06/07/19

Calculus Homework
Given revenue and cost functions Upper R left parenthesis q right parenthesis equals 70 q minus 0.5 q squaredR(q)=70q−0.5q2 and Upper C left parenthesis q right parenthesis equals 13 q plus... more
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06/06/19

A conical tank (with vertex down) is 16 feet across the top and 22 feet deep. If water is flowing into the tank at a rate of 18 cubic feet per minute, find the rate of change of the depth of the water
A conical tank (with vertex down) is 16 feet across the top and 22 feet deep. If water is flowing into the tank at a rate of 18 cubic feet per minute, find the rate of change of the depth of the... more
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06/05/19

How can I solve: dy/dx + (1 + cos2y) / (1 - cos2y) =0?
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06/05/19

How can I solve 8x^2y"+10xy'-(1+x) y=0?
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06/04/19

The Speed of a transverse wave in a string of 10m/s. If the frequency of the source producing this wave is 2.5 Hz what is its wavelength
Please add equation and explanation a. 0.25 M b. 2m c. 4m d. 5 m
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06/03/19

2.2.2 calculating energy

A girl skateboards with a kinetic energy 2543.2 J . If the girl and skateboard have a total mass of 110 kg , what is her speed ?
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06/03/19

Differentiation
Find the differentiation of x²e*sinx
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05/31/19

Trigonometry Problem. A wooden flagpole is embedded 3m deep....
A wooden flagpole is embedded 3m deep at one corner of a concrete horizotnal slab, square in form and measuring 20ft on a side. A storm broke the flagpole at a point 1m above the slab and inclined... more
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05/31/19

determine the period if function f(x)=tan(x/2)
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05/28/19

Davis notices that his hair is decreasing exponentially at a rate of 10% per year. If he starts with 100,000 hairs on his head, how many hairs will he have after 3 years ?
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05/24/19

Help me please!!
Solve each system of equations by using substitution{x-2y=0 {4y=x{x2+y2=125 {x2-y2=60Please show your work
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05/24/19

Algebra 2 Help!
What are the solutions of the system {(x-1)2+(y-3)2=9{x2-2x-3y+1=0a. (-2,3) and (4,3)b. (-2,3), (4,3) and (1,0)c. (-2,3), (4,3), (1,0) and (1,3)d. no solution
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05/23/19

VECTOR PROBLEM WITH FORCE
A block slides 42 m down a ramp that makes an angle of 60 degrees with the ground. Determine the mass of the block if 10 400 J of work was done. (Assume 1 kg exerts a force of 9.8 N).
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05/23/19

A vertical flagpole is mounted on a hill that makes a 10° angle with the horizontal. If the sun, shining at an angle of elevation of 70°, makes a 13 foot shadow down the hill, how tall is the flagpole
A vertical flagpole is mounted on a hill that makes a 10° angle with the horizontal. If the sun, shining at an angle of elevation of 70°, makes a 13 foot shadow down the hill, how tall is the... more
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05/22/19

Sketch the region enclosed by y = e^4x , y = e^7x , and x = 1 . Find the area of the region.
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05/22/19

Please help me with this question
Farmer Jones, and his wife, Dr. Jones, decide to build a fence in their field, to keep the sheep safe. Since Dr. Jones is a mathematician, she suggests building fences described... more
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05/22/19

Write the pair of parametric equations in rectangular form:
x=2tant/2 ; y=sect/2
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05/21/19

How to find the inductance
Hi, I cannot seem to find the exact equation to answer a question regarding a R-C? series circuit (resistor and coil?)R = 5Ω I = 20AVs = 200v, 50HzI need to calculate Z, the value of the inductor... more
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05/19/19

Integrate ∫ x^2/(√ x^6 +16)dx
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05/17/19

Projectile Motion 1
A bird flying horizontally accidentally drops a rock it was carrying. 2.10s later, the rock’s velocity is 22.2 m/s in a -68.2 degree direction. What was the bird’s (and rock’s) initial velocity?... more
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05/16/19

One number is 1 more than twice another number. The sum of the squares of the two numbers is 97. Find the numbers.
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05/16/19

Can anyone help me solve this calculus problem?
Find the volume generated by revolving the region about the x-axis. y = (2cosx) 0 ≤ x ≤ π,  x = 0,    y = 0
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05/16/19

integral calculus pls help me
volume y=x, y=x, about x=4
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05/15/19

Calculus find Width Height and Length(Box with no top)
You have 150 square feet of material to build a rectangular box.The length is the same as the width and there is no top.What values for W and L and H will create a box that encloses the maximum... more
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05/14/19

I am needing help figuring out which rules of integration to use.
*integral* of (x^2)(sin(3x))*integral* of (x^2) / (sqrt ( 9-x^2))
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