Friday

May 6, 2016
Total # Posts: 2,930

**math**

The area of a triangle is 45cm and the altitude is 5cm greater than the base. Find the length of the base.
*May 5, 2016*

**English**

Well idk because the dialogue that was given is "Every night i think back over all this i did that day were wrong...like putting that wet mop in mr.dussel's bed...and this thing now with mother. i say to myself, that was wrong. i make up my mind, im never going to do ...
*May 4, 2016*

**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*

**Math**

10/16 * 1/15 = 1/24
*March 19, 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*

**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*