Question

ex 1 va rooooooooooog

Answer 1

a)
9/x=x/4
x^2=36=>x= 6 
b)
x/16=25/x
x^2=16*25
x^2=400
x=20 
c)
3/x=x/27
x^2=3*27
x^2=81=>x=9
d)
0,25/x=x/9
x^2=0,25*9
x^2=2,25
x=1,5
e)
x/0.7=6,3/x
x^2=0,7*6,3
x^2=4,41
x=2,1
f)
[tex] \sqrt{2}/x=x/50 \sqrt{2} x^2= \sqrt{2}*50 \sqrt{2} x^2=50*2 x^2=100 x=10 [/tex]