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Determine if the following matrices are in reduced row echelon form. If it is not reduced, specify which criteria it fails to meet.
Find the measure of an angle whose supplement is 10 degrees more than twice it's complement. Let 90- x equal the degree measure.
The Initial Concentration of Pollutants in the Pond.Problem: An environmental group estimates that the amount of pollution in a pond will decrease by 10%
Linear Algebra Problem.Find values of a, b and c ( if possible) such that the system of linear equations has (a) unique solution
Linear Equations in One Variable.Solve and check the following linear equations:
Linear equations with constants in denominators. Solve each equation.
Determine the x- and y-intercepts of the given equation. Show your work. Then plot the intercepts, and graph the line. -5x + y = 0
Create a Linear Equation.Write a linear equation describing the number of exports each year with x=91 representing
If trend for the depreciation of the press continued, what would be its value in the year 2015? Show how you obtained your answer using the equation you found.
Solving Systems of Equations - Real World Example.There are many applications used in the area of solving systems of equations.
Identify a pair of values of x and y for which this statement is true and another pair of values for which it is not true.
Solve each exponential equation. Express the solution set in terms of natural logarithms. Then use a calculator to obtain a decimal approximation.
Open and Closed Sets.Decide whether the following sets are open, closes or neither.
David is planning to sell his house which he bought in 1997 for $150,000, and he wants to make at least $80,000.
How many ways can you write a whole number as the sum of consecutive whole numbers? For instance 9 = 5+4 and 9 = 2+3+4.
If postage stamps only had the denominations 5 cents and 7 cents, what amounts of postage could we buy? What if they were 3 cents and 5 cents?
Determine the equation of the line described. Put the answer in the slope -intercept form, if possible. Through (-7,-7), parallel to 5x-4y=-19
An equation of the form ax2 + bx + c, where a?0, is called a ................. equation.
Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0.
Systems of Equations and interpretation of graphical data.The bar graph shows the percentage of Americans who used cigarettes, by ethnicity, in 1985 and 2002.
What is the speed at which the object falls and what is the force of the impact (it would be hitting a hard concrete or granite floor).
Write an equation of the line containing the given point and perpendicular to the given line. Express your answer in the form y= mx+b (3,9); 5x+y=6
Algebra Problems on Linear Equations.Determine whether each pair of equations represents parallel lines.
Solving by graphing, using the quadratic formula, completing the square and factoring. when might each method be appropriate? Which method do your prefer?
A lumber yard receives 2 X 4 studs in a bundle that contains 25 rows (or layers) of studs with 20 studs in each row.