Algebra Questions
Not what you're looking for?
Problem 19
Find the correct graph.
Problem 20
Problem 29
Problem 30
Problem 42
Problem 47
Different interest rates. Mrs. Brighton invested $30,000 and received a total of 2,300 in interested. If she invested part of the money at 10% and the remainder at 5%, then how much did she invest at each rate?
Problem 41
Nickels and Dimes. Winborne has 35 coins consisting of dimes and nickels. If the value of his coins is $3.30, then how many of each type does he have?
Problem 18 Graph each system of inequalities
>
Problem 39 Graph
Purchase this Solution
Solution Summary
The solution includes a word document and an excel sheet that show step by step how to derive equations from word problems, finding the solution to a system of equations and a system of inequalities.
Solution Preview
Please see the attached documents for a better formatted solution.
1)As a general rule, always re-write the equations in slope intercept form before graphing, so that you have the equations in the form y = mx + b
2) Usually 5 points would be enough to graph, so create a table with any 5 x values, and solve for y. To be able to see a full picture of the graph, choose 2 negative values for x, x = 0, and 2 positive values
3) Graph the equations
Problem 19
Find the correct graph.
4x -5y = 2
4x = 2 + 5y
4x - 2 = 5y
3y - x = -3
3y = x -3
x y y
-10 -8.4 -4.33333
-5 -4.4 -2.66667
0 -0.4 -1
5 3.6 0.666667
10 7.6 2.333333
Problem 20
4x + 5y = -2
5y = -2 - 4x
4y - x = 11
4y = 11 + x
...
Education
- BA, Ain Shams University, Cairo Egypt
- MBA, California State University, Sacramento
Recent Feedback
- "ty i have more need help with"
- "ty i have jmore i need help with"
- "great help"
- "excellent help"
- "Very helpful and easy to understand."
Purchase this Solution
Free BrainMass Quizzes
Probability Quiz
Some questions on probability
Solving quadratic inequalities
This quiz test you on how well you are familiar with solving quadratic inequalities.
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts