A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing

This Question is Closed

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2My textbook says 13.13 so I was wondering how they got that. Can you show me/ Tell me how you got that answer because I'm kinda confused...

niduj123
 2 years ago
Best ResponseYou've already chosen the best response.0its easy bc its basic order of operations

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2Yeah I know NVM :) thanks

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1for this:\[\frac{8 6.2}{5 + 7(0.91)}\] you need to follow BODMAS  have you heard about that?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1it is known by other names as well, see here: http://en.wikipedia.org/wiki/Order_of_operations

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2Ok let me check it out hold on

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1look at the 2nd section "The standard order of operations"

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2Ok hold on hmm SO MANY WORDS!! D:

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2(not really so much)

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1good  so first thing to attack is the brackets

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1in this case the brackets just contain a number  so no actual operation to perform inside the brackets

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1we can therefore remove the brackets to end up with:\[\frac{8 6.2}{5 + 7(0.91)}=\frac{8 6.2}{5 + 7*0.91}\]

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2hmmm ok im confused...

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1lets jus concentrate on the denominator for now, we had:\[5+7(0.91)\]correct?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1now note that a(b) simply means a*b  agreed?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1so we can say that:\[5+7(0.91)=5+7*0.91\]

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1does that make sense now?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1good  now what should the next set of operations be?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1we have handled the brackets

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2sorry didnt mean to put >

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1it should be exponents and roots next  but you do not have any here so we go to the next one: multiplication an division

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1so what is 7 * 0.91 = ?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1correct, so now we end up with:\[\frac{8 6.2}{5 + 7(0.91)}=\frac{8 6.2}{5 + 7*0.91}=\frac{8 6.2}{5 + 6.37}\]now most people get confused here because they think the next thing to do is the division

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2wouldnt you add? or subtract?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1but what you need to remember is that you go through BODMAS for the numerator and the denominator seperately

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1hang on a second  I think I misread your question

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1I believe it was this instead:\[8 6.2 \div 5 + 7(0.91)\]

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1ok, sorry I originally interpreted it as:\((8 6.2) \div (5 + 7(0.91))\)

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1so lets start again  ok?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1\[8 6.2 \div 5 + 7(0.91)\]first step  brackets to get:\[8 6.2 \div 5 + 7(0.91)=8 6.2 \div 5 + 7*0.91\]next is exponents/root but we have none next is multiplication/division  we have both, so you did 7*0.91 = 6.37\[8 6.2 \div 5 + 6.37\]

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1so next we should do what?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1nope  have a closer look at what is still left

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2like left to right but switch add with division

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1it should be division next

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1so what is 6.2 divided by 5 = ?

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1(a quick trick to divide by 5 is to divide by 10 and then halve the result)

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1347581921786:dw

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2sorry i was drawing :P

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2ok :) so now how do i do it ? :

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1the /quick/ method or using long division like you attempted up there?

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2or like were did i mess up

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2my decimal messed me up..

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1the other way is 6.2 divided by 10 is 0.62 double that is 0.62 + 0.62 = 1.24 (sorry I incorrectly stated you halve the result up there  it should be double the result after dividing by 10)

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1ok, so we now have:\[8 6.2 \div 5 + 6.37=81.24+6.37\]

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1the rest should now be straight forward

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1but be careful with the signs

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2I got this part let me draw it for you

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2dw:1347582462471:dw

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1remember the 1.24 has a minus sign next to it

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1so this is really "1.24 + 6.37"

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2no thats not a negative its a minus

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1so it might be better to first do "8  1.24"

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1think of it in this way:\[8 6.2 \div 5 + 6.37=81.24+6.37=8+(1.24)+6.37\]

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1I was trying to explain why you had to do "1.24 + 6.37" previously

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2Yaaa i got it my text book says that but i needed to work it out thank you!!!!!

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1yes  that is the correct answer

juciystar234
 2 years ago
Best ResponseYou've already chosen the best response.2Thanks once again!! :D
Ask your own question
Ask a QuestionFind 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.