1.

If 102y = 25, then 10-y equals:(a) -1/5, (b) 1/625, (c) 1/50, (d) 1/25, (e) 1/5

Answer»

ǫᴜᴇsᴛɪᴏɴ

ɪғ 102ʏ = 25, ᴛʜᴇɴ 10-ʏ ᴇǫᴜᴀʟs:

(ᴀ) -1/5, (ʙ) 1/625, (ᴄ) 1/50, (ᴅ) 1/25, (ᴇ) 1/5

ᴀɴsᴡᴇʀ

={10}^{2y}

=({10}^{2})^{2}

={10}^{y} = 5

= 1/10y = 1/5

= {10}^{-y}= 1/5

ʜᴇɴᴄᴇ ᴏᴘᴛɪᴏɴ ᴄ ɪs ʏᴏᴜʀ ᴀɴsᴡᴇʀ


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