Question

in △JKL, KM is an altitude.

What is the length, in units, of JK?

7√5

5√7

12

7

Answer 1

THis is all geometric means. You're only going to use the first one for this problem, here just solve the proportions.
\[\frac{JM}{JK} = \frac{JK}{JL}\]\[\frac{LM}{LK} = \frac{LK}{LJ}\]\[\frac{LM}{MK} = \frac{MK}{JM}\]

Answer 2

Just cross multiply.
\[JK^{2} = JM \times JL\]\[LK^{2} = LM \times LJ\]\[MK^{2} = LM \times JM\]

Answer 3

i got 5√7

Answer 4

Yup :)

Answer 5

thanks

Answer 6

np :)