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ipn [44]
3 years ago
12

PLS HELP ME

Mathematics
1 answer:
vlada-n [284]3 years ago
8 0

Answer:

  • 3.5 seconds

Step-by-step explanation:

<u>Given function:</u>

  • h(t) = 3(4t - 2)(- t + 4)

<u>The time the javelin is in the air is the difference of zero's of the function:</u>

  • 3(4t - 2)(- t + 4) = 0
  • (4t - 2)(- t + 4)
  • 4t - 2 = 0 ⇒ t = 0.5
  • -t + 4 = 0 ⇒ t = 4

<u>Time in the air:</u>

  • 4 - 0.5 = 3.5 seconds

<em>It is better visible on the graph</em>

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