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lara [203]
3 years ago
9

If 10-10ˣ=9.9, find x

Mathematics
1 answer:
madam [21]3 years ago
3 0

we are given

10-10^x=9.9

we can move 10 on right side

-10^x=9.9-10

-10^x=-0.1

we cancel -1

10^x=0.1

we can rewrite right side

10^x=10^{-1}

we can compare exponents

and we get

x=-1.............Answer

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