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April 18, 2014

Homework Help: Health: First Aid

Recent Homework Questions About First Aid

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physics
initial momentum = .00626*344 = 2.15 2.15 = .00626 Vb1 + 1.205*.673 Vb1 = 214 m/s exiting first block bullet momentum entering second = .00626*214 = 1.34 1.34 = 1.584 v v = .846 m/s (a) (b)final = (1/2)(1.584)(.846^2) = .567 Joules initial = (1/2)(.00626)(344)^2 =370 ratio = ....
Thursday, March 27, 2014 at 1:47pm

physics
A 6.26-g bullet is moving horizontally with a velocity of +344 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Thursday, March 27, 2014 at 1:35pm

physics
A weight oscillates in a vertical motion according to the position function y(t)=-5cos t. Assuming t>=0 (greater than or equal to), when will the acceleration of the weight be zero for the first time?
Thursday, March 27, 2014 at 12:13pm

Technical writing
How to rewrite..Revise an explanation to eliminate density. Read the following dense paragraph and revise it to make it more coherent. You may separate the material into shorter paragraphs, use lists, and add or delete material. This information was part of a memo informing ...
Thursday, March 27, 2014 at 11:41am

statistics
9 people probability of man first = 5/9 then prob of woman = 4/8 so 20/72 for man then woman then probability of woman first = 4/9 then prob of man = 5/8 so 20/72 again add them 40/72 = .55
Thursday, March 27, 2014 at 11:27am

finance
Polycorp has a current dividend of $5.00 due tomorrow and is expected to pay a dividend $5.50 at the end of the first year. Its dividend is expected to grow at 8% pa for the following year. Dividends are then expected to grow at 4% pa for another two years. Then they are ...
Thursday, March 27, 2014 at 10:32am

Chemistry
How would you exactly start the first problem? My thermodynamic skills is a bit rusty. I am assuming I have to use ΔH°f under the given reaction..? But then..we barely covered ΔG° in class. Am I to use this equation, ΔG° = ΔH° - T ΔS&...
Thursday, March 27, 2014 at 1:31am

English
After watching a documentary about the environment on TV, I decided to start my own project,"Project Green Kid." Today was my first day as a Green Kid...... ---------------------------------- Do we have to use "a Green Kid"? What about "a green kid&...
Thursday, March 27, 2014 at 1:05am

FINANCE
A perpetuity with the first annual cash flow paid at the beginning of year 4 is equivalent to receiving $103,000 in 15 years’ time. Assume that the perpetuity and the lump sum are of equivalent risk and that j12 = 14.32% pa is the appropriate interest rate. How much is ...
Thursday, March 27, 2014 at 12:49am

FINANCE
Polycorp has a current dividend of $5.00 due tomorrow and is expected to pay a dividend $5.50 at the end of the first year. Its dividend is expected to grow at 8% pa for the following year. Dividends are then expected to grow at 4% pa for another two years. Then they are ...
Thursday, March 27, 2014 at 12:47am

physics
First you need to figure how much helium is the balloons. Each balloon's lift is reduced by the weight of the helium inside. Once you know how much each balloon weighs, subtract that from the lifting power of the displaced air, which is 1.225kg * .01716 * 9.8N/kg, since ...
Thursday, March 27, 2014 at 12:08am

pre calculus
A taxi company charges $2.00 for the first mile (or part of a mile) and 20 cents for each succeeding tenth of a mile (or part). Express the cost C (in dollars) of a ride as a piecewise-defined function of the distance x traveled (in miles) for 0 < x < 2
Thursday, March 27, 2014 at 12:07am

physics
Some say that the hot air balloons with which the Montgolfier brothers performed their first flight had a volume of 1700 cubic metres and could lift 780 kilograms (that includes the balloon, basket and payload). Assume that the balloon took off on a day when the sea level ...
Thursday, March 27, 2014 at 12:00am

Chemistry
Well, its definitely too late to help you, but I'll post this for the benefit of others. None of the listed atoms are definitely present, as there is no way to tell from the limited information. Likewise, we know from the chart of the seperation of cations that Ba2+ and ...
Wednesday, March 26, 2014 at 10:54pm

algebra
Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts
Wednesday, March 26, 2014 at 10:39pm

math
So I continued working where you left off and got y=0.5x+2.5 is that correct? or is it y=0.5x-2.5? I am pretty sure that it is the first one but I just wanna make sure.
Wednesday, March 26, 2014 at 10:22pm

Socials
What year was Canada's first railway : the Champlain and Saint Lawrence railroad built in?
Wednesday, March 26, 2014 at 10:09pm

Calculus
First things first: width --- s length ---- 2s 2s^2 = 800 s^2 = 400 s = 20 so the piece of metal is 20 by 40 let the side of the square to be cut out be x so the width is 20-2x the length is 40-2x the height is x Volume = x(20-2x)(40-2x) = 2x^3 - 120x^2 + 800x d(Volume)/dx = ...
Wednesday, March 26, 2014 at 10:05pm

physics
A car moving with an initial speed v collides with a second stationary car that is 50.7 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 33.2 percent of the original speed. Calculate the final speed of the second ...
Wednesday, March 26, 2014 at 7:48pm

Math
If Mike has 8 dimes and 6 pennies in his pocket. If he randomly selected one coin and then a second coin without replacing the first, what is the probability that both coins were dimes?
Wednesday, March 26, 2014 at 7:41pm

LA PLS HELP!!!!! (check my work)
1. What causes Brer Lion to be tied to a tree? (1 point) >>>his fear<<< his strength his obedience to Brer Rabbit 2. Which of the following is a reasonable prediction about what will happen after this story is over? (1 point) Brer Lion and Brer Rabbit will ...
Wednesday, March 26, 2014 at 7:04pm

statistics
18 + 24 = 42 first black sock = 24/42 second black sock = 23/41 product = 24/42 * 23/41 = .321
Wednesday, March 26, 2014 at 6:07pm

*****Help Statistic
Imagine taking a 10-question true or false exam. You randomly guess at each question. Don't do any calculations, just tell me your first impressions a). Is this a binomial setting? b) How many question do you think you would get correct? c). How surprised would you be if ...
Wednesday, March 26, 2014 at 4:11pm

chemistry
Second try. My first one was deleted. 32.9150g = mass dish + Fe -30.7310g = mass empty dish ------------- +2.1840g = mass Fe %Fe = (mass Fe/mass Fe sample) = 2.1840/5.000)*100 = ? = approx 43.68% Note: I feel compelled to point out that this is a lousy procedure BECAUSE when ...
Wednesday, March 26, 2014 at 3:23pm

Health and Physical
I agree with your first four answers. I don't know about 5. Be sure to check your book.
Wednesday, March 26, 2014 at 1:49pm

math
period of first = 2π/(12π) = 1/6 period of 2nd = 2π/(18π) = 1/9 1/3 is a factor of both, so the period = 1/3 verification: http://www.wolframalpha.com/input/?i=10+​sin%2812+pi+t%29%2B4+cos%2818+pi+t%29
Wednesday, March 26, 2014 at 1:27pm

propability
there are 40 tags numbered 1 through 40 in a bag. what is the probability that Glenn will randomly pick a multiple of 5 and than a multiple of 9 without replacing the first one?
Wednesday, March 26, 2014 at 11:59am

Maths
if you mean the sequence in your previous problem a = -5 -123 = 17 - 5n n = 28 or 28 terms before our first term which was 17
Wednesday, March 26, 2014 at 11:07am

Maths
4x+1,2x+4 and x+3 are first three terms of arithmetic sequence determine the value of x
Wednesday, March 26, 2014 at 10:47am

Language arts help!!
go to open study josh they always help and i got almost alll my answers right this web site is for side use go to open study first plus its funner talking to more people.
Wednesday, March 26, 2014 at 10:40am

University Chemistry (first year)
Hi I am 10. RP pls. Kimochi
Wednesday, March 26, 2014 at 3:39am

University Chemistry (first year)
Hi I am 10. RP pls.
Wednesday, March 26, 2014 at 3:36am

Math
Homing pigeons avoid flying over large bodies of water, preferring to fly around them instead. Assume that a pigeon released from a boat 1 mile from the shore of a lake flies first to point P on the shore and then along the straight edge of the lake to reach its home at L. If ...
Wednesday, March 26, 2014 at 12:07am

chemistry
The rate constant of a first-order reaction is 4.25 x 10^-4 s^-1 at 350 Celsius. If the activation energy is 103 kJ/mol, calculate the temperature at which its rate constant is 8.75 x 10^-4 s^-1.
Tuesday, March 25, 2014 at 11:21pm

calcules
Just noticed that both Damon and I answered a very similar question in the first of the Related Questions below http://www.jiskha.com/display.cgi?id=126​8848081 I suggest you print it out , and change the numbers, and units.
Tuesday, March 25, 2014 at 11:14pm

Science asap thankies :)
What would a permanently magnetic substance be called? I cant remember what my teacher called it, it was a short first word then magnet.. sorry and thanks!
Tuesday, March 25, 2014 at 10:39pm

Chemistry
The degradation of CF3CH2F (an HFC) by OH radicals in the troposphere is first order in each reactant and has a rate constant of k=1.6×108M−1s−1 at 4∘C. If the tropospheric concentrations of OH and CF3CH2F are 8.1×105 and 6.3×108 molecules ...
Tuesday, March 25, 2014 at 10:03pm

chemistry
What is your problem with this bekah? For a you must have worked a hundred of weak acids problems with a known starting molarity. At first glance it looks like 2 is a buffer problem that can be solved with the Henderson-Hasselbalch equation.
Tuesday, March 25, 2014 at 9:30pm

math
It is two functions and there are three regions where they cross the x axis Any x between the curves on the x axis should work. However the third region on the right has too big an x so the width will come out negative however when I tested in the middle of the first two ...
Tuesday, March 25, 2014 at 8:55pm

algebra
the plate is only 25 cm wide so the big x interval will not work I got results in the middle of the first two intervals though
Tuesday, March 25, 2014 at 8:40pm

ALGEBRA
I set them equal to 1512 and then to 2176 THEN I subtracted 1512 from the first both sides AND I subtracted 2176 from the second both sides PLEASE calm down and think
Tuesday, March 25, 2014 at 8:32pm

algebra
you need to solve two inequalities: x(40-2x)(25-2x) > 1512 x(40-2x)(25-2x) < 2176 x(40-2x)(25-2x) = 4x^3 - 130x^2 + 1000x So, you have to solve 4x^3 - 130x^2 + 1000x - 1512 > 0 4x^3 - 130x^2 + 1000x - 2176 < 0 a little synthetic division shows that the first has a ...
Tuesday, March 25, 2014 at 8:31pm

How-To Essay Evaluation (Writeacher)
You need to have at least an introductory sentence and a conclusion sentence!! When I start reading your first paragraph, I have A VERY MUDDY IDEA what you're really writing about. Here's why ~~> We don't shoot bows! We use bows to shoot arrows!!
Tuesday, March 25, 2014 at 6:28pm

Math
The first thing you do is put 2 in the equation as x. This is what is looks like: 3(2)/4 Next, you multiply 3 and 2 to get 6. This is what the equation looks like now: 6/4 Finally, you simplify the fraction to get your final answer. 6 divided by 2 is 3, and 4 divided by 2 is 2...
Tuesday, March 25, 2014 at 5:49pm

How-To Essay Evaluation (Writeacher)
What do you think? "In order to shoot a bow accurately, the first step to take is to determine your dominant eye (the eye from which a person prefers to receive visual input). While this action might have been what you least expected, by determining your dominant eye, you...
Tuesday, March 25, 2014 at 4:20pm

Math
first tell me what you got for your inverse matrix
Tuesday, March 25, 2014 at 11:07am

Puncuation
First, cut out all unnecessary words. Then read up on how to use a semicolon correctly. And make sure you are 100% sure of the meaning of every word you have used and that it's being used correctly.
Tuesday, March 25, 2014 at 12:18am

American History
If I understand your question correctly, the Nazi Party first stressed jobs, prosperity, and the importance of Germany.
Monday, March 24, 2014 at 9:49pm

literacy
The first sentence or two must have the five W's -- who, what, when, where, why -- and maybe how. The rest of the report gives the details.
Monday, March 24, 2014 at 9:15pm

Physics
A box of mass 50.0 kg is connected to a second box with a mass of 54.0 kg. Both are sitting on a horizontal surface and the coefficient of kinetic friction between the surface and each box is 0.51. If the second box is pulled away from the first box with a force of 605.8 N, ...
Monday, March 24, 2014 at 8:51pm

Physics
A railroad car with a mass of 12000 kg collides and couples with a second car of mass 18000 kg that is initially at rest. The first car is moving with a speed of 9 m/s before collision. If external forces can be ignored, what is the final speed of the two railroad cars after ...
Monday, March 24, 2014 at 8:06pm

math
Mr. Gonzalez's sixth grade class is putting on a play. He reserved the first 6 rows of the auditorium for family members and friends of the 24 students in his class. If each row contains 17 seats and each student can invite the same number of guests, how many guests can ...
Monday, March 24, 2014 at 7:16pm

math
Mr. Gonzalez's sixth-grade class is putting on a play. He reserved the first 6 rows of the auditorium for family members and friends of the 24 students in his class. If each row contains 17 seats and each student can invite the same number of guests, how many guests can ...
Monday, March 24, 2014 at 6:48pm

Algebra 1 Answer Evaluation
check by expanding your answer, you will see that the first one is wrong you probably meant a^3 - 5a^2 + 2a -10 , says by grouping, so do that ... = a^2(a-5) + 2(a-5) = (a-5)(a^2 + 2)
Monday, March 24, 2014 at 6:09pm

Social Studies :)
2. The only Native Americans who successfully stayed on their land were the (1 point) Seminole. *** Sauk. Cherokee. Fox. 3. What act did the United States government pass in order to be able to move Native Americans off their land into Indian Territory? (1 point) Native ...
Monday, March 24, 2014 at 4:36pm

math
Rosy has been jogging for 3 weeks. In the first week She jogged 3 days each for 4/6 of an hour. During week 2 she jogged for 3/4 of an hour on 2 days. In week 3 she jogged 4 days each for 3/5 of an hour . WRITE one expression that would show the total time she spent jogging in...
Monday, March 24, 2014 at 4:12pm

math
Try converting to fractions. Then you have 11/8 14/8 17/8 23/8 I think the last one should be 2 1/2, since you added 3/8 the first two times. If it really is 2 7/8, ya got me. Or, it could be that you just missed a term of 2 1/2 in between 2 1/8 and 2 7/8.
Monday, March 24, 2014 at 3:35pm

math
The 6th grade classes have started a contest to collect cans for recycling. The first class to reach 500 cans will win. The chart below shows the two classes in the lead. How many cans does each class have left to meet their goal? show the work . find how much they collected. ...
Monday, March 24, 2014 at 3:17pm

MATH
there are 400 students at smith Elementary school 1/4 of the students are in fourth and fifth grade, 1/10 of the students are in grade 3, 2/8 are in second grade and 2/5 are in first grade . How many kids are in each grade? (4th and 5th have an equal amount)
Monday, March 24, 2014 at 3:14pm

math
YES The 6th grade classes have started a contest to collect cans for recycling. The first class to reach 500 cans will win. The chart below shows the two classes in the lead. How many cans does each class have left to meet their goal? show the work . CHART CLASS 1 WEEK # ...
Monday, March 24, 2014 at 3:08pm

math
The 6th grade classes have started a contest to collect cans for recycling. The first class to reach 500 cans will win. The chart below shows the two classes in the lead. How many cans does each class have left to meet their goal? show the work .
Monday, March 24, 2014 at 2:21pm

Statistics (?)
Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. Standard deviation = square root of variance 95% = mean ± ...
Monday, March 24, 2014 at 1:18pm

math
-2x+6y=-26 8x+6y=-16 Multiply first equation by 4, then add the two equations. -8x + 24y = -104 30y = -120 You should be able to work it from here.
Monday, March 24, 2014 at 1:09pm

Physics
Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isochoric heating until it gains 5363 J and its pressure is 2.92 105 Pa. In the second step it is subjected to isobaric ...
Monday, March 24, 2014 at 12:42pm

physics
A car moving with an initial speed v collides with a second stationary car that is 46.0 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 37.7 percent of the original speed. Calculate the final speed of the second...
Monday, March 24, 2014 at 9:45am

computer science
a) What is the largest positive number that can be represented in 12 bits using one’s complement? Represent the number in bits and decimal as well. Assume the first bit is the sign bit. (2 marks)
Sunday, March 23, 2014 at 11:47pm

physics
A bicyclist wants to make it from one building to the next. The first building he is standing on is 20 m tall. The building he wants to reach is 12 m tall. He is moving at 4 m/s and the gap between both buildings is 5 m. Will he make it? Please just show me how to break down ...
Sunday, March 23, 2014 at 10:35pm

physics
train car are coupled together by being bumped into one another. suppose two loaded train cars are moving toward one another, the first having a mass of 150000 kg and velocity of 0.30 m/sand the second havin a mass of 110000 kg and a velocity of (-0.12 m/s). what is their ...
Sunday, March 23, 2014 at 9:05pm

physics
Assuming the Earth's magnetic field averages about 0.50×10−4 T near Earth's surface, estimate the total energy stored in this field in the first 15km above Earth's surface. The radius of Earth is 6380 km.
Sunday, March 23, 2014 at 8:15pm

math
man, ya gotta check your answer. It does not fit the first equation. y = x-3, so x + 3(x-3) = 6 4x = 15 x = 15/4 y = 3/4
Sunday, March 23, 2014 at 8:14pm

Math
If you rearrange things a bit, you get x - 6y = 2 3x - 18y = 4 which is the same as x - 6y = 2 x - 6y = 4/3 The lines are parallel, so there is no intersection, and no solution to the equations. Your answer fits the 2nd equation, but not the first.
Sunday, March 23, 2014 at 8:11pm

physics
find the final speed at the end of the first 15 m... vf^2=2ad where a=force/mass solve for Vf. Then use that as Vi here vf^2=vi^2+2ad where a= (F-mu*110g)/mass and d is again 15m solve for vf.
Sunday, March 23, 2014 at 7:57pm

physics
52.(52G) A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350 N. For the first 15 m the floor is frictionless, and for the next 15 m the coefficient of friction is 0.30. What is the final speed of the crate?
Sunday, March 23, 2014 at 7:39pm

chemistry
1. When performing this experiment, a student mistakenly used impure KHP to standardize the NaOH solution. If the impurity is neither acidic nor basic, will the percent by mass of acetic acid in the vinegar solution determined by the student be too high or too low? Justify ...
Sunday, March 23, 2014 at 3:05pm

Algebra II
double the 2nd c - 6d = 16 add to the first 3c = 30 c = 10 back into the 1st 20 + 6d = 14 6d = -6 d = -1 c = 10 , d = -1
Sunday, March 23, 2014 at 2:40pm

scholarship essay excerpt
Inviting your reader to a pity party is not a good way of demonstrating your worth to a college admission's officer. I'd omit the first three-fourths of this paragraph. If you feel you need to mention these family disasters, summarize them in one or two sentences.
Sunday, March 23, 2014 at 1:08pm

Chemistry - check answers
1) Which element has the largest first ionization energy? A) Rb, B) Fr, C) K, D) Na, E) Mg Answer: E 2) Which has the highest electronegativity? A) Na, B) Cs, C) Si, D) Te, E) Cl Answer: E 3) In which of the following are the bonds arranged in order of increasing polarity? A) ...
Saturday, March 22, 2014 at 8:22pm

Algebra
Just noticed a typo (sticking 3 key) <taking the first 3 I got: a = 5.5 , b=-12.5 , c = 12> should say: taking the first 3 I got: a = 53.5 , b=-12.5 , c = 12 btw , I did not show how I solved those 3 equations in 3 unknowns, I used a webpage for that http://www.1728.org/...
Saturday, March 22, 2014 at 5:19pm

Algebra
I did the usual analysis and found the first differences to be 145, 250, 358, and 465 and the second differences to be 105, 108, and 107 which appear to be relatively constant at appr 106, so I suspect a quadratic. let N = ad^2 + bd + c, where d is the number of days, and N is...
Saturday, March 22, 2014 at 5:15pm

college physics 2
The first off center maximum occurs when the path lengths to the screen from the two slits differs by one wavelength. If you move the slits closer together, the angle to the screen must increase to get path lengths a wavelength different. Therefore is you decrease the spacing ...
Saturday, March 22, 2014 at 1:18pm

Math
If you have consecutive values of x, like in both your cases, in general if the first differences in the y's are constant, you have a linear function if the 2nd differences in the y's are constant, you have a quadratic function, (as your case above) if the 3rd ...
Saturday, March 22, 2014 at 12:52pm

Math
I took first differences and got 2.8 , 8.4 , 14, and 19.6 second differences yielded: 5.6 , 5.6 , 5.6 which tells me that the relationship is a quadratic function. so let y = ax^2 + bx + c, giving us 0 = c 2.8 = a + b + c 11.2 = 4a + 2b + c we know c = 0 so if we double the ...
Saturday, March 22, 2014 at 12:09pm

physics
Three identical uniform meter sticks are placed on the floor. The first stick lies along the y axis from y = 0.320 m to y = 1.32 m. The second stick lies along the x axis from x = 0.330 m to x = 1.33 m. The third stick is positioned so that one end is on the x axis at x = 0....
Friday, March 21, 2014 at 10:01pm

Math
The number of tickets sold each day for an upcoming performance of Handels Messiah is given by N(x)=-0.4x^2+11.2x+13, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
Friday, March 21, 2014 at 9:41pm

Chemistry-Repost for DrBob222
Well, it's this way. If you read the problem, as I did, the first line says you want to prepare 500 mL of a buffer. When I read that I quit reading and wrote instructions for preparing 500 mL of said buffer. You read the whole problem, which I should have done, and saw the...
Friday, March 21, 2014 at 4:24pm

Economics HELP PLEASE!!!!
Can someone please help me with a hint to solve this problem?? I'm struggling really hard with this. "Consider an oligopolistic market with two firms. Each of them produces using a cost function given by c(q)=q^2. The aggregate demand in the market is given by 1000&#...
Friday, March 21, 2014 at 2:33pm

Economics problem HELP!!!
Can someone please help me with a hint to solve this problem?? I'm struggling really hard with this. Thanks!!! "Consider an oligopolistic market with two firms. Each of them produces using a cost function given by c(q)=q^2. The aggregate demand in the market is given ...
Friday, March 21, 2014 at 2:31pm

Algebra
1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 4) The cheerleading squad is having a bake sale. ...
Friday, March 21, 2014 at 2:27pm

Chemistry-Repost for DrBob222
You can use the mg directly in the ratge equation. And I made a typo. That first line should have read, "Is that C60O3
Friday, March 21, 2014 at 2:22pm

Statistics
Find the means first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. Standard deviation = square root of variance Z = (mean1 - mean2)/...
Friday, March 21, 2014 at 1:35pm

scholarship essay edit
can someone edit this? Throughout my life’s journey, I have come to attain two true passions - the first one being English studies. Since the very dawn of childhood, I have been known to bleed the calligraphic content of Gary Soto's brilliant poetry and breathe the ...
Friday, March 21, 2014 at 1:23pm

Language Arts
I agree with your first and third answers, but I see more than one in the second set of answers that could be considered an appeal to emotions.
Friday, March 21, 2014 at 1:00pm

Math - PreCalc (12th Grade)
First of all , I am sure you meant: s(t) = 2t^2 + 3t s(2) = 2(4) + 3(2) = 14 s(4) = 2(16) + 3(4) = 44 total distance = 44-14 = 30 m total time = 4-2 seconds = 2 seconds average velocity = total distance / total time = 30 m/2 seconds = 15 m/s
Friday, March 21, 2014 at 12:43pm

Math - PreCalc (12th Grade)
The function f(x) = 6x + 5 is defined over the interval [-1, 4]. If the interval is divided into n equal parts, what is the value of the right end point of the first rectangle?
Friday, March 21, 2014 at 11:42am

Chemistry-Repost for DrBob222
You said you understood part a. That's the initial amount of MgF2 dissolved in the 1L of water. You should have done this for part a. ............MgF2 ==> Mg^2+ + 2F^- I...........solid.....0.......0 C...........solid.....x.......2x E...........solid.....x.......2x Ksp...
Friday, March 21, 2014 at 11:20am

Chemistry-Repost for DrBob222
The reaction OH- + NH4+ = H20 + NH3 is kinetically first order in both reactants' concentrations. The rate constant is 2e10 1/M s. If 50 ml of .01 M NaOH is mixed with 50 ml of .01 M NH4CL, find the time required for the OH- concentration to reach 1e-4 M. Your answer: It ...
Friday, March 21, 2014 at 10:39am

algebra
no way any factorials could be involved in such a sum There are n terms, so we have na + 0+1+2+...+(n-1) We all know the sum of the first n-1 integers is (n-1)n/2, so the final sum is na + n(n-1)/2 = n(a+n-1)/2
Friday, March 21, 2014 at 5:55am

Math ~ Check Answers ~
3. In the following list of data, find the range: 21, 28, 31, 35, 39, 43, 51, 60. 35 37 39****** 40 Pat recorded the weights of the first 10 fish she caught and released at Mirror Lake this season. The weights were 8 lb, 6 lb, 9 lb, 6 lb, 7 lb, 5 lb, 7 lb, 6 lb, 23 lb, and 6 ...
Thursday, March 20, 2014 at 10:19pm

Math ~ Check Answers ~ASAP
3. In the following list of data, find the range: 21, 28, 31, 35, 39, 43, 51, 60. 35 37 39****** 40 Pat recorded the weights of the first 10 fish she caught and released at Mirror Lake this season. The weights were 8 lb, 6 lb, 9 lb, 6 lb, 7 lb, 5 lb, 7 lb, 6 lb, 23 lb, and 6 ...
Thursday, March 20, 2014 at 10:08pm

research
You may have to search and research, but once you learn some good sources and methods, you should have success. In addition to searching on the Internet, you also need to make best friends with the reference librarian(s) in your local or college library. Libraries these days ...
Thursday, March 20, 2014 at 8:36pm

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