Question

There are x feet in y miles. Which of the following is an expression for the number of feet in z miles?

A. xz/y
B. yz/x
C. y/xz
D. x/yz
E. xyz

Answer 1

hint:

x feet = y miles

x/y feet = 1 mile

Answer 2

Can I get another hint...

Answer 3

I am sorry..I don't know this one....I will stand back and watch

Answer 4

if 1 mile = x/y feet

then z miles = ???

how do we go from 1 to z (what's one way)

Answer 5

say 1 mile = 3 ft (obviously not true, but just go with it)

then 2 miles = 6 ft (multiply both sides by 2)

3 miles = 9 ft (multiply both sides by 3)

etc etc

Answer 6

and 4 miles = 16 ft and 5 miles =25 ft....I just don't know where the z comes in

Answer 7

so if 1 mile = 3 ft, then multiplying both sides by z would give you

z miles = 3z ft

Answer 8

see how I did that?

Answer 9

yes

Answer 10

if 1 mile = x ft, then z miles = xz feet

again I got this by multiplying both sides by z

Answer 11

Would it be xz/y?

Answer 12

yep

Answer 13

Thank you!

Answer 14

np

Answer 15

like I said..he is good

Answer 16

Haha yeah :)

Answer 17

it's not too bad really once you get used to the notation

Answer 18

You explain it better than my teacher at my academy

Answer 19

I'm glad I do (although I do with you had better teachers over there)

Answer 20

Yeah its only my math teacher though.

Answer 21

I gotcha

Answer 22

THank you again :)

Answer 23

sure thing