ladponder
ladponder ladponder
  • 20-10-2017
  • Mathematics
contestada

Which value of x makes the numerical sentence true? 25^ 1/2 × 5 ^–3 = 5 ^x

Respuesta :

asuadg31
asuadg31 asuadg31
  • 20-10-2017
5^-3=0.008
1/2=0.5
0.5*0.008=0.004
5/0.004=1250
Answer Link
choixongdong
choixongdong choixongdong
  • 20-10-2017
25^1/2 × 5^–3 = 5 ^x
(5^2)1/2 
× 5^–3 = 5^x
5^1 × 5^–3 = 5^x
5^-2 = 5^x
-2 = x
or 
x = -2

answer
x = -2 makes the numerical sentence true
Answer Link

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