Sherwood P.

12/20/21

Let f : R → R be a continuous function that is convex on (-infinity, 0] and [0, ∞) and has a local maximum at the point 0. Prove that the function f is not differentiable at the point 0.

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Answers •1

11/15/21

Is y=x a polynomial?

If yes, what is its degree, leading coefficient and constant? Assume I know nothing and explain the meaning of all the math words you use.-Clark

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Physics

11/05/21

I really need help on these Physics questions. Will someone please help me answer them?

What would be the sum of a vectors 10 m East and 10 meters East?a. 0 m westb. none of thesec. 20 m Eastd. 20 m WestWhat would happen to the distance travelled by the baseball horizontally, if the... more

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Discrete Math

11/04/21

Logical reasoning validity question

Use truth tables to show whether the following arguments are valid. If the argument is valid, explain why. If the argument is not valid, give a counterexample. 1. A ∨ B B2. C ∨ DD ∨ ~CD

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Math Prealgebra Statistics

10/15/21

Function Problem

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Answers •1

Calculus

10/14/21

suppose g(x)= (1/x+1 if x<1 and 2x-1if x>/1. The best description concerning the continuity of g(x) is that the function:

A. has a jump discontinuity B. has both jump and infinite discontinuity C. has a removable discontinuity D. is continuosE. has an infinite discontinuity

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Trigonometry

07/17/21

Find an equation for the population, P, in terms of the months since January, t. P ( t ) =

A population of rabbits oscillates 19 above and below average during the year, hitting the lowest value in January (t = 0). The average population starts at 950 rabbits and increases by 180 each year. more

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Math Algebra 1 Logic

07/16/21

Let E be a non-empty set. Let's consider the inclusion relation over P(E): (∀x, y ∈ P(E))(X ≤ Y ⇔ X ⊂ Y )

Let E be a non-empty set. Let's consider the inclusion relation over P(E): (∀x, y ∈ P(E))(X ≤ Y ⇔ X ⊂ Y )(a) Show that it is an order relation. (b) Show that it is total if, and only if, E = {a}I... more

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Probability

07/08/21

Basic Probability

Our friend Deepika needs some winter clothing, so she goes to her local clothing store to see what choices they have. Looking around the store, she sees that they have two types of winter items:... more

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Math Calculus

12/29/20

What point on the line 3x – y = 4 is closest to the point A(–2, 3)?

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Answers •2

Discrete Math Combinatorics Partitions

12/21/20

Prove that among all the 2^(n−1) compositions of n, the part k occurs a total of (n − k + 3)2^(n−k−2) times

Let 1 ≤ k < n. Prove that among all the 2n−1compositions of n, the part k occurs a total of (n − k + 3)2n−k−2 times. For instance, if n = 4 and k = 2, then the part 2 appears once in 2 + 1 + 1,... more

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Discrete Math Computer Science Computer Engineering

12/20/20

Discrete Mathematics

Let N(x) be the statement "x has visited Finland," where the domain consistsof the students in your school. Express each of these quantifications∋ in English.(a) ∃xN(x)(b) ¬∃xN(x)(c) ∃x¬N(x)(d)... more

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Precalculus

12/12/20

A rectangular fence is to be built with 325 yds of fencing. The total A enclosed within the rectangle can be expressed by the function A(l)=-2l^2+325l where l is the length of the rectangle (in yds)

Find the rectangle length that yields the maximum area. What is the maximum area? Explain.

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Ap Calculus

12/12/20

Lt f be the functin given by f(x)=2x^3. If the values in the table are used to estimate f'(0.5), what is the difference between the estimation and the actual value of f'(0.5)?

X : 0 1f(x): 1 2Lt f be the functin given by f(x)=2x^3. If the values in the table are used to estimate f'(0.5), what is the difference between the estimation and the actual value of f'(0.5)?A)... more

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Algebra

11/17/20

Jennie has 18 coins that are all either quarters or dimes. The total value of her money is $3.20. Write one equation for the total number of coins and a second equation for the total value.

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Trigonometry Algebra Complex Numbers

11/12/20

What are the three cube roots of -8i? i = √-1

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Answers •3

Calculus

11/12/20

Let xy = 1 and dy/dt = 4 .

Find dx/dt when x=1.

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Discrete Math

11/09/20

Question Prompt in Description below, what is the correct answer to each of the questions?

Seven new employees, two of whom are married to each other, are to be assigned seven desks that are lined up in a row. If the assignment of employees to desks is made randomly, what is the... more

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Physics

10/14/20

Problem Solving with g= 9.8 m/s2

What is the velocity of a dropped object after it has fallen for 3.0s?

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Finite Math

10/11/20

Probability that the resulting 3 digit number is less than 500

Rework problem 12 from section 2.4 of your text, involving the construction of a number from a set of digits. Assume that 3 digits are selected at random from the set and are arranged in random... more

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Math Precalculus Trigonometry

09/24/20

Beth and Steve are on a carousel. Beth is 7 feet from the center and Steve is right on the edge, 7 feet further from the center than Beth.

Steve's linear speed is only π/3 feet per second. How far is he standing from the center of the carousel?

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Math Algebra 2 Precalculus

09/18/20

Solve algebraically: 7 / (x-8) < 9 / (5x-2)

Simplify your answer. Write your answer in interval notation. Use integers or fractions for any numbers in the expression.

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Answers •2

Math Precalculus Asvab

09/18/20

How many cooks will it take to cook 29 large cakes and 220 small cakes in a kitchen that is available for 2 hours?

A cook can cook 4 large cakes in an hour. A cook can cook 12 small cakes in an hour.A kitchen is available for two hours for cooks to use.How many cooks will it take to cook 29 large cakes and 220... more

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Precalculus

09/18/20

i really dont get this please help

Find the exact value of arctan (sin (PI/2 )). For full credit, explain your reasoning.

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Answers •2

Math Sat Math Mathematics

07/16/20

can i please have the answer

Lisa, Tom, and Hans served a total of 71 orders Monday at the school cafeteria. Hans served 2 times as many orders as Lisa. Tom served 5 fewer orders than Lisa. How many orders did they each... more

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Answers •1

Let f : R → R be a continuous function that is convex on (-infinity, 0] and [0, ∞) and has a local maximum at the point 0. Prove that the function f is not differentiable at the point 0.

Is y=x a polynomial?

I really need help on these Physics questions. Will someone please help me answer them?

Logical reasoning validity question

Function Problem

suppose g(x)= (1/x+1 if x<1 and 2x-1if x>/1. The best description concerning the continuity of g(x) is that the function:

Find an equation for the population, P, in terms of the months since January, t. P ( t ) =

Let E be a non-empty set. Let's consider the inclusion relation over P(E): (∀x, y ∈ P(E))(X ≤ Y ⇔ X ⊂ Y )

Basic Probability

What point on the line 3x – y = 4 is closest to the point A(–2, 3)?

Prove that among all the 2^(n−1) compositions of n, the part k occurs a total of (n − k + 3)2^(n−k−2) times

Discrete Mathematics

A rectangular fence is to be built with 325 yds of fencing. The total A enclosed within the rectangle can be expressed by the function A(l)=-2l^2+325l where l is the length of the rectangle (in yds)

Lt f be the functin given by f(x)=2x^3. If the values in the table are used to estimate f'(0.5), what is the difference between the estimation and the actual value of f'(0.5)?

Jennie has 18 coins that are all either quarters or dimes. The total value of her money is $3.20. Write one equation for the total number of coins and a second equation for the total value.

What are the three cube roots of -8i? i = √-1

Let xy = 1 and dy/dt = 4 .

Question Prompt in Description below, what is the correct answer to each of the questions?

Problem Solving with g= 9.8 m/s2

Probability that the resulting 3 digit number is less than 500

Beth and Steve are on a carousel. Beth is 7 feet from the center and Steve is right on the edge, 7 feet further from the center than Beth.

Solve algebraically: 7 / (x-8) < 9 / (5x-2)

How many cooks will it take to cook 29 large cakes and 220 small cakes in a kitchen that is available for 2 hours?

i really dont get this please help

can i please have the answer

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