Explore BrainMass

Basic Algebra

Algebra Exercises - Equations and Inequalities

1) If a < b, then -a > -b Why? 2) What role of operations that applies when you are solving an equation does not apply when you are solving an inequality? ---Give examples to explain your answers. Section 1.6: Exercises 100 and 104 Section 2.1: Exercises 92 and 94 Section 2.2: Exercises 78, 86, and 90 S

Polynomials, exponents, and scientific notation

Using the power rules with integral exponents (2s^-1t^3)/(6s^2t-4)^3 9.3*10-5 Computations with scientific notations 9*10^-4/3*10^-6 Evaluating Polynomials -2x^4 - 3x^2 + 5x -9 for x =2 Multiplying Monomials -12sq * 3a Multiplying Polynomials (3c^2d - d^3 + 1) 8cd^2 Perform the operation (5x-6)(5x-6)

Please send your solutions as early as possible. Thank you in advance

Please check attached file. And when you send your solutions, please use Microsoft word, doc. format for attachment. Problem #1. Telephoto lens. Please Use this formula: 1/f = 1/o + 1/i Problem # 2. Upstream, downstream. Junior's boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the s

PowerPoint Presentation on a rational function graph on a discussion board

In addition to the basic graph, programmers and game designers also need a resource to help them understand, analyze, and graph rational functions that frequently come up in their games designs. First, pick a rational function and graph it. for example, y = 1/x is a rational function. The graph looks like one seen in the foll

Probability Binomial Distribution

A businessman has an important meeting to attend, but he is running a little late. He can take one route to work that has six stoplights or another, longer route that has two stoplights. He figures that if he stops at more than half of the lights on either route, he will be late for the meeting. Assume independence, and assume t

Type Pythagorean theorem as a^2 +b^2 = c^2

Assignment Detail MTH133-0902B-32 College Algebra Assignment Name: Unit 2 Discussion Board Deliverable Length: 2-3 paragraphs Details: Library Assignment Measure the height of your computer monitor to the nearest tenth of a centimeter or sixteenth of an inch. Measure the width of your monitor as well. Use the Py

Algebra and Geometry Notation

MAT115 Solve all problems and attach your solutions Remember to show all steps and check your work carefully. Problem Remember to simplify all answers Solutions 1 Name the property that is illustrated. a) 7  6  6  7 b) 7  (1  9)  (7 1)  9 2 Give the place value for the indicated dig

Algebra : Solving Equations for Word Problems

Please see the attached file for the fully formatted problems. 94. Area of painting. A rectangular painting with a width of x centimeters has an area of x2 + 50x square centimeters. Find a binomial that represents the length. See the accompanying figure. 96. Amount of an investment of P dollars for t years at simple inte

Algebra - expressions, equations, inequalities

See attached file State all answers in standard equation format, interval notation, or solution set notation unless otherwise instructed by the problem statement. Also, show the step-by-step process you used to solve the problems. Simplify the following expression: 0.7(x + 1) - (x - 2) Mary loves to skip rope.

Radicals, word problems, and polynomials

5.5 factor each polynomial completely 81 - q^4 Section 6 Reducing radical expressions EX 104) EX 22) Ex 88) 88. Traveling time. After leaving Moose Jaw, Hanson drove 200 kilometers at x km/hr and then decreased his speed by 20 km/hr and drove 240 additional kilometers. Make a table like the one

Discrete math problems - theorem

In basic algebra the following Theorem is used frequently. If x,y and z are any three real numbers and if x + z = y + z then x = y. The analogous statement for sets would read: Let A, B, and C be any three sets. If A union B = A union C then B = C. Prove in detail that this statement is false. (Hint: Giv

Evaluating equations and ascending order

Please see the attached file for the fully formatted problems. Problems Show work Evaluate A) 14 &#61485; B) C) &#61485;14 D) 14 Place the following set of numbers in ascending order. A) B) C) D) Find the five-number summary of the following set of numbers. 0.16, 0.08, 0.27,

Algebra of Rational and Irrational

0.123 as a percentage 6.8% as a decimal rational-irrational 17x -75. 12 2.32 Commutative property associative property additive Identity Property additive Inverse Property 7+ (8+y) = (8+y) + 7 (8+a) + 5 = 8 + (a+5) 4+0=4 Solve for u 194-u=292 Solve for x -5/7x=15 Solve for t 2t + 11 = 51

Basic Algebra Express Decimals

1. Express 775% as a decimal. 775% is 775/100=7.75 A) 775 B) 77,500 C) 77.5 D) 7.75 2. Evaluate. | -7 | + | 13 | | -7 | + | 13 |=7+13=20 A) 20 B) -20 C) 6 D) -6 3. Evaluate. 81 ÷ 9 - 16 ÷ 8 81 ÷ 9 - 16 ÷ 8 A) 7 B) 9 C) 6 D) 8 4. Express 9.41 as a percent. 9.4

9 Simple algebra problems

See attached file Problems I need help with: Show work Place in ascending order: - - Evaluate: |4|+|-3| |9|-|-4| Add: 7+(-9)+(-5)+6 Evaluate: |-27+14| Label as true or false: |-8|+|3|=|-8+3| Jean deposited a check for $625, wrote 2 for $68.74 and $29.95 and used her debit card to pay for a purch

Word problems about formulas and rates

(1) If Ramon can mow the entire lawn in x -3 hours, then how much of the lawn does he mow per hour? (2) Toxic pollutants. The annual cost in dollars for removing p% of the toxic chemicals from a town's water supply is given by the formula C(p) =500, 000/100-p a) Use the accompanying graph to estimate the cost f

Interest and Logs

Please show work 74). Find the present value of $45,000 if interest is 3.6% compounded monthly for 1 year. 72). Write each expression as a single logarithm with coefficient Assume all variables represent positive real numbers. 82). Given and . Find each logarithm without using a calculator.

Statements, Logical Connectives and Truth tables.

Here are some questions from a study packet for my final. I would like solutions and explanations so that I may practice before my big test. Thanks! 1. Write a simple sentence and then write the negation. Imagine situations where each statement is true or false. How does the truth value (true or false) of the negation state

Basic Math-- Algebra & Geometry

I desperately need help in solving these problems. I have attached MS Word Document, please help me step by step (show the work so I can understand it better for next time). Thank You Very Much!! ---------------------- ***Please see the attached file.*** ---------------------- 1. A restaurant has 7 booths and 16

Basic Algebra

1. Write the ratio 5 to 9 as a fraction. 2. Are the following two lines parallel, perpendicular, or neither? A) Parallel B) Perpendicular C) Neither 3. Complete the following statement. 8,000 lb = ________ tons A) 3 B) 4 C) 5 D) 6 4. Write the ratio of to 6 in s

Radical Expressions,Equations,Quadratic Formula

Objectives Radical Expressions, Radical Equations, and the Quadratic Formula ? Simplify radical expressions. ? Perform operations with radical expressions. ? Solve radical equations. ? Solve a quadratic equation using the quadratic formula. ? Determine the number of solutions for a quadratic equation by using the discri

Measures of Central Tendency

This Discussion will give students the opportunity to calculate or identify the three measures of central tendency. Select an appropriate real life situation where one measure would be more appropriate than the other two measures of center. a.Select a common topic or hypothesis and record the topic in your posting. "Wha

Graphs, Tables and Solving Quadratic Equations

Math Assignments 2 1. 17 weekly low temperatures, in degrees Fahrenheit, were recorded during the months of February, March, April and May for a certain city. Using the Table function of Microsoft® Word, make a stem and leaf plot of the following data. Temperatures: 15, 20, 27, 22, 28, 24, 30, 35, 38, 36, 44, 47, 42, 49

Math problems

Please show work Please show work 20. Give the focus, directix, and axis for each parabola. 36. Write an equation for each parabola with vertex at the origin. Through (-2, ), opening left 38. Write an equation for each parabola with vertex at the origin. Through (2,-4), symmetric with respe

College Algebra

Please show work on problems attached. 14. Solve each system by substitution. 24. Solve each system by elimination. 32. Solve each system. State whether inconsistent or has infinitely many solutions. If the system has infinitely many solutions, write the solution set with y arbitrary. 34. Solve

Maximal ideals

With respect to the ideal I=<2,x> in Z[x] I believe this ideal is maximal because one theorem I have read suggests to me that all maximal ideals of Z[x] are in the form <p, f(x)> where p is prime and f(x) is an element of Z[x] and irreducible mod p. It appears that <2,x> fits this description. Did I understand correc

Mathematics - Other - Explanation of posting

For the problem presented #247154 The example that was given was great but am a little confuse and one of my classmates ask me the following question to help understand the answer. Can you clarify the question. Okay, you have totally confused me now. You say, "Totally we have 4 + 2 + 2 + 1 = 9 letters n = 9 But there a

Natural Logarithmic Function

The term t (in years) of a $120,000 home mortgage at 10% interest can be approximated by t = 5.315 / (-6.7968 + log(x)), x > 1000, where x is the monthly payment in dollars. [this problem is meant to be solved using a graphing utility] a) Use a graphing utility to graph the model. [No problem; I have Maple] b) Use the mo