Question

WILL MEDAL!!!!

A company sells cardboard that is nine and one-eighth millimeters thick. Write an equation to solve for the number of sheets of cardboard, c, in a pile that is two hundred fifty-five and one-half millimeters thick. What must be done to both sides to solve the equation?

Answer 1

@HeroOfLove111
@Hero
@amistre64
@highschoolmom2010
@boricua5
@ninaesb

Answer 2

what equation do you come up with?

Answer 3

i didnt i dont understand it

Answer 4

spose we work with simpler numbers and a different medium.

if you have 1 dollar that is worth $1, how many dollars would it take to have $500? how would you solve this?

Answer 5

dont you multiply 1 by 500
and you would need to get 500 $1 bills in order to have 500$

Answer 6

yes, in this case we have cardboard that is equal to 9 1/8

and we want to find how many cardboards equal up to get 255 1/2

so same concept, 9 1/8, times 'c', is equal to 255 1/2

Answer 7

so it would be the 255 1/2???

Answer 8

are the fraction bad for you?

Answer 9

yea they are

Answer 10

just think of them as a number, any number to get the feel for it. in hindsight a 5 dollar bill might have been better to use as an example :)

lets say c = 9, how many cs does it take to make 225?

Answer 11

28.33333333333333

Answer 12

\[\underbrace{c+c+c+c+...+c}_{n~times}=225\]
but c=9 sooo
\[\underbrace{9+9+9+9+...+9}_{n~times}=225\]
or written another way:\[9n=225\]
dividing both sides by 9 gets us the value of n, agreed?

Answer 13

yes

Answer 14

then this is how our equation sets up, but with the fraction involved :)

and by the way 225/9 = 25, not 28.333333

Answer 15

so,\[(9\frac18)n=225\frac12\]
divide both sides by 9 1/8
\[n=\frac{225\frac12}{9 \frac18}\]

Answer 16

okay