A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
2z^2+7z15=0
What is the solution set for the equation?
a. {5,3/2}
b. {5,3/2}
c. {5, 3}
d. {5,3}
anonymous
 5 years ago
2z^2+7z15=0 What is the solution set for the equation? a. {5,3/2} b. {5,3/2} c. {5, 3} d. {5,3}

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Two ways to solve this: a) Solve the equation and look for a pair that contains both of those b) Try to plug in each solution from each set and choose the solution set whose all solutions really solve the equation

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Clarification for step b: if you plug in e.g. z=5 and find out that the equation holds, you know the answer is either a or d. If it doesn't hold, it is either b or c. Doing similar reasoning for other values enables you to quickly rule out incorrect alternatives.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay. Thanks for clearing that up.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Since these look like school problems, see if it can be factored first. This one factors as follows: (z + 5) (2 z  3)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.