11/15/15

Find the limit. Use l’Hospital’s Rule where appropriate. If there is a more elementary method, consider using it. If l’Hospital’s Rule doesn’t apply, explain wh
Find the limit. Use l’Hospital’s Rule where appropriate. If there is a more elementary method, consider using it. If l’Hospital’sRule doesn’t apply, explain why.   lim (x --> 0+)   ... more
Follows • 3
Expert Answers •2

11/15/15

Calculus Natural Logarithms
Find f'(x) given f(x) = ln(√(2x+9)(9x-3)). Note*both functions are under the square root. I believe the problem needs to be set up like this = ln(2x+9)1/2(9x-3)1/2 and then = ln(2x+9)1/2 +... more
Follows • 3
Expert Answers •2

11/15/15

I need to find the domain and range of for f(y) = 2/(c^2 + 3c)
I need to find the domain and range of for f(y) = 2/(c^2 + 3c)   I know how to find the domain  its where c^2 + 3c would = 0   so it's not valid for  c=-3   but how do I explain the range... more
Follows • 3
Expert Answers •2

11/14/15

CALC - A model used for the yield of an agricultural crop as a function of the nitrogen level in the soil (measured in appropriate units) is
A model used for the yield of an agricultural crop as a function of the nitrogen level in the soil (measured in appropriateunits) is :   Y = (kN) / (1 + N2)   where k is a positive constant.... more
Follows • 2
Expert Answers •1

11/14/15

Find f when f"(x) = x^-2, x > 0, f(1) = 0, f(2)
Find f when f"(x) = x^-2, x > 0, f(1) = 0, f(2)   I know I need to find the antiderivative twice but my answer is no where near what's in the book (see below for answer).     ANSWER:... more
Follows • 3
Expert Answers •2

11/11/15

Physics-trig question velocity of a plane etc HELP
A plane flies due north (90° from east) w/ a velocity of 110 km/h for 3 hours.A steady wind blows southeast at 35 km/h at an angle of 320 degrees from due east during this time. After 3 hours,... more
Follows • 2
Expert Answers •1

11/11/15

Percentage word problem
 A store sells CDs at 20% off the displayed price. The store buys copies of a CD for $12 each. If the store owner wants to make a 10% profit on the CDs, what price should she list for each CD?
Follows • 5
Expert Answers •3

11/11/15

What is the integral equal to? #2
Suppose f(x) is the greatest integer function, i.e., f(x) equals the greatest integer less than or equal to x. So for example f(2.3)=2, f(4)=4, and f(6.9)=6. Find  ∫^7  f(x)dx.  3   What is the... more
Follows • 3
Expert Answers •2

11/10/15

Cos(tan^-1(-3))
How do I do it
Follows • 2
Expert Answers •1

11/10/15

a:b as c:a. If a = 1, what is b?
I realllllllly neeeeeeeeeeeeeeeed help with this equation. It's extremely important.
Follows • 2
Expert Answers •2

11/09/15

Angular Velocity
In the early stages of solar-system formation, an approximately spherical cloud of gas and dust (radius 10^15 m, mass 10^31 kg) gradually contracts to form a much smaller, denser disk of material... more
Follows • 2
Expert Answers •1

11/09/15

collisions and kinetic energy
A 1 kg lump of clay moving through space at 2 m/s collides with a second 1 kg lump of clay at rest. if the lump sticks together what portion of the original kinetic energy is lost to internal... more
Follows • 2
Expert Answers •1

11/09/15

Word problem
Fountain shoots water from its base 25 ft in the air up to 50 ft into air. If the water takes 7 seconds to fall back to the ground from its highest point, write a function that models the water's... more
Follows • 3
Expert Answers •2

11/08/15

Maximum volume based on radius.
The surface area of a cylinder is 200 units squared. Find the radius so that the volume is maximized.
Follows • 2
Expert Answers •1

11/08/15

Can you PLEASE help me with CHEM? Using bond energies to determine the enthalpy of reaction for the following reaction???
I am kind of confused with this, so if you could show your work so I understand how you get the answer, I would appreciate it more than you know!!!Use the Table of Bond Energy Terms (BE), to... more
Follows • 3
Expert Answers •2

11/08/15

Finding the inverse of a function.
sin(alpha) = 0.195946 implies alpha = tan(beta) = 0.818491 implies beta =sec(theta) = 2.5913 implies theta =   Find the following to one decimal place. Show me how you to get the answer
Follows • 2
Expert Answers •1

11/08/15

word problem for university level grade 12 physics
On a two lane highway where the posted speed limit is 80 km/h, a car of mass "mc" and an SUV of mass "ms" have a head-on collision. The collision analysts observe that both vehicles come to a stop... more
Follows • 3
Expert Answers •2

11/08/15

Findig the inverse of a trigonometric function.
Find the inverse of the function and also the domain. f(x) = 12sin(14x)
Follows • 3
Expert Answers •3

11/06/15

derviatives
If f(x)=x^xln(2x−7), then f′(x)=x^xln(2x−7)g(x), where g(x) equals what?
Follows • 3
Expert Answers •2

11/03/15

Thermal Expansion
Steel wire of radius 9 mm is cooled from 21° C to 0° C. How much tension would you have to apply to the wire to stretch it back to its original length? Young's modulus for steel is 2.0 1011 N/m2,... more
Follows • 2
Expert Answers •2

11/02/15

Please Help!!! Maximize...
Maximize  f = 3x + 2y subject to  x + y ≤ 4 7x + 3y ≤ 21 x,y ≥ 0   Corner Points:          f = 3x + 2y     Max = _____ at x =_____ and y =_____
Follows • 2
Expert Answers •1

11/02/15

Can you please help me??! Chemistry problem: Identifying a solution containing ions of an unknown element X based on the results of three tests? Multiple choice
A solution containing ions of an unknown element X is divided into 3 samples. The following tests were performed on samples of the solution. Sample Test Observation1 Add H+ (aq) No Change2 ADD... more
Follows • 2
Expert Answers •1

11/01/15

What was the cannonball's final speed when it hit the soldier?
If a cannonball was shot off 20 meters away from a soldier, and it's acceleration was 5m/s^2. What was the cannonball's final speed when it hit the soldier?   Hint: The Initial speed was... more
Follows • 3
Expert Answers •2

10/28/15

linear equations
You go to a restaurant with a $20 bill to spend. You know that you'll pay 9% in sales tax andyou want to leave your waitress with at least a 15% tip. What is the most expensive meal thatyou can eat?
Follows • 2
Expert Answers •2

10/28/15

Can Someone help me with these geometry questions about regular polygons?
1.) Find the lengths of the apothem and the radius of a regularhexagon whose sides have length 6 cm. 2.) Find the lengths of the side and the radius of anequilateral triangle whose apothem’s... more
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.