10 is the geometric mean of 4 and what number?

2 ⤊

2006-10-10 11:08:50 · 4 answers · asked by Roberta A 1 in Science & Mathematics ➔ Mathematics

same concept as the last question

10 = sqrt(4x)
Square both sides
100 = 4x
x = 25

2006-10-10 11:12:02 · answer #1 · answered by Anonymous · 1⤊ 0⤋

2006-10-10 18:11:01 · answer #2 · answered by bruinfan 7 · 0⤊ 0⤋

GM^2=a*b
b=10x10/4=25
b=25
hence the second no. is 25

2006-10-10 18:21:03 · answer #3 · answered by Anonymous · 1⤊ 0⤋

16 is the answer

10=(x+4)/2
*2 *2
-----------------
20=x+4
-4 -4
--------------
16=x

Try it out, it works

2006-10-10 18:18:09 · answer #4 · answered by chemistrygirl 2 · 0⤊ 1⤋