hatemee hatemee
  • 24-04-2022
  • Mathematics
contestada

If 10^2y = 25, then 10^-y equals:
(a) -1/5,
(b) 1/625,
(c) 1/50,
(d) 1/25,
(e) 1/5​

Respuesta :

Аноним Аноним
  • 24-04-2022

solution:

[tex] {10}^{2y} = 25[/tex]

[tex] {(10)}^{y2} = {5}^{2} [/tex]

[tex] {10}^{y} = 5[/tex]

[tex] \frac{1}{10 {y} } = \frac{1}{5} [/tex]

[tex] {10}^{ - y} = \frac{1}{5} [/tex]

answer= option e.

Answer Link
ciberneticotrix ciberneticotrix
  • 24-04-2022
Answer
(e) 1/5

Explanation
5^2=5*5=25
Answer Link

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