Solving Equations and Word Problems
Not what you're looking for?
Please see attached file for full problem description. Please show me how to get solution for problems.
1.
2. Winston can mow his dad's lawn in 1 hour less than it takes his brother Willie. If they take 2 hours to mow it when working together, then how long would it take Winston working alone?
3. Solve equation for x
4. Find all real and imaginary roots of
5. Compute value of the discriminant and give the number of real solutions to the quadratic equation
Discriminant:
Real Solutions:
6. Solve
7. When a ball is thrown, its height in feet after seconds is given by the equation
,
where is the initial upwards velocity in feet per second. If feet per second, find all values of for which feet. Do not round any intermediate steps. Round your answer to decimal places.
8. graph the solution to the quadratic inequality
.
9. Graph the parabola. Need the vertex and four points.
10. Graph the parabola. Need the vertex and four points.
11. Graph the parabola. Need the vertex and four points
12. Graph the inequality. Need the vertex and four points
13. The function h is defined by the following
H(x) = 4x+2
Complete
X H(x)
-4
-3
0
2
3
14. The function f is defined by the following function table. Graph the function.
X f(x)
-3 1
0 0
1 0
3 3
4 -1
15. Solve the following equation for x by using the quadratic formula.
16. Compute value of the discriminant and give the number of real solutions to the quadratic equation
Discriminant
Number of real numbers
17. Graph the domain of function g defined by
18. Find the x-intercept(s) and the coordinates of the vertex for the parabola
19. Find the roots of the quadratic equation
20.Solve where u is a real number. Simplify as much as possible.
21. Graph equation
22. Write the sets using interval notation
a. , where
b.
23. Graph set on a line.
24. Solve where u is a real number. Simplify answer as much as possible.
Purchase this Solution
Solution Summary
Equations and word problems are solved. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.
Solution Preview
Please see the attached file for the complete solution.
Thanks for using BrainMass.
1.
Let
When u = 3,
When u = 6,
Solutions:
2. Winston can mow his dad's lawn in 1 hour less than it takes his brother Willie. If they take 2 hours to mow it when working together, then how long would it take Winston working alone?
Winston working alone: x hours
Then Willie working alone: (x +1) hours.
Assume the lawn is A square feet.
The speed of Winston is . The speed of Willie is .
When working together, the rate at which they are working is . So it takes them hours to finish the lawn.
So
Then multiplying (2x + 1) to both sides of equation:
Discard the negative result.
Then it takes hours or about 3.56 hours to finish the lawn when Winston working alone.
3. Solve equation for x
Simplify the equation
4. Find all real and imaginary roots of
5. Compute value of the discriminant and give the number of real solutions to the quadratic equation
Discriminant:
Real Solutions: two repeated roots, or say 1 solution since the discriminant is 0.
6. Solve
7. When a ...
Purchase this Solution
Free BrainMass Quizzes
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Solving quadratic inequalities
This quiz test you on how well you are familiar with solving quadratic inequalities.
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.