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MrRissso [65]
2 years ago
6

Help me, please. Don't just claim my points, it's irritating

Mathematics
2 answers:
erastova [34]2 years ago
5 0

Answer:

8.239x10^-5

so the answer is A

Step-by-step explanation:

trust me

ps. use photomath on phone

valentina_108 [34]2 years ago
3 0

Write both number with the same power of 10, factor out that power of 10 (since it's common to both terms), then simplify to standard scientific notation (that is, <em>a</em>.<em>bcd</em>... × 10⁻ⁿ):

(8.28 × 10⁻⁵) - (4.1 × 10⁻⁷) = (828 × 10⁻⁷) - (4.1 × 10⁻⁷)

… = (828 - 4.1) × 10⁻⁷

… = 823.9 × 10⁻⁷

… = 8.239 × 10⁻⁵

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