Question

if X upon y = 3 upon 5 raise to the power minus 3 into 5 tourist the power minus 3 then find X by Y is the power minus 1​

Answer 1

Answer:

Given,

3x=5y=75z

3x=5y=75z=k

⇒3=kx1,5=ky1,75=kz1

52×3=kz1

(ky1)2×(kx1)=kz1

By comparing powers 

⇒y2+x1=z1

xy2x+y=z1

∴z=

Answer 2

Answer:

27/8 or (3/2)^3 or 1.5^3

Step-by-step explanation:

x/y= (3/5)^-3 * (5/2)^-3

a^m *b^m = (ab)^m

x/y= (15/10)^-3

x/y= (10/15)^3=(2/3)^3

x/y= 8/27

(x/y)^-1 = (8/27)^-1

= 27/8 or (3/2)^3 or 1.5^3