Yshiid
Answered

the extreme of a proportion are
9 and 16. if the means of the
proportion are equal, what is the
value of the mean?

A) 15
B)14
C)12
D)10

Sagot :

Anniecaid
9 and 16 are the extreme , let n be the mean so,

9 : n = n :16
(9)(16) = (n)(n)
n² = 144            (square root of 144 is 12)
n = 12

the mean proportional between 9 and 16 is 12.
the final answer is letter C.