04/10/17

-2tantheta=2√3
tan is a lot more difficult cos and sin how would I approach this problem
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04/10/17

If 6.42 g of water is produced,how many grams of oxygen Gas reacted?
1.Ammonia gas will react with oxygen gas to yield nitrogen monoxide gas and water vapor. Already got 1a and 1b just need 1c. 
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04/10/17

I am not sure how to go about solving this problem. Any help would be much appreciated.
16-oz cans of soup require a volume of 36 cubic inches. Materials for the can cost t $0.005 per square inch of surface area, determine minimum cost to construct a can that holds 36 cubic inches.
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03/30/17

Lagrange Multipliers
Find all of the extrema of g(x,y,z)=xyz on the surface z=e^(-x^2-y^2).
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03/21/17

How many grams of calcium must react with sulfuric acid , H2SO4 , in order to produce 6.5 liters of hydrogen gas ?
Ca(s)  + H2SO4(aq) --> CaSO4(aq) + H2(g)
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03/13/17

Differential Equations
3. Solve the following differential equation:y″+9y=0; y=3, y′=3 at x=Π/3   I've never seen a situation with, "y′=3 at x=Π/3"
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03/10/17

On aCartesianco-ordinatesystem.2identicalsmallspeakers,at(X =-3m, Y=8m), (X=3m, Y=-8m).Frequency85Hz.flywalked alongx-axisfrom x=-100m-x=100m.Howmany local max?
Spider laid her large plane web on a Cartesian co-ordinate system.She located 2 identical small speakers,at (X =-3m, Y=8m), (X=3m, Y=-8m).She drove both speakers with the same electrical... more
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03/10/17

Find area between two curves.
x3/4 + y3/4 = 1    x+y=1 
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02/24/17

Help setting up equation
A large auger can fill a grain bin in 5 h less time than a smaller auger. Together they fill the bin in 6 h. How long would it take the larger auger, by itself, to fill the bin? I know what to do,... more
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02/02/17

among the numbers-0,1,2,3,4,5,6,7,8,9 how many teams can be made so that it contains four numbers and the sum of them are divisible by 3.
NOTE THAT,the sequence doesn't matter.such that (1,2,3,4) and (1,3,2,4) are same
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01/29/17

algebra word problem
A certain number of cats (more than 1) had 161 kittens. Each cat had the same number of kittens(more than 1) and each cat had fewer kittens than there were cats. Find the number of cats
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12/05/16

what is sin^2 a-36 over sin^2 a +12 sin a +36 simplify with steps
thank you 
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12/05/16

4sin2(x) + 15sin(x) - 4 = 0
Use inverse trigonometric functions to find the solutions of the equation that are in the interval [0, 2π). You may enter an exact answer or round your solutions to four decimal places. (Enter your... more
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11/05/16

the optimal reception
A Dish TV satellite dish is the shape of a paraboloid. The dish is 36 inches wide, and 8 inches deep. How many inches should the receiver be located from the vertex for optimal reception? (round to... more
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11/04/16

Find equatin of the tangent line(implicit diff)
Hi, I just need to know if my answer is correct. Its asking to find the equation of the tangent line for : x2ey +yex =4 at (2,0)      Answer: y=-x/2 +1
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11/03/16

polynomial functions, yield, maximization
suppose it is known that if 65 mango trees are planted in a certain lot, the average yield per tree will be 1500 mangoes per year. for each additional tree planted in the same lot, the annual yield... more
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10/21/16

Find the area of the region that lies inside both curves. PLEASE HELP!
Find the area of the region that lies inside both curves.r = √3 cos θ, r = sin θ   Thank you in advance!
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10/18/16

Runner and his friends (Implicit Differentiation)
A runner sprints around a circular track of radius 100m at a constant speed of 7m/s.The runner's friend is standing at a distance 200m from the center of track.How fast is the distance between the... more
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10/07/16

A ball is thrown straight up . Taking the drag force into account , does it take longer for the ball to travel to the top of its motion or for it to fall back..
back down again ?     
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10/07/16

find the limit as (x,y) approaches (0,0)
given (x^3+y^3)/(x^2+y^2)
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09/30/16

A basketballs players attempts 20 shots from the field during a game...
A basketballs players attempts 20 shots from the field during a game. This player hits about 46% of these shots. What is the chance the player hits more than 15 shots? This information will help... more
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09/16/16

Limits...is my answer correct?
lim as x tends to pi/2  cotx/cscx.   (cos/sin)/(1/sin) = cosx = 0 
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09/05/16

You are dealt 4 cards. How many ways can you be dealt 2 jacks and 2 tens?
You are dealt 4 cards. How many ways can you be dealt 2 jacks and 2 tens?
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08/21/16

What is x equal to in this equation
1=sqrt(x+sqrt(x+sqrt(x+sqrt(x+... Using a substition, it seems you can get 1=sqrt(x+1), but that leads to x=0, which seems wrong when you plug it back into the original equation.
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08/18/16

What is the probability of you getting something that only has a 5% chance if you do it 14 times?
im looking for the % of the chance you will get that 5% of somethign to happen.
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