Thursday
July 31, 2014

Posts by Alaina


Total # Posts: 31

Physics 2
Rearrange this equation to make b the subject and then, by replacing each term of the equation by its SI base units, express the units of b in SI base units. Eph=hct ___ b

physics
An swimmer of mass m is at a swimming pool. She climbs the steps to the diving board 4.0 m above the water. She jumps off the board, which enables her to rise a further 0.7 m before she begins her descent into the pool. At what speed does she enter the water? Due 5 jan 2013

Calculus-Check please?
Fabio stands atop his 16 foot ladder when he realizes that the ladder is slipping down the side of the building. He decides that the base of the ladder is moving away from the bottom of the building at a rate of 2 feet per second when it is 3 feet from the bottom of the buildi...

Derivatives
Oops I meant 4x^3 + x^2 - 12x + 1/ ((x^2+1)^3)

Derivatives
I have gotten so many different responses from mine on this question Can someone PLEASE write out the steps for me for this. Thanks f'(x)= 2x/(x^2+1) Find the second derivative. I get 4x^3 + x^2- 12x + 1

Asympotes, Data?-Bump
Thank you so much! I see what I should have done now. :P

Asympotes, Data?-Bump
If someone could help me on this, I'd appreciate it. f(x)= 2x/(x^2+1) Vertical: none Horizontal: none Minimum: x=-1 Maximum: x=1 Inflection Points: it seems like there are one or two, but i don't know how to factor f''(x)= 4x^3 + x^2 - 12x + 1 :/

Asympotes, Data?-Bump
Can someone help me with this? I have already solved it. Thank you.

Asympotes, Data?
f(x)= 2x/(x^2+1) Vertical: none Horizontal: none Minimum: x=-1 Maximum: x=1 Inflection Points: it seems like there are one or two, but i don't know how to factor f''(x)= 4x^3 + x^2 - 12x + 1 :/

Calculus-Solved - Incorrect
k(z)= 4z^4 - z(z+10)/((1+z)^2) derivative? 16z^3 + (3z^3 + 26z^2 + 42z + 10)/((1+z)^4) this is wrong though ^

Calculus-Solved - Incorrect
calculate delta y for f(x)= x^(3/2) with x= 4 and delta x= dx=0.1 delta y= f(x+delta x)- f(x) = f(4.1) - f(4) delta y= f(4.1)-8 f(x + delta x)= 8 + 3/2*x^(1/2)*0.1 = 8 + 0.15x^(1/2) = 8 + 0.30 = 8.30 delta y= 8.30 - 8 delta y= 0.30 but this is wrong. why is it wrong?

Calculus-Solved-Why is this wrong?
The Chain Rule- of course! Thank you very much Steve. :-)

Calculus-Solved-Why is this wrong?
use differentials to approximate the change in f(x) if x changes from 3 to 3.01 and f(x) = (3x^2-26)^10 derivative: 10(3x^2-26)^9 f(x+ delta x)= 1 + 10(3x^2-26)^9 * 0.01 = 1 + 10(0.01) <-- Substitute 3 for x = 1 + 0.1 = 1.1 delta y= 1.1 - 1 delta y= 0.1 but 0.1 is incorrect...

Calculus-Solved
This is also what I entered, yet it is wrong

Calculus-Solved
this is wrong. but can you explain how to correct it? thanks use differential of x^-1/3 to approximate solution to (1/cube root(7.952)) differential: df= -1/3(x^(-4/3)) * dx df= -1/48 * 0.0048 df= -0.001 0.500 - 0.001 = 0.499 but this is wrong.

math
need to know how to find the distrbutive property of 50x62,159= (50x )+(50x )+(50x100)+(50x50)+(50x9)

physics
if a bowling ball with a 22 cm diameter is half way submerged in a bucket of water, what is its mass?

math
What are the corner points for the feasible region given on the right? gg

trig
verify the identity. cos2 x - sin2 x = 1 - 2sin2 x the 2's next to the sin and cos on the right sides are powers.

Math
Liana has two toy planes. The first plane is on a string that is 12 feet long. The second plane can go in a circle that has a diameter of 22 feet. Which plane can make a larger circle in the air? Explain.

Physics
A loaded penguin sled weighing 81 N rests on a plane inclined at angle θ = 21° to the horizontal (Fig. 6-23). Between the sled and the plane, the coefficient of static friction is 0.24, and the coefficient of kinetic friction is 0.13. (a) What is the minimum magnitude...

Physics
The two blocks (m = 13 kg and M = 89 kg) are not attached to each other. The coefficient of static friction between the blocks is μs = 0.50, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force (F) required to kee...

business
Write a four paragraph answer, citing the text, to – Would you be willing to pay $500 today in exchange for $10,000 in 30 years? What would be the key considerations in answering yes or no? Would your answer depend on who is making the promise to repay? For purpose of com...

business
Analyze the following scenario: Duncombe Village Golf Course is considering the purchase of new equipment that will cost $1,200,000 if purchased today and will generate the following cash disbursements and receipts. Should Duncombe pursue the investment if the cost of capital ...

Geometry
If you have only 500 sq. feet of material and have to built a swimming pool, which shape will hold the most water. A cylinder, a cube or a rectangular prisim?

Algebra
Please help. I have tried many times to come up with something after reading the material but I am completely stumped. A cubic container, with sides of length, x inches, has a volume equal to x^3 cubic inches. The height of the container was decreased and the length was increa...

maths
perpendicular lines have opposite sign and reciprocal slopes from the original line you are given. put the first equation into proper form y= (-2x/3)+(5/3) the slope in this case is -2/3 Therefor a perpendicular line will have the slope 3/2.

integrated algebra
x-5 x+5 ___ = ___ 4 x+2 First you want to cross multiply (x-5)(x+2) = 4(x+5) Then use FOIL on the left hand side, and distribute the 4 on the right hand side to get X(squared)-3x -10 on the left = 4x+20 on the right subtract the 4x+20 on the right and left side you get x(squar...

Math
Find the area of each circle use 22/7 for pie. 1. r=14ft 2.d=3 1/3 yd

string theory
what is the string theory?

math
whatsz 4(x+5.1)-5x It is an algebraic expression.

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