Wednesday
April 16, 2014

Posts by mathew


Total # Posts: 90

algebra
Okay thanks, Marissa is my sister.

algebra
To the nearest tenth of an inch, find the length of a diagonal of a square whose side length is 8 inches.

math
Thank you!

Calculus
Consider the curve given by y^2 = 2+xy (a) show that dy/dx= y/(2y-x) (b) Find all points (x,y) on the curve where the line tangent to the curve has slope 1/2. (c) Show that there are now points (x,y) on the curve where the line tangent to the curve is horizontal. (d) Let x and...

calculus
Evaluate each of the following. Show all your calculations.  f" (1/3) if f(x) = −2x^5 + 2x − 6

calculus
Evaluate each of the following. Show all your calculations.  f" (1/3) if f(x) = −2x^5 + 2x − 6

calculus
Evaluate each of the following. Show all your calculations. f" (−3) if f(x)  = 4x^3 − 3x^2 + 2x − 6

calculus (gr 12)
Evaluate each of the following. Show all your calculations. f′ (3/4)if f(x) = −3x^3 − 7x^2 + 4x − 11

calculus (gr 12)
Evaluate each of the following. Show all your calculations. f" (1) if f(X)  = −3x^2 − 5x + 7

calculus (gr 12)
Evaluate each of the following. Show all your calculations. f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8

calculus (gr 12)
Evaluate each of the following. Show all your calculations. f'(3) if f(x)  = x^4 − 3x

math
thanks

math
Disks of radius 4 cm are cut from a rectangular plastic sheet of length 84 cm and width 24 cm. How many complete disks can be cut out? Find (a) the total area of the discs out (b) the area of sheet wasted I did it but the answers on the back of the book do not match heres what...

math
Julia and Bianca both leave the college at the same time, but in opposite directions. If Bianca travels 9 mph faster than Julia and after 4 hours they are 140 miles apart, how fast is each traveling?

Calculus
I have no idea what to do with this problem. Please help me found the basic formula. When Apollo 15 astronaut David Scott dropped a hammer and a feather on the moon to demonstrate that in a vacuum all bodies fall with the same constant acceleration, he dropped them from about ...

Physics
A young woman named Kathy Kool buys a sports car that can accelerate at the rate of 4.77 m/s2. She decides to test the car by dragging with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 1.04 s before Kathy. If Stan moves wi...

calculus
Evaluate the integral from -4 to 4 of [x^3 sin(6x)] / [sin(5x)]dx

Math
If the value of $1 is 1.082431 in one year at 8 % compounded quarterly, what is the effective interest rate? (a)82.4% (b)8% (c)0.824% (d)8.24% (e)824.31%

Physics
Does the KE of a car change more when it accelerates from 27 km/h to 37 km/h or when it accelerates from 37 km/h to 47 km/h? 1. More information is needed. 2. No difference 3. From 37 km/h to 47 km/h 4. From 27 km/h to 37 km/h

English
Can someone edit this essay? Topic is "if given funding for a small engineering project, what would you do?" 250 word limit Millions of Americans purchase bottled water everyday simply because they don't like the taste of their own tap water. While most Americans...

English
its a college essay, the topic is "discuss your favorite place to get lost." 250 word limit

English
Can someone edit this essay? High school is a menacing, over-bearing world that hardly gives the average student to even stop and think. With the threat of a possible test or project coming up, combined with constant homework, it's easy to forget you're even still a ki...

Physics
It's absolutely not answer 1. could it be 3.??

Physics
A car drives up a straight hill at a constant speed of 60 kilometers per hour. A truck drives over the crest of the hill at a constant speed of 60 miles per hour. What is the net force on the car and on the truck? 1. both not zero 2. not zero; zero 3. both zero 4. zero; not zero

Physics
It would either be velocity or speed right? I would assume the weight nor the mass change.

Physics
An object traveling at a constant 20 m/sec in a circular path is changing its 1. velocity. 2. speed. 3. weight. 4. mass.

Math
A turtle crawls up a 12 foot hill after a heavy rainstorm. The turtle crawls 4 feet, but when it stops to rest, it slides back 1 1/2 feet. How many tries does the turtle make before it makes it up the hill?

Mathematics
If a brick weighs exactly as much as a 9-pound rock plus falf of another brick, what does a brick and a half weigh?

statistics
Using the Hypergeometric Rule C_3^10*C_3^(7 )= 10!/3!(10-3)! * 7!/3!(7-3)! = 120(35) = 4200

statistics
6. A geography student needs to take three 300- level and three 400- level geography classes next semester in order to graduate. If there are 10 300- level courses being offered and 7 400- level courses being offered, how many different schedules could the student have?

Honors Physics
I am still confused. For finalvelocity, where did you get 18?

Honors Physics
An automobile accelerates from rest at 1.3 m/s 2 for 19 s. The speed is then held constant for 23 s, after which there is an acceleration of −0.9 m/s 2 until the automobile stops. What total distance was traveled? Answer in units of km

Physics
I need help finding Vfinal. I have Vinitial, acceleration, and distance.

Physics
An automobile accelerates from rest at 1.3 m/s 2 for 19 s. The speed is then held constant for 23 s, after which there is an acceleration of −0.9 m/s 2 until the automobile stops. What total distance was traveled? Answer in units of km

Math
The price of a video system increased by 15% to $1,127.00. What was the price of the system before the increase? (a)$900.80 (b)$908.00 (c)$809.00 (d)$890.00 (e)$980.00 I need help with this problem and to be leaded towards the direction to find the right answer

algebra
can you write an equation for the line with slope 2/3 and y-intercept 5?

essay
So basically what you're saying is if a war breaks out in the country Canada is peacekeeping in, they'll feel obliged to participate?

essay
If anything, I feel that peacekeeping would only agitate other countries of Canada's presence, no?

essay
Thanks for the answer, but a few questions. Why exactly do developed democracies have said responsibility, and how does preventing wars protect Canada?

essay
So I have to write an argumentative essay on Canadians peacekeeping in foreign countries (Cyprus, Rwanda, Somalia, Bosnia, Croatia) and I have to argue whether Canadians should or shouldn't be peacekeeping in foreign countries. I have to have 3 main arguments, but I can...

algebra2/trignometry
in right triangle PQR,Q=90DEGREE,PQ=4 AND PR=7 WHAT IS ANGLE R TO THE NEARST TENTH OF A DEGREE

To Helper
Thanks a lot :)

To Helper
I had a problem to solve, and I dont get how to make equations from this problem. Mrs. Chans math class contributed 2 dollars and $1 coins to an earthquake relief fund. the number of $1 coins contributed was 8 less than 5 times the number of $2 coins contributed. if class rais...

Math ---Helper
Alright thanks, if you cant find them, just search my name in the searchbox and itll come up, thanks helper:D

Math ---Helper
Helper I really need ur help with some of my math questions down below, ur the best math tutor on here, need ur help please.

Necessary Math HELp
Wow helper:D Thanks a lot buddy, I really appreciate all the time you put to help me with my question. Yeah thanks to your explanation I get it, thanks a lot:) So here's how I substitute right? 2x+y = -5 2(-4)+y = -5 -8 +y = -5 Then I add 8 to both sides and get: y = -3 Th...

Necessary Math HELp
2x + y = -5 3x +5y = 3 How come I have to multiply by 5 to make the y variables cancel, like what does that mean? I dont get how ur supposed to multiply like where and how? Im really stuck right now, please help:(

Math
Mrs. Chans math class contributed 2 dollars and $1 coins to an earthquake relief fund. the number of $1 coins contributed was 8 less than 5 times the number of $2 coins contributed. if class raised total of 160 bucks, how many coins of each type was collected? it says i have t...

MATHH
Thanks a lot:D

MATHH
Solve by using elimination: 7x - 2y =3 2x +y = 4 ?????????????????

Lines and Slopes Math
A line is perpendicular to x+3y-4=0 and has the same y-intercept as 2x+5y-20=0. Find an equation for the line

Math
A line is parallel to 5x+2y-8=0 and has the same y-intercept as x+4y-12=0 Find an equation for the line.

:)
Which white person discussed or mentioned in Narrative Life is most important?

chemistry
the most common english unit of mass is the pound avoirdupois. what is one troy pound in kilograms and in pounds?

chemistry
use exponential notation to express the number 480 in 3 significant figures and 4 significant figures

chemistry
oxidation state of nitrogen. no2-

chemistry
oxidation state of nitrogen in n2h4

math
x^4-1/x^3=0

math
sin^-1(sin 7pi/6)

math
3999999999999999990000000000000055555555555555555555555555554459999999999999999999999888

language arts
unscamble the letter to find the name of a mall trrlnematitanaaon

cook
what is the A.S.A cuz i need to find out what it/they do

Math
Two small planes start from the same point and fly in the same direction. The first plane is flying 35 mph slower than the second plane. In 2 hrs, the planes are 530 mi apart. Find the rate of the slow plane.

Math
How would you do it if the planes were goin in the same direction?

4th grade math
50X1=50

X
i am a perscoll and the aswer for 25X25=625

ss
what is habeas corpus

civil war,ss
can you be specific

civil war,ss
list three ways governments could pay for the war.

civil war, ss
list three ways governments could pay for the war.

civil war, ss
Aside from battle casualties,what was a constant threat to soldiers?

geology
how old are these rocks please granite sandstone limestone mudstone and conglomerate many thanks.

Algebra 2 / Trig
Here is the problem that I'm having trouble with: Rewrite each series in a sigma notation and find its sum. 1+.09+.81+... I have no idea how I find the common difference or ratio in that one.

psychology 101
Jennifer is a 29-year-old administrative assistant married to Antonio, an Italian engineer, whom Jennifer met four years earlier while on a business trip for her marketing company. The couple now lives in Nebraska, where Antonio works for the county's transportation depar...

e-Commerce
Many Thanks. Much appreciated. Finished the homework now :P

e-Commerce
It was aimed at the normal shop type business. IE : Have a game store move online, making more profits and having a greater target audience. I'm just having a hard time finding the evidence to back this up. Many Thanks for the help.

e-Commerce
I'm finding it hard to find evidence that the growth of the internet has had a positive effect on businesses and organisations. Any advice would be greatly appreciated.

5th Grade Math Problem
That makes sense, thank you to everyone for your help.

5th Grade Math Problem
But it is 25 yards & 230 feet. I'm not sure I understand.

5th Grade Math Problem
I posted this a little while ago, but didn't see it. Sorry if it post twice. Each fire hose is 25 yards long. The fire station needs enough fire hoses to reach and fire hydrant to the farthest house, which could be up to 230 feet away. What is the minimum number of hoses t...

5th Grade Math Problem
I see, the second # keeps adding 3. 1=4 is 1+3=4 2=7 is 4+3=7 3=10 is 7+3=10 4=13 is 10+3=13 5=16 is 13+3=16 6=19 is 16+3=19 7=22 is 19+3=22 8=25 is 22+3=25 Thanks to all who answered.

5th Grade Math Problem
If 1=4, 2=7, 4=13, 5=16, 8=25, what is the pattern?

Math
Convert the velocity of 184.0 cm/s to km/h.

Health
Perfect answer. Thank you!

Health
What is wellness?

Health
What is physical health?

Health
What is social health?

Health
What is mental health?

Intl. Business
You are assigned the duty of ensuring the availability of 100,000 yen for the payment that is scheduled for next month. Considering that your company possesses only U.S. dollars, identify the spot and forward exchange rates. What are the factors that affect your decision of ut...

Algebra
almost done with Algebra...help! 2 3x – 6(2x – 0.055) = 10x + 0.515 I don't know what want but assuming your solving for x... 23x-12x-.33= 10x + 0.515 11x-.33= 10x + 0.515 x= 0.845 You need to clarify your post. Is that 23x or 3x (for problem #2 perhaps)? IF it i...

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