i need help with this problem because i cant look the answer up in the back of the text book

8 years agoyeah go ahead dear friend

8 years agofor christmas steve bought 5 more cds than dvds as presents for his freinds. he bought 21 in all . how many cds did he buy?

8 years agomeans number of cd together with dvd is equal to ---------how much

8 years agoIf you write these as equations, it helps in the analysis. CD=DVD+5 CD+DVD=21 CD=21-DVD 21-DVD=DVD+5 16=2DVD DVD=8 Which means CD=13. We then check if the solution satisfies the original equation. 8+13=21 and there are 5 more CDs than DVDs :)

8 years agoSo CDs = DVDs + 5 CDs + DVDs = 21 Substitute. DVDS + 5 + DVDs = 21 2DVDs = 16 DVDs = 8 CDs = 13

8 years agoonn the paper ir says that step1. define veriable step2. right question step3.solve step4.wright concution sentence

8 years agoso u have variable CD & DVD

8 years agoand u purchased 5 CD's more than the DVD so No. of CD = No. of DVD + 5

8 years agoNow total no is equal to 21

8 years agoso on my paper i should have x=x+5

8 years agoright

8 years agonow what is x = it is number of dvds

8 years agoNot x=x+5, x=y+5 is more appropriate.

8 years agoyes dear helper cd is more No. of CD = No. of DVD + 5

8 years agook that was a good tip polrek

8 years agonow i get it

8 years agowe can keep No. of CD = x +5, No. of DVD x

8 years agox = x - 5 -x -x -------- -5 whould be the answer

8 years agono no we have to add number of cd with no of dvd

8 years agoi.e., x + x + 5 = ?

8 years ago7x

8 years agono wait

8 years agono 5 can't be added into x because it dint have x

8 years ago2x+5

8 years agothats the answer

8 years agowhich is equal to?

8 years agowhat do you mean to equal

8 years agomeans total i.e., no. of cd + no. of dvd = ?

8 years agoread question

8 years agooh

8 years ago5 divided by 2

8 years ago2.5

8 years agoim confused

8 years agono dear 2x+5 = 21

8 years agonow solve it

8 years agoi forgot the 21 i didnt see that sorry

8 years agoanswer is 16

8 years agonow tell me x is equal to ?

8 years ago9

8 years agono look at the equation carefully

8 years ago2x = 21 - 5 => 2x = 16 => x = 16 /2 => x = ??

8 years agoanswer is 8

8 years agogr8 u did it now u got to know how to reach this point

8 years agobut x is number of dvd so number of cd will be equal to ??

8 years agoi feel like an idiot because it was so obvios but i got it right finally thank you very mutch

8 years ago13 cds

8 years agono of cd = no of dvd+ 5 no of cd = x+ 5

8 years agoi want to give u another medal but i cant not possible here

8 years agoif u having any other question then share........

8 years agoi wish i could give you a real well the one with the the rectangle i still ned help with

8 years agoyeah go ahead by the way whts the time there

8 years agoi have 408=134+1x

8 years ago5:50 im in virginia

8 years agook that one perimeter = 2 * (L+W) => 408 = 2*(L+W)

8 years agoi had seen a movie that was from virginia...... A Walk To Remember...................ultimate one

8 years ago408 = 134 + X -134 -134 ------------- 274=1x --- --- 1 1 x=274

8 years agosolve the equation...b4 i complete my cigarrette give me answer 408 = 2*(L+W) L is given in the question

8 years ago408 = 2 x (L+W)

8 years agoL

8 years ago=134

8 years ago134X274=36,716cm sqaurd

8 years agoyes L = 134 L+W = 408/2 L+W = ??

8 years ago134+274=??? what does the /2 mean

8 years agodoes that mean sqaurd

8 years agomeans 408 divided by 2 =

8 years ago204

8 years agothen 204 = 134 + w

8 years agooh 204-134=70 70+134=204

8 years agogr8 so width is equal to ??

8 years ago274

8 years agono

8 years ago204

8 years agono 70 is the width

8 years agoyes u r right. 70 cm is the width hey can i ask u sumthing if u dont mind

8 years agoso 134 x 70

8 years agoyou can ask

8 years agono it will give u the area of the rectangle........ whts ur good name and how old u r?

8 years agojoey pedro 14 9th grade

8 years agonice name

8 years agoyeah you whant the area of the rectangle the question says that you to find the area

8 years agoyes then area is equal to 134*70 = 9380 cm^2

8 years agoyes finally.

8 years agonext question

8 years agoare you a teacher ar a student? you should be a teacher

8 years agoi have too go dinner time

8 years agoyeah u got it ryt.....but i dont teach school kids i teach old post graduate fellows

8 years ago