Question

Find k if 8! = 6!k.

Answer 1

please help

Answer 2

8*7

Answer 3

\[8=8\times 7 \times 6!\]

Answer 4

Where's the algebra?

Answer 5

oops i meant to write
\[8!=8\times 7 \times 6!\]

Answer 6

making
\[k=8\times 7\] as per estudier

Answer 7

how you know 8time 7?

Answer 8

I don't understand

Answer 9

n! = n * (n-1)! Say if u understand or not...

Answer 10

yes I understand

Answer 11

So 8! = 8*7!

Answer 12

so 8!= 8 time (8-1) ?

Answer 13

n! = n * (n-1)! so
So 8! = 8*7! and
7! = 7* 6!

Then u cancel the 6! top and bottom leaves 8*7

Answer 14

Do you see now?

Answer 15

yes

Answer 16

i understand now

Answer 17

(8*7*6*5....)/(6*5*4...)

Answer 18

ahhh I see

Answer 19

we can write it all out yes?
\[8!=8\times 7\times 6\times 5\times 4\times 3\times 2\times 1\]
and
\[6!=6\times 5\times 4\times 3\times 2\times 1\] so
\[6! \times 8\times 7=8!\]

Answer 20

ok thanks

Answer 21

i guess the answer is k=56