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kupik [55]
3 years ago
10

Evaluate 1.3 + 12 + 2.1 =​

Mathematics
1 answer:
GenaCL600 [577]3 years ago
3 0

Answer:

The answer is 15.4

Step-by-step explanation:

hope this helps

1.3 + 12 =13.3+2.1=15.4

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The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

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Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

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You can solve this for t:

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The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

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2 years ago
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Step-by-step explanation:

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7 0
3 years ago
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3 years ago
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