Share
Explore BrainMass

Basic Algebra

Unit 2 Individual Project 2D

1a) Solve the following quadratic equation by factoring: Answers: Show work here: 1b) Solve the following quadratic equation by using the quadratic formula: Read the information in the assignment list to learn more about how to type math symbols, such as the square root. Answers: Show work here: 1c) Compute the discrimin

Galois Group

If f(x)=x^7-2 and K is its splitting field over Q, determine the degree of [K:Q], describe K explicitly using a primitive element or by listing a set of generators over Q and find the Galois group of K/Q.

Inequalities-Creating a shape with a coordinate plane closed figure

Creating a Shape: You will create a colored in, closed figure on a coordinate plane and then state the inequalities that allow you to create the figure. You may use the link and directions below to help you create your shape or you may use any paint program, power point, or graph the figure by hand, scan, and attach. For h

Abstract Algebra Problems

In addition to the attached, from 3-37, the subgroup is the one generated by the 270 mapping. 3-37 In the octic group, find the cyclic subgroup generated by the 270 mapping. What is the order and index?

Multiple algebra questions

1. Traffic signs are regulated by the Manual on Uniform Traffic Control Devices (MUTCD). The perimeter of some traffic signs must be 68 Inches. Also, its length is 6 inches longer than its width. Find the dimensions of this sign. The width of the sign is? The Length of the sign is? 2. A hardw

Properties of Affine Groups over Finite Fields

Let F be a field. The 1-dimensional affine group over F is the set A of all functions f: F -> F of the form f(x) = ax+b where a, b belong to F and a is a unit. Let S and T be subsets of A consisting of the scaling (s(x)=ax) and translations (t(x) = x+b) Are S and T normal subgroups? If p > 3 and F = Z/p consider the subgro

Green Functions

I'm looking for help in solving question 3 which is attached as a PDF document to this description. The question asks for the Green Function, GF of: d(^2)y/dt(^2) +5*dy/dt + 6*y and show that's its generic sol is y(t)= e^-2t int e^2z f(z) dz - e^-3t int e^3z f(z) dz.

Using Math Induction for Proof

Find a formula for (1/(1*2) + 1/(2*3) + ..... + 1/ (n*(n+1) ) by examining the values of this expression for small values of n. Prove the formula you found by induction Please show me stepwise in word document.

Inequality for Convex Function

Let a < b be real numbers and f: [a,b] -> R a convex function (equivalently a concave upward function). Define F(s,t) = f (s) + f(t) - 2f((s+t)/2) Prove that F(s,t) &#8804; F(a,b) for every s,t &#8712;[a,b].

Identities Involving Logarithms

a) Show that if Re z1 > 0 and Re z2 > 0, then Log (z1z2) = Log z1 + Log z2 b) By choosing specific nonzero values of z1 and z2, show that expression "log(z1/z2) = log z1 - log z2" , for log (z1/z2) is not always valid when log is replaced by Log.

Fundamental Counting Principle

Use the Fundamental Counting Principle to determine the number of 3-letter expressions possible under the following circumstances: The first letter must be a vowel (a, e, i, o, or u); the second letter can be any letter except a vowel; the third letter can be any letter of the alphabet. Remember that there are 26 letters in th

State Review for Elementary Algebra

5. How many feet of fencing should be purchased for a rectangular garden that is 17 ft. long and 16 ft. wide? A) 272 ft. B) 132 ft. C) 66 ft. D) 33 ft. 7. Write 0.000097717 in scientific notation. A) B) C) D) 9. Write 130% as a fraction in simplified form. A) B) C)

Algebraic Inequalities

Please solve the following inequality problems. You must give your answer using the interval notation. You must also give you answer in graphical form (using the number line). (a) (4 - x) is less than or equal to (-2) or x + 3 > 3x - 1 (b) 1 -2x <7 and (3x-2) is less than or equal to 1

Exponential and Logarithmic Functions

The pH of a solution is given by pH = -log x, where x represents the concentration of the hydrogen ions in the solution, in moles per liter. Express answers in powers of 10 1. What is the hydrogen ion concentration of lemon juice. 2. What is the hydrogen ion con

Logarithm and Scientific Notation

1. Imagine that every single person in your contact list has the same number of people in their contact list as you. Write this total number of all the contacts in all the phones (ignore the fact that some may repeat) as an exponential. Next, evaluate this exponential. 2. Express the value you calculated in the first problem

Logarithms and Exponents

Exercises 1. Solve the following problems with exponents a. 25 b. 3-3 c. 115 d. 02 e. 223/4 2. Solve the following problems with roots a. (sqrt)169 b. (sqrt)50 c. 3(sqrt)82 (Cube Root of 82) 3. Write the following

Rational Equations, Pythagorean Theorem and Quadratic Equations

1. Explain the five-steps for solving rational equations. Can any of these steps be eliminated? Can the order of these steps be changed? Would you add any steps to make it easier, or to make it easier to understand? Provide an example with your explanation. 2. How might the Pythagorean theorem and distance formula be used in

Identifying Factors in Trinomials

Identify a factor of the following trinomial: 15u2 - 17u - 26 A. (u + 2) B. (u - 13) C. (u - 2) D. (u + 13) Identify a factor of the following trinomial: 17r2 - 48r + 28 A. (r - 2) B. (r - 14) C. (r + 14) D. (r + 2) Identify a factor of the following trinomial: 12u2 - 16u - 16 A. (12u + 8) B.

You are considering the purchase of a computer

You are considering the purchase of a computer and have consulted several computer magazines that contain ratings and prices for the five models you are investigating. You decide to include price, speed, and expansion capabilities as three criteria on which you will judge the models under consideration. The ratings, with 10 bein

Monic polynomial

Find an irreducible monic polynomial of degree 2 over the field Z_7 whose root is a primitive element GF(49).

What is the greatest common factor?

1. What is the greatest common factor? How do you know when you have found the greatest one? Provide an example and a detailed explanation. 2. Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. Is there more than one way to factor this? Use an example in your explanation. Show your answer usin

Algebra-related Problems

1. Express in terms of i. 4 square root of -255 2. Subtract. (5x^6 + 9x^4 - 2x^3 - 3) - (8x^6 - 8x^5 + x^4 - 4) 3. Given the quadratic function f(x) = x^2 - 18x + 81, find a value of x such that f(x) = 16 4. Joe has a collection of nickels and dimes that is worth $7.65. If the number of dimes was doubled and the numb

Algebra; Factoring 2

1. Completely factor the following expression: 25a^2-60ab + 36b^2 2. Factor the following expression into a product of two binomials: 36x^2-84x+49 3. Use the "difference of squares" rule to factor the following expression: 16x^4-121y^4 4. Megan factored the expression12x^2+13x-14 as (3x+2)(4x-7). But when Jacob appli

Diagonal brace on a bridge connects

1. A 100-ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 20 ft longer than the height that it reaches on the side of the bridge. Find the horizontal and vertical distances spanned by this brace. 2. The length of a rectangle

Factorization of Multivariable Polynomials

Factor out the greatest common factor from the expression 9x^4y^4+7x^6y^3-12x^4y^3 Factor out the greatest common factor from the expression 1ox^2yz^3-6x^2y^2z-4xy^3z^2 Completely factor the expression 5x^2y + 30xy^2 + 45y^3 Completely factor the expression 18x^2-32y^2

Apply the quadratic formula

For questions 1-2, apply the quadratic formula to find the roots of the given function, and then graph the function. For questions 3-4, factor the quadratic expression completely, and find the roots of the expression. For question 5, complete the square, and find the roots of the quadratic equation. In questions 6-1

Factor the following expression completely

1. Factor the following expression completely 36x3 - 16x 2. Andrew factored the expression 28x^3-6x^2-10x as 2x(14x^3-3x^2-5x). But when Melissa applied the distributive law and multiplied out 2x(14x^3-3x^2-5x), she got 28x^4-6x^3-10x^2 ; thus, Andrew's solution does not appear to check. Why is that? Please help Andrew to