6,969 Answered Questions for the topic mathematics
12/06/21
Math - Ellipse Problem (Conic Section)
Madison and Crysh are visiting a whispering gallery. Each of them is standing at a focus and is 1 m. from the nearest wall. If the ceiling of the gallery at the center is 4m. high from the floor,...
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12/06/21
Math , Circle - Conic Sections
Find the equation of a circle with a y-intercept and x-intercept of -1 and which contains the point (0,2).
A 3.8 kg lead ball is dropped into a 2.5 L insulated pail of water initially at 20.0∘C.
A 3.8 kgkg lead ball is dropped into a 2.5 LL insulated pail of water initially at 20.0∘C∘C.If the final temperature of the water-lead combination is 26.8 ∘C∘C, what was the initial temperature of...
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A 7.6 −kg box having an initial speed of 4.5 m/s slides along a rough table and comes to rest.
A 7.6 −kg−kg box having an initial speed of 4.5 m/sm/s slides along a rough table and comes to rest.Estimate the total change in entropy of the universe. Assume all objects are at room...
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By what factor will the rms speed of gas molecules increase if the temperature is increased from 30 ∘C to 130 ∘C?
By what factor will the rms speed of gas molecules increase if the temperature is increased from 30 ∘C∘C to 130 ∘C∘C?
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A storage tank at STP contains 18.9 kg of nitrogen (N2).What is the volume of the tank?
A storage tank at STP contains 18.9 kgkg of nitrogen (N2)(N2).What is the volume of the tank?What is the pressure if an additional 14.2 kgkg of nitrogen is added without changing the temperature?
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Mathematics
12/05/21
Jasmine wanted to cut some ribbon into 4 pieces, each 3 2/5 feet long. How big a piece of ribbon did she need to start with?
Second part of the question.when she went to the fabric store, they only had enough ribbon for her to make 2 1/2 pieces that were as long as she wanted. How much ribbon did the fabric store have?
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Mathematics
12/04/21
How many gallons each of 30% alcohol and 5% alcohol should be mixed to obtain 25 gal of 17% alcohol?
How many gallons each of 30% alcohol and 5% alcohol should be mixed to obtain 25 gal of 17% alcohol?
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12/04/21
need help with chem question
What volume of 6.0 M acid is required for the preparation of 500.0 mL of 0.30 M solution?
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Mathematics
12/04/21
On a certain hot summer's day, 33 people used the public swimming pool. The daily prices are $1.59 for children $2.25 and for adults. The receipts for admission totaled $786.75
On a certain hot summer's day, 33 people used the public swimming pool. The daily prices are $1.59 for children $2.25 and for adults. The receipts for admission totaled $786.75How many children...
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12/03/21
How to solve this by chain rule?
If z=f(x,y), where x=rcosθ and y=rsinθ, show that∂2z /∂x2+ ∂2z /∂y2= ∂2z/∂r2 + 1/r2. ∂2z/∂θ2 + 1/r . ∂z/∂r
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The temperature in space given by T(x,y,z)=200xyz^2 . Find the hottest temperature on a unit sphere centered at the origin.(DO NOT USE LAGRANGE MULTIPLIERS)
Please don't use Lagrange Multipliers Method.
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Mathematics
12/03/21
Student 1 sold 8 small candy bars and 12 large candy bars =$34. Student 2 sold 16 sm candy bars and 20 large=$58.75. How much are lg and sm candy bars?
Mathematics
12/02/21
Eight more than a number is fifteen
Mathematics
12/02/21
Eight more than a number is fifteen
Mathematics
12/02/21
Jane's cousin Maggie is 3 times as old as Jane. After 4 years, the cousin will be 2 times as old as Jane. Let x= Jane's age Jane's age today = Maggie's age today=
Jane's cousin Maggie is 3 times as old as Jane.After 4 years, the cousin will be 2 times as old as Jane.Let x= Jane's ageJane's age today =Maggie's age today=
Mathematics Algebra
12/01/21
you pay 510 to rent a storage unit. the total cost is y includes an additional deposit a monthly fee of x. how much will you owe in five months
Mathematics
12/01/21
The larger of two integers is 3 more than 5 times the smaller integer. Find the two numbers if the smaller number subtracted from the larger is 31.
Mathematics Calculus
11/30/21
given the equation c(x)=0.4/x^2, where x is equal to distance in miles, find the instantaneous velocity at x=5 and x=11
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Mathematics Calculus
11/30/21
a person x inches tall has a pulse rate approximately given by the function y=610x^-1/2. find the instantaneous rate of change for pulse rates at x=40 and x=70.
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Mathematics Calculus
11/30/21
find the equation of the tangent line to the given curve at the specified point: y=sqrt x/x+1, (4, 2/5)
y=sqrt x/ x+1 is the equation for curvethe specified point is (4, 2/5)
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Mathematics Calculus
11/30/21
what is the velocity of an object dropped from a height of 150 meters when it hits the ground?
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Mathematics Calculus
11/30/21
consider the functions f(x) and g(x), for which f(0)=6, g(0)=7, f'(0)=11, and g'(0)=-4. find h'(0) for the function h(x)=f(x)/g(x)
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Mathematics Calculus
11/30/21
consider the function h(x), for which h(3)=13 and h'(x)=7. find f'(3) for the function f(x)=h(x)/x.
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Mathematics
11/30/21
find f(4) if f(x) = (1/2)x + 13
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