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# Can someone help me with a related rates problem please?

An oil slick on a lake is surrounded by a floating circular containment boom. As the boom is pulled in, the circular containment area shrinks. If the radius of the area decreases at a constant rate...

∫(secθ⁄cosθ) dθ

# I need help with optimizing a minimum

A closed rectangular container with a square base is to have a volume of 3456 in3. The material for the top and bottom of the container will cost per \$4 in2, and the material for the sides...

# I need help with optimizing a minimum

A rectangular page is to contain 30 square inches of printable area. The margins at the top and bottom of the page are each 1 inch, one side margin is 1 inch, and the other side margin is...

how does 3-1/9=3 8/9? please and thank you.

how does 3-1/9=3 8/9? please and thank you.

# A have a question about related rates from my calculus class may someone help me?

A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 4ft/s. How rapidly is the area enclosed by the ripple increasing at the end of 12s?

# At what point is the tangent line to the curve y^3=2x^2.....

At what point is the tangent line to the curve y^3=2x^2 perpendicular to the line x-2y-10=0 ? (x,y) format

# Find by implicit differentiation.

Find d^2y/dx^2 x^6y^2-4=0

# solve system of equations.

X2-4Y2+7=0 3X2+Y2=31       X+Y+1=0 X2+Y2+6Y-X=-5

# system of linear equations: Matrices

Carletta has \$10,000 to invest. as her financial consultant you recommend that she invest in treasury bills that yield 6%, treasury bonds that yield 7%, and corporate bonds that yield 8%. Carletta...

# can someone help me with trigonometric equations?

Solve each equation on the interval 0≤θ<2pi tan θ=2 sin θ

# can you help me with trigonometric equations?

cos θ=-sin(-θ) solve each equation on the interval 0≤θ<2Π

# what is half of 2/3?

in order to get half of 2/3 do I divide by 2 or 1/2? in general when I want to find the half of something do I divide by 2 or 1/2? Why? (I am getting confused)

I am lost

# One solution of the equation x^3-8x^2+16x-3=0 is 3. Find the sum of the remaining solutions.

The answer is suppose to be 5, but I keep getting 2 irrational solutions.

# Find the real zeroes of f. Use the real zeroes to factor f. F(x) = 4x^5-8x^4-x+2

I'm having trouble factoring and finding all the zeroes.

# word problem

find three consecutive numbers such that the sum of the first integer, half the second integer, and four times the third integer is -30