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    Basic Algebra

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    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

    Perimeter Algebra and Quadratic Equations

    1.) A gardener wants to create a triangular garden in the shape of a right triangle with shortest side length x - 2y ft. and the middle length side x + 4y ft. What is an algebraic expression for the area of the garden? Be sure to multiply this out and express in simplest correct mathematical form, including units. 2.) Find th

    Determining if variables are directly proportional

    For each of the relationships described below, determine if the variables are directly proportional. Write a sentence or two for each to justify your answers. a.) Total number of words a typist can type and the number of minutes spent typing if he or she types 72 words per minute. b.) The temperature of an asphalt road at

    Finding the Price of the Call Option by the Black-Scholes

    Parameters Strike price = $120; Expiration time = 1 year; Annual interest rate = 0.05; Stock volatility = 0.35. For the initial stock price, S0 = 100.45 Requirements 1. Find the price of the call option by the Black-Scholes formula rounded to the nearest cent.

    Algebra Problems Term Coefficient

    1. List the terms, coefficients, and degree of the following polynomial: -4x3 + 6x2 - 5x + 1/3 2. Write all of the following statement(s) that apply to the following polynomial: -8x + 2x2 - 3 It is a binomial. It can be evaluated at x = 1/3 It has a coefficient of 8. It is quadratic.

    Example Algebra Problems

    1. Short Answer. Add the following: (-2.5x2 + 9x - 7.9) + (3.3x2 - 1.9x + 1.9) 2. Essay question: show all work. Find the difference: (-7x2 + 5x - 9) - (2x2 + 7x + 5) 3. Find the product: -9x(4x2 - 2x + 1)

    Equation for Electricity Bill in One Month

    A household electricity bill for one month in which 2,494 kWh (kilowatt per hour) were used includes, among other charges, a distribution charge. The bill reads: Current Charges Charges for - UTILITIES Residential Rate: RS for Jun 9 - Jul 12 Distribution Charge: Customer Charge

    Math Problems

    1. Sketch a graph of the following equations a. b. y = |x| + 2 c. 2. Find the equation (in the form ) of a line through points (1, 7) and (-3,2) 3. The relationship between air temperature T (in ?F) and altitude h (in feet above seal level) is approximately linear up to an altitude of 20,000 feet. If th

    Algebra Solutions: Solve using the Addition Principle

    1. Solve using the addition principle. m - 3 = 5 A) 2 B) -2 C) 8 D) -8 2. Solve using the addition principle. s + 5 = 8 A) -3 B) 13 C) 3 D) -13 3. Solve using the addition principle. x - = 0 A) - 9 B) 9 C) D) - 4. Solve using the addition principle. 8 = z + 3 A) -11 B) 11 C) 5 D) -5

    Proving or Disproving Claims

    Please see the attached file for the complete problem description. Note: a) and b) are independent; for each of them it should be separately decided if that combination is an ideal and for the first point of the question all ideals are in Z[sqrt(-5)].