Explore BrainMass

Explore BrainMass

    Basic Algebra

    BrainMass Solutions Available for Instant Download

    Quadratic Equations - 1. How do you know if a quadratic equation will have one, two or no solutions? How do you find a quadratic equation if you are only given the solution? ... 2. Quadratic equations can be solved by graphing, using the quadratic formula, completing ...

    1. How do you know if a quadratic equation will have one, two or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution? Explain provide an example with one or two solutions with which I must create a quadratic equation?

    Differential Equations Problem Involving Implicit Differentiation

    The problem is: dx/dt = (x-1)(1-2x); ln {2x-1/x-1} = t To solve this problem I must, first, verify that the indicated expression is an implicit solution of the given first-order differential equation then find at least one explicit solution. The last element of the solution is to use a graphing utility to obtain the graph

    Algebra problems

    1. In 1920 the record for a certain race was 46.8 sec. In 1970, it was 45.8 sec. Let R(t)= the record in the race and t= the number of years since 1920. a. Find a linear function that fits the data b. Use the function in (a) to predict the record in 2003 and in 2006 c. Find the year when the record will be 44.8 sec 2.

    Radical and rational exponents

    Part 1: Using the Library, web resources, and/or other materials, find the average weight in pounds of a type of bird of your choice. Use the rational exponent equation L = 2.43 * W^0.3326 to estimate the wingspan L in feet of the bird that weighs W pounds (Rockswold, 2006). Include in your post the type of bird and the avera

    Algebra - Degree of an Angle

    I have a hard time of remembering a way to figure the degree measures of angles. I know that a complementary is the sum to equal 90 degrees and the supplementary is 180 degrees. What confuses me is when given two degrees of and angle and one is on the outside of the angle, how do I remember to get the degree of the missing insi

    check the solutions are correct

    How do I verify that the answers I arrived at are correct? Here is an example of solving the system of equations Find the values of x and y that solve the system of equations 5x-4y=-14 -7x+5y=22 1) 5x-4y=-14 2) -7x+5y=22 If we multiply the first equation by five and the second by four, we get 25x -

    Gas mileage

    In a family there are two cars. The sum of the average miles per gallon obtained by the two cars in a particular week is 50. The first car has consumed 20 gallons during that week, and the second has consumed 35 gallons, for a total of 1450 miles driven by the two cars combined. What was the average gas mileage obtained by each

    Distance to destination and driving time

    Jim will drive to Miami. Suppose that the distance to his destination (in miles) is a linear function of his driving time (in minutes). When graphed, the function gives a line with a slope of 0.95 . Jim has 47 miles to his destination after 28 minutes of driving. How many miles will he have to his destination after 50 minute

    Algebra - Finding How Many Members In A Club

    Members of a flying club plan to share equally the cost of a $200,000 airplane. The members want to find five more people to join the the club so that the cost per person will decrease by $2000. How many members are currently in the club?

    Cost

    The cost of water use (in dollars) is a linear function of the amount of water used(in hundreds of cubic feet, HCF),the cost for using 20 HCF of water is $33.32 and the cost for using 31 HCF is $51.47 . What is the cost for using 22 HCF of water?

    Monthly bill - Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the house hold uses(in hundreds of cubic feet, HCF)When graphed, the function gives a line with a slope of 1.65. if the monthly bill for 15 HCF is $26.37 what is the monthly bill for 10 HCF?

    Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the house hold uses(in hundreds of cubic feet, HCF)When graphed, the function gives a line with a slope of 1.65. if the monthly bill for 15 HCF is $26.37 what is the monthly bill for 10 HCF?

    1. If x = 1 and x = -8, how would I form a quadratic equation? 2. What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solution of the equation.

    1. If x = 1 and x = -8, how would I form a quadratic equation? 2. What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solution of the equation.

    Quadratic Graph Domain and Range

    I am having trouble with the problems attached Graph & state domain and range Solve with method of choice Prove that is the solution to the quadratic ax^2+bx+c=0

    Solving algebra word problem equations

    Use problem solving approach to analyze and solve word problems: Will order 2 times as many boxes of ball point pens as boxes of felt tip pens, ball point pens cost $3.50 per box, and the felt tip pens cost $4.50 a box. If Will order of pens total $46.00 how many boxes of each type of pens did he buy?

    Algebra - Radical Equations

    See attached 1. At a height of h meters, you can see V kilometers to the horizon. These numbers are related by the equation . A person can see 392 km to the horizon from an airplane window. How high is the airplane? 2. The formula can be used to approximate the speed r, in miles per hour, of a car that has left skid marks

    Quadratic Equations

    Write three quadratic equations, with a, b, and c (coefficients of x^2, x, and the constant) as: 1. Integers 2. Rational numbers (Cannot use integers) 3. Irrational numbers NOTE: These must actually be equations. No credit will be given for expressions/polynomials.

    Algebra - Quadratic Equations - Practice Problems

    1. Add (2v^4-4v^3+2v^2+10v-6)+ (v^5+9v^3+5v^2-2v+4) + (-5v^4+v^2-6v-10) 2. Find the vertex, the line of symmetry, the maximum or minimum value of the quadric function, and graph the function. f(x)=1/2(x+5)^2+8 -The vertex is____ -The line of symmetry is x=____ -What is the maximum/ minimum value of f(x)?___ -Is the value

    Algebra problems - 1. At the kickoff of a football game, the receiver catches the ball at the left side of the goal line and runs for touchdown diagonally across the field. How many yards would he run? (football field is 100 yards long and 160 feet wide) 2. At a large size U.S company, the profit, y is related to the number of Vice Presidents, x according to the equation y=-25 +300x. What number of Vice presidents will maximize the company profit? What is the maximum possible profit in millions? ...

    1. At the kickoff of a football game, the receiver catches the ball at the left side of the goal line and runs for touchdown diagonally across the field. How many yards would he run? (football field is 100 yards long and 160 feet wide) 2. At a large size U.S company, the profit, y is related to the number of Vice Presidents,

    Word problem - Scientists are studying the temperature on a distant planet. They find that the surface temperature at one location is 25 degrees Celsius. They also find that the temperature decreases by 3 degrees Celsius for each kilometer you go up from the surface. ...

    Scientists are studying the temperature on a distant planet. They find that the surface temperature at one location is 25 degrees Celsius. They also find that the temperature decreases by 3 degrees Celsius for each kilometer you go up from the surface. Let T represent the temperature (in Celsius), and let H be the height above