A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Which equations are equivalent to the given equation? 0.4y=10
Choose all answers that are correct.
A. 0.4y=10÷0.4
B. 0.4y÷0.4=10÷0.4
C. 0.4y*2.5=10*2.5
D. 0.4y÷0.4=10*0.4
anonymous
 one year ago
Which equations are equivalent to the given equation? 0.4y=10 Choose all answers that are correct. A. 0.4y=10÷0.4 B. 0.4y÷0.4=10÷0.4 C. 0.4y*2.5=10*2.5 D. 0.4y÷0.4=10*0.4

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0First, what can you do to get y by itself?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm completely lost here.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Haha np. We're basically trying to find different ways to simplify. If we have 0.4y=10 we can get y by itself by dividing 0.4 Ex: 0.4y/0.4 gets y alone. But what you do to one side, you must do to the other. So 0.4y/0.4 = 10/0.4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Does that make sense at all?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So B would be one of the answers?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That would be correct! So when we solve the equation 0.4y=10 we end up with y=10/0.4 y=25. Do you see any other equations that get the same answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well lets try it out. 0.4y = 10/0.4 This simplifies out to be 0.4y = 25 Then, divide 0.4 from y, and (what you do to one side you do to the other) So you're gonna end up with y= 24/0.4 which gives you y=62.5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It looks similar, so its kind of tricky

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0C is another correct answer. 10*2.5=25

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Good job!! 0.4y x 2.5 = 10 x 2.5 0.4y/2.5 = 10 x2.5/2.5 (You do this to cancel it out) So you're gonna end up with 0.4y = 10 which brings you back to your original equation :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I believe A & C are the only correct answers. Am I correct?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well remember we proved A to be wrong, because it actually equals 62.5 B and C are the correct ones haha

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0If my question is answered and the only correct answers are B & C then I thank you for helping me with my question and I will reward you with a medal.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I believe those are the only correct ones! We proved A untrue, and D just seems to be all sorts of wrong. So no problem!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you very much.
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.