If x is the mean proportional of 4 and 9, then x could be....._______?
choices:
a)4
b)3
c)6
d)36
didn't kno how to solve this, HOW do you solve this?
choices:
a)4
b)3
c)6
d)36
didn't kno how to solve this, HOW do you solve this?
-
a:b:c
Here, b is the mean proportional. The formula says b^2=ac
In your problem,
4:x:9
or, x^2=4*9
or, x^2=36
or, x=sqrt(36)
or, x=6
Your answer is c) 6.
Hope this helps!!!
Here, b is the mean proportional. The formula says b^2=ac
In your problem,
4:x:9
or, x^2=4*9
or, x^2=36
or, x=sqrt(36)
or, x=6
Your answer is c) 6.
Hope this helps!!!