5 seconds later? Give the magnitude and direction
March 13, 2016

Art World Culture
butthole
March 4, 2016

math
What is 6x to the third power+3x to the second power -9x
March 1, 2016

science
l
February 28, 2016

math
A deck of cards are shuffled 20 times. You are dealt 12 cards at random: what is the probability that all 12 cards are black? or what is the probability that all 12 cards are kings, queens or jacks
February 25, 2016

physics
butthole
February 18, 2016

algebra
34 - x - (x-1) 34 - x + x + 1 34 - 2x + 1 35 - 2x correct?
February 13, 2016

algebra
^ where do you get the 35 and 2x?
February 13, 2016

Algebra 1 (variable expressions)
6*(x-9)-5 When x=5
February 12, 2016

statistics
Scores: 5,2,4,2 ΣX-2 Σ(X-2) Σ(X-2)^2 can you show me a better idea how to solve this thanks
February 11, 2016

math
solve the following system of equations enter the x coordinate of the solution. Round your answer to the nearest tenth. 5x+2y=22 -2x+6y=3
February 11, 2016

Math
Find the largest $n$ so that $f(2) \cdot f(3) \cdot f(4) \cdots f(n-1) \cdot f(n) < 1.98.$
February 4, 2016

business
Please provide a short summary of your approach to business development and the methods that you use. this is not for school im just confused with the question
February 4, 2016

English
What is Anne Franks relationship with her parents compared to Peter VanDaan.
February 3, 2016

Math
Need help solving for x with work shown 2log6(4x)=0 Log2(x)+log2(x-3)=2
January 27, 2016

Chemistry
On the semi - reactions below is correct to say: Li + + 1℮- => Li. Eº = -3,04V. Au 3+ + 3℮- => Au. Eº = + 1,50V. Pb 2+ + 2℮- => Pb . Eº = - 0,13V. Ag + + 1℮- => Ag. Eº = + 0,80V. a) In the semi reaction Ag, the potential ...
January 22, 2016

Finance 101
Given the recent drop in mortgage interest rates, you have decided to refinance your home. Exactly five years ago, you obtained a $150,000 30-year mortgage with a fixed rate of 10%. Today, you can get a 30-year loan for the currently outstanding loan balance at 7.5% interest. ...
January 20, 2016

Math
x^(1/3)(x+3)^(2/3). Doing curve sketching and cannot seem to figure out what the values are to fill out the chart(intervals-f''-behaviour). I can't seem to find the conacvity values, i dont think they exist. How should I prove that they dont exist? Or do they, ...
January 19, 2016

Math
so mainly i relly dont know so good luck
January 19, 2016

Math
mainly i really dont know so goog d luck
January 17, 2016

Math
Esther drove to work at 45 miles per hour. Returned home at 30 miles per hour. If Esther spent a total of one hour commuting to and from work, how many miles did Ester drive to work in the morning?
January 17, 2016

Math
find the extrema of f(x)=x^(2/5), -3<=x<1. I find zero critical points, but the answer says there is a maxima and minima at 0 and -3.
January 17, 2016

ART 4 QUESTIONS PLZ HELP ASAP
Yay Sid is right I got 4/4
January 15, 2016

maths
a cube of material of side 3cm ( nearest mm) and mass 27 grams (nearest 10th of a gram) is placed into a bowl of deep water. Will the material sink or float? explain answer with suitable calcuations
January 12, 2016

Math
which points of f(x)=arcsin(sinx) are not differentiable? And what is the range of this function? How could I do this without graphing? I am just afraid that my test, which does not allow calculators, will have some question asking me to find this information. Also, when are ...
January 11, 2016

English
thank you
January 11, 2016

English
how can i improve thesis statment?
January 11, 2016

Algebra logs please help
Hi
January 11, 2016

Math
y=[(3-4x)^(2/3)]/[(x^2+8)^(1/3)*(7+4x^3)^2]
January 11, 2016

Math- steve? reiny?
1. Let f(x)=x^5 + 2x^3 + x - 1 Find f^-1(3) and (f^-1)'(3)? I have zero idea how to find the inverse of this function at a point 3, and how to take derivative of an inverse. 2.Let f(x)=cosx + 3x Show that f(x) is a differentiable inverse and find f^-1(1) and (f^-1)'(1...
January 11, 2016

Chemistry
In the lab, 5.8 L of methane gas is burned with excess oxygen gas at SATP. How much carbon dioxide gas is produced? **Based on the balanced chemical equation the ratio of methane gas to carbon dioxide is 1:1, this being said, does it make sense that as 5.8 L of methane gas is ...
January 10, 2016

Math
derivative of y=3(2x^(-1/2)+1)^(-1/3). I got -(2x^(-1/2)+1)*(-x^(-3/2))=y' but I don't know how to simplify it into 1/something. When I tried I only got [2x^(3/2)+x^2]/(x^(7/2)). Help with simplifying?
January 10, 2016

geometry
thanks
January 9, 2016

geometry
how can you find the geometric mean?
January 9, 2016

Math
I don't get what you did after log(Y)=Lim x->∞ (1/x)(xlog(5)+log(1+(2/5)^x) . Why is (2/5)^x -> 0, and hence log(1)=0??
January 9, 2016

Math
derivative of lim x->infinite (2^x+5^x)^(1/x)? I do it till [2^xln(2)+5^xln(5)]/(2^x+5^x) and then I can't simplify anymore. Help me out?
January 9, 2016

Math
Find limit as x approaches 0 of (1+sin4*x)^cotx I know how to do this question because there was a "hint“ in the question that said to use natural log. I was just wondering if someone could explain to me why using log works in this case along with l'hopital's...
January 7, 2016

Science
does any one know
January 7, 2016

Math
Could I please get some help for these 3 questions, apologies for asking so many, but they were the ones I was really unsure of: 1. Find an equation for the line tangent to y=ln(x) and that goes through the origin. I have no idea, the ln(x) stuff is confusing me. 2. derivative...
January 6, 2016

Math
The median of 8 numbers is less than zero. At most how many of the numbers are positive?
January 6, 2016

Math
Thank you very much! I get it now. For another question: y'=lim h->0 ((e^x+h)-e^x)/h. So I simplified this and got (e^x)* lim h->0 ((e^h)-1)/h. But I don't understand why and how ((e^h)-1)/h equals 1. Explain?
January 5, 2016

Math
find an equation for the line tangent to the graph of y=arccot(x) at x=1. I found that slope is -1/(1+x^2). I don't know how to evaluate arccot(1) to find y value.
January 5, 2016

Science
How much energy is needed to raise the temperature of 1500g of ice from -21.0 degrees Celsius to 113 degrees Celsius
January 5, 2016

Math
How do I use y=ne^kt formula?
December 23, 2015

Math
I know it's y=ne^kt. How do I use it? Quick answer.
December 23, 2015

Math
What is bacterial growth formula?
December 23, 2015

math
dwight made 13 shots at the basketball game on friday night and made a total of 30 points. she scored 5 more two pointers than three pointers. how many of each type of baskets did she make? Also make equations to help figure it out.
December 20, 2015

science
in addition to body structure and development, which of the following is used to classify animals? Speed, color, DNA or location
December 14, 2015

Math
I'm in sixth grade and I need help on 3(12w+8)+17+9w
December 8, 2015

Algebra
You travel with a boat 90 km downstream with the current in 6 hours and back upstream in 10 hours. Find the speed of the stream and the speed of the boat in still water, assuming that the motion is uniform.
December 7, 2015

chemistry
How to solve this problem in counting atoms 2 pb(CN)2
December 6, 2015

mathmatics
As I read this ((.8R)-5000).75=7500 solve for R, the initial amount. The amount spend is .2 of that R.
December 5, 2015

calculus
I just saw Prof Damon's response. I had the same thought, it was CalTech, Georgia Tech, or MIT. Review his outline first.
December 5, 2015

calculus
The satellite can see to the horizon. So along the surface, let the horizon be a distance r from the upcoming inmpact point. Then in basic geometry, one can reduce this to (d+y)^2=y^2+r^2 (with sherical trig, it is more complicated, but it at small d reduces to the simple ...
December 5, 2015

Mathematics
yes, of course. What you are ignoring is what units is the gradient. For instance 12375 nanometers/mile is a pretty level road. However, 12375meters/mile is a rather steep road.
December 5, 2015

Physics
The pressure goes from 290 to 102 kPa. V=800cm^3*290/102
December 5, 2015

Physics
see other post.
December 5, 2015

chemistry
what reaction?
December 5, 2015

chem.
how many g of Fe2O3 are produced if 3.00 g of Fe reacts?
December 2, 2015

Algebra
Mr. Pilgram needs fencing for his turkey coop. The perimeter is 240 yards. The length is 16 yards longer than the width. What are the dimensions? What is the area?
December 1, 2015

Chemistry
A substance undergoes a first-order decomposition. After 40.0 min at 500 degrees C, only 12.5% of the original sample remains. What is the half-life of the decomposition? If the original sample weighted 243 g, how much would remain after 2 hours?
November 30, 2015

math
a radiator holds 5 gallons. how much of the 30% antifreeze solution should be drained and replaced with pure water to reduce the solution to 9% antifreeze?
November 30, 2015

Social Studies
b;saratoga
November 23, 2015

science
A cube of density 12kg/m cubed is placed in a Eureka tub and releases 0.40m cubed of water. A) What is the edge length of the cube? B) What is the mass of the cube?
November 23, 2015

Chemistry
anyone have a clue how to do this?
November 21, 2015

Math
Megan has 9 yards of fabric. If she uses 5/8 of the fabric to make a quilt, how much fabric does she have left?
November 17, 2015

math
A simple random sample of 800 individuals provides 250 Yes responses.
November 17, 2015

health
hello can anyone answer these question please?
November 17, 2015

health
PLEASE HELP 1. One of your friends plays video games for at least six hours each day and gets upset when he has to eat dinner with his family. This is a sign of? a. An anxiety disorder. b. A phobia c. Bipolar disorder d. An impulse-control disorder 2. A phobia is an example of...
November 17, 2015

Science
my answer would have to be (A) Mrs.Sue do you agree?
November 13, 2015

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