03/15/17

Use differentials to approximate
Use differentials to find the approximate amount of copper used in the four sides and bottom of a rectangular copper tank that is 6 feet long, 4 feet wide and 3 feet deep inside if the sheet of... more
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03/12/17

Algebra two
What expression would be equivalent to 40x^7y^2/-8x^6y^4?
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03/07/17

The height of the cover of a speaker cabinet exceeds twice its width by 10 cm. If the area of the cover is 2100 cm , find its dimensions.
Must use quadratic formula 
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03/05/17

the specific heat of water is c=4186 j/kg.k. If the mass of the water was 0.2kg, how much energy did this cup lose over 300 seconds?
Q=mcΔT
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03/04/17

Use the following data: 11, 14, 15, 19, 10. What's the standard deviation?
 Round your answer to the tenths place.
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02/07/17

Integration in calculus
Find or evaluate the integral by completing the square. (Round your answer to three decimal places.) Boundary is from 2 to 3.    ∫ (2x-3)/ (√(4x-x2) dx
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02/07/17

Calculus. How to solve integrals?
Find the indefinite integral   ∫ t/(t4+49) dt
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02/05/17

Calculus simplyfing expressions
Simplify the expression   tan (sin-1 x)
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02/05/17

Derivatives calculus
Find the derivative of the function   y=3 tan-1 (x-(√1+x2))   1+x2  is  the square root   
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02/05/17

Derivatives calculus
Find the derivative of the function f(x) = cos-1(sin 2x)     Thanks  
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02/05/17

Find a limit expression for the area under f above (1,3)
f(x)= (2x)/(x^2+1) [1,3] 
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01/23/17

the demand function for a firm is given as P=60-0.5p and the supply function is p= 10+Q
1. find the equilibrium price and quantity. 2.calculate the consumer surplus and producer surplus at equlibrium
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01/18/17

Find Partial Derivative
Find the partial derivative of V = straight pi r2 h with respect to h. Give your answer in terms of a numerical value, using r = 12.2 and h = 68.6. Do not use scientific notation or include units.
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11/28/16

Nature Of Science And Physics 3
What is the height in meters of a 7 foot 2.0 inch tall person? m
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11/21/16

Kyle wants to jump from a cliff that is 21.0 m tall.Rocks stick out 9.50 m from the base of the cliff.What must his horizontal speed be to clear the rocks?
Kyle wants to jump into the water from a cliff that is 21.0 m tall. There are rocks that stick out 9.50 m from the base of the cliff. What must his horizontal speed be in order to clear the rocks?
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11/18/16

optic science
Q monochromatic light is refracted from air into a medium of refractive index n. The ratio of the wavelengths of the incident and refracted waves is. A. 1:1                       B. 1:n C. n:1  ... more
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11/08/16

IN NEED OF STATISTICS HELP!! PLS I cannot figure it out and I am getting so frustrated :(
In a particular municipality, it is believed that 25 percent of homes are not properly insulated. In order to test H0:p=.25 vs. HA:p≠.25 (where p is the population proportion of homes that are not... more
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11/08/16

A boat travels 35 km upstream and then back again in 4 hrs. 48 mins. If the speed of the ship in still water is 15 km/hrs., what is the water speed?
Think it has something to do with rt=D or something like that.
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11/02/16

I really need help on this problem. Thanks. Determine whether the series is absolutely convergent, conditionally convergent, or divergent.
infinity (−1)^n (5^(n) n!)/(11 · 18 · 25 · ? · (7n + 4)) n = 1  
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10/26/16

Surface area = 4pr2; where r is the radius of the sphere; p is a constant that is roughly equal to 3.
 i can not solve this so do it for me
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10/21/16

Calculus 2 Area of a Region
Can someone walk me through this? I'm not understanding.   Consider the region enclosed by the graphs of 2y=5√x , y=8 , 2y+1x=6 The area A of this region could be computed in two ways: 1) By... more
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10/18/16

times a number is 16 less than the square of that number. Find the negative solution.
times a number is 16 less than the square of that number. Find the negative solution.
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10/03/16

CALC 3 : Is the line through (-4, -6, 1) and (-2, 0, -3) parallel to the line through (8, 19, 8) and (3, 4, 18)?
Is the line through (−4, −6, 1) and (−2, 0, −3) parallel to the line through (8, 19, 8) and (3, 4, 18)?   Please use something along the lines of parametric and symmetric equations! This is... more
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07/12/16

The air temperature is a nice 20 degree Celsius. If a ball is dropped in a well, and the sound is heard 4.0s later, how deep is the well?
Hi. This is a physics 11 problem and I know the answer is 70.5m. 
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04/21/16

Riemann sum
 1. Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six sub intervals, taking the sample points, xi, to be the right endpoint of each interval. Give three decimal places in your... more
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