Tom K.

11/19/20

Circular Trigonometry Question

Find an exact value by using an appropriate addition or subtraction formula.Find the exact value for cos 15°Which answer is itA:√6 - √2 /4B: √6 + √2 /4C: -√2 - √6 /4D: √2 - √6 /4

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Calculus Precalculus Tangent

11/19/20

Which of the following equations describe a tangent plane to the curve z=1/xy, at the point (x,y)=(1,2).

Which of the following equations describe a tangent plane to the curve z=1/ xy, at the point (x,y)=(1,2).a)z - 1/2 = -1/2(x-1) - 1/4(y-2)b)z - 1/2 = 1/2(x-1) + 1/4(y-2)c) z - 1/2 = 1/4(x-1) +... more

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Calculus Limits Derivatives

11/19/20

Which of the following two expressions are equivalent alternatives to the definition of a derivative?

Which of the following two expressions are equivalent alternatives to the definition of a derivative?A: lim j -> 0 f(x) - f(x-j) / j B: lim j -> 0 f(x - j/2) - f(x + j/2)/ j A only B only... more

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Calculus

11/19/20

Optimization with solids and distance. Finding closest point

Find the point on the line 3x+7y−3=0 which is closest to the point (−5,−4)

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Calculus Series Maclaurin Series

11/19/20

Find the Maclaurin series

Find in the Maclaurin series ∑ n=0 ∞ an for ƒ(x) = 2x6 cos (x9) and find the interval on which the expansion is valid.

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Algebra 2

11/18/20

Write an equation of a parabola intercept form.

X intercept of 12 and -4 and passes through (16,50)

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Algebra 2

11/18/20

Function 2: Write a rational function that has at least two vertical asymptotes, no holes and no horizontal asymptote.

Write the function in factored form and then write it in standard form. List the vertical asymptotes. Describe the end behavior of the function.

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Calculus

11/18/20

Function concave

Answer the following questions for the function ` f(x) = x \sqrt(x^2 + 36)`defined on the interval `-6 le x le 6 `.` f(x) ` is concave down on the interval x = __________________ to x =... more

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Algebra 2

11/18/20

A parabola can be drawn given a focus of ( 7 , − 4 ) (7,−4) and a directrix of y = − 10 y=−10. Write the equation of the parabola in any form.

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Calculus Convergence

11/18/20

Please help check my answer? Which of the following series converges conditionally?

Which of the following series converges conditionally? Diverges Converges Diverges Converges Conditionally? I chose this

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Algebra 2 Precalculus Logarithm

11/18/20

Evaluating Logarithmic Equations

How might I evaluate the logarithmic equation of:25 = log5(3-x) - 2 log5(x)Any help would be greatly appreciated!

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Precalculus

11/17/20

How do I write the expression cos(cos^-1(u)+sin^-1(v)) as an algebraic expression containing only u and v?

cos(cos-1(u)+sin-1(v))

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Math Algebra 2 Linear Algebra

11/15/20

Linear Algebra - Linear Combination of Vectors

Consider the vectors u = (1, 2,-1) and w = (6, 4, 2) in R3, show that w = (9, 2, 7) isa linear combination of u and v and that w0 = (4, -1, 8) is not a linear combinationof u and v.

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Calculus

11/15/20

The top and bottom margins of a poster are 2 cm and the side margins are each 6 cm. If the area of printed material on the poster is fixed at 386 square centimeters

Find the dimensions of the poster with the smallest area.Width = Height = Please help!! Thank you!

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Calculus Sat Math Mechanical Engineering

11/15/20

Use a double integral to find the area enclosed by x = y − y^2 and x + y = 0.

use double integral to solve this calculus based problem.define the region and set the limits.

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Math Precalculus Trigonometry

11/14/20

Solve the triangles

Two sides and an angle are given below. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results. a=8, b=3,... more

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Calculus Vectors

11/14/20

Find the coordinates of R if you know two vertices of the isosceles triangle having coordinates as P(2,3,4) and Q (4,5,6) and distance of two the vertices PR and QR is 5

Find the coordinates of R if you know two vertices of the isosceles triangle having coordinates as P(2,3,4) and Q (4,5,6) and distance of two the vertices PR and QR is 5. Find out the coordiantes of R more

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Discrete Math

11/14/20

Given 10 numbers a1, a2, . . . , a10, from the set S natural numbers S = {1, 2, 3, . . . , 100} . Prove that there exist two (or more) subsets of the 10 numbers whose elements sum to the same value.

The answer needs to be in terms of the pigeonhole principle and it has to be a generalized answer.

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Calculus

11/13/20

Maximize Rectangle area with y=e^-x/6

A rectangle has one corner at the origin and the other on the curve y=e−x/6. Find the dimensions that maximize the rectangles area. Assume x is positiveWidth x=Height y=

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Calculus

11/13/20

Find n and this volume, both in exact form.

Consider the trapezoidal region bounded by the graphs of x = 0, x = 1, y = 0, and y = x + n for a certain positive real number n. The volume obtained by revolving this region about the x-axis is... more

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Statistics Probability

11/12/20

Statistics and Probability

A box contains ten numbered balls – one ball with the number 1, two balls with the number 2, three balls with the number 3 and four balls with the number 4. You will randomly select two balls from... more

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Calculus Bc

11/12/20

Which one or ones of the following integrals produces the area that lies inside the cardioid r = 4 + 4 cos θ and

Which one or ones of the following integrals produces the area that lies inside the cardioid r = 4 + 4 cos θ and outside the circle r = 6? (5 points) I only II only II and III only I... more

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Algebra 2

11/12/20

Two trucks to Atlanta

two trucks bound for atlanta both depart from Philadelphia at the same time and travel along the same route. the first truck travels 12 miles per hour faster than the second truck and arrives 4... more

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Statistics Probability

11/12/20

Can someone help me work through this probability problem?? please and thank you

Can someone walk me through how to solve this problem? I keep getting it incorrect and I don't understand what I'm doing wrong (please show work)."The time (in minutes) until the next bus departs a... more

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Calculus Implicit Differentiation

11/12/20

Find all points on the curve x^4+x^2*y^2+y^3=5 where the tangent line is horizontal.

I found dy/dx, but stuck on what to do next. Several of my peers are also stuck on this!

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Circular Trigonometry Question

Which of the following equations describe a tangent plane to the curve z=1/xy, at the point (x,y)=(1,2).

Which of the following two expressions are equivalent alternatives to the definition of a derivative?

Optimization with solids and distance. Finding closest point

Find the Maclaurin series

Write an equation of a parabola intercept form.

Function 2: Write a rational function that has at least two vertical asymptotes, no holes and no horizontal asymptote.

Function concave

A parabola can be drawn given a focus of ( 7 , − 4 ) (7,−4) and a directrix of y = − 10 y=−10. Write the equation of the parabola in any form.

Please help check my answer? Which of the following series converges conditionally?

Evaluating Logarithmic Equations

How do I write the expression cos(cos^-1(u)+sin^-1(v)) as an algebraic expression containing only u and v?

Linear Algebra - Linear Combination of Vectors

The top and bottom margins of a poster are 2 cm and the side margins are each 6 cm. If the area of printed material on the poster is fixed at 386 square centimeters

Use a double integral to find the area enclosed by x = y − y^2 and x + y = 0.

Solve the triangles

Find the coordinates of R if you know two vertices of the isosceles triangle having coordinates as P(2,3,4) and Q (4,5,6) and distance of two the vertices PR and QR is 5

Given 10 numbers a1, a2, . . . , a10, from the set S natural numbers S = {1, 2, 3, . . . , 100} . Prove that there exist two (or more) subsets of the 10 numbers whose elements sum to the same value.

Maximize Rectangle area with y=e^-x/6

Find n and this volume, both in exact form.

Statistics and Probability

Which one or ones of the following integrals produces the area that lies inside the cardioid r = 4 + 4 cos θ and

Two trucks to Atlanta

Can someone help me work through this probability problem?? please and thank you

Find all points on the curve x^4+x^2*y^2+y^3=5 where the tangent line is horizontal.

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