3 years ago

-31+(-42)= 38+(-43)=

Mathematics

1 answer:

Mice21 [21]3 years ago

3 0

Answer:

-31+(-42)= -31-42 = -73

38+(-43)= 38-43 = -5

(-) - (-) = +

(-)+(-) = +

(-)+(+) = -

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After 3 minutes, a submarine had descended to −320 feet. After 8 minutes, the submarine had descended to −420 feet. Assuming a l

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Answer:

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Step-by-step explanation:

The depth function is:

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This means that $d(3) = -320$ . So

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$b = -320 - 3m$

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And

$b = -320 - 3*(-20) = -260$

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