Explore BrainMass

Explore BrainMass

    Basic Algebra

    BrainMass Solutions Available for Instant Download

    Quadratic Equations Parabolic Paths

    A rocket is launched from the ground and follows a parabolic path represented by the equation y=-x(squared)+10x. at the same time, a flare is launched from a height of 10 feet and follows a straight path represented by the equation y=-x+10. Using the accompanying set of axes, graph the equations that represent the paths of the r

    Logarithms

    How do I solve an equation with 2 logarithms added on the left-hand side and only a number on the right-hand side? The process is shown using the example log4(x+4)+log4(x-8)=3.

    Translating to expressions

    Jeff's Gas Station sells regular unleaded gasoline for a dollar per gallon and premium gasoline for $1.76 less than twice the amount of regular unleaded gasoline. What is the cost of 1 gallon of premium gasoline?

    Cyclic Groups - Modern Algebra

    (a) Let F = { (matrix with first row; a 0, second row is 0 a) : a is an element of R Show that F is a field and that F ~= R (b) Give the definition of a cyclic group Prove that every subgroup H of a cyclic group G =<a> is itself cyclic

    Looking for the value of x.

    If x times 5 gives the same result as x less than 5, what is the value of x? (A)5 (B)6 (C)4/5 (D)5/6 (E) -5/4

    Bacterial growth word problem using logarithms.

    The number of bacteria N in a culture is given by the model N=250e^kt, where t is the time in hours, with t=0, corresponding to the time when N=250. When t=10, there are 280 bacteria. How long does it take the population to double in size? To triple in size?

    male enrollment of a college in an algebraic word problem.

    A state college has a total freshman enrollment of 2,200 students, of whom 42% are male. If the remainder of the total school enrolment of 6,800 students is divided evenly between male and female, determine the total male enrollment in the school.

    Algebra Word Problem: Percent Increase

    A start-up firm's sales increased by 350% from its first year of operation to its third year total of $1.68 million. What were its total sales in its first year of operation?

    Number Magic Algebraic Explanation

    Pick a number from 1 to 9 (0<x<10). Multiply it by 2. Then add 3 to the result. Now multiply this number by 50, then add 1853 and subtract the year of you birth. You now should have a 3 digit number. The first digit is the number you picked above, and the last 2 digits are your age after your birthday this year (2003). How is t

    Square Roots Multiplied

    Square root of 100 plus the square root of 200 plus the square root of 300 multiplied by the square root of 400 equals ?