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2 years ago

Quadratics easy question. Please help

Mathematics

2 answers:

Vikki [24]2 years ago

7 0

Answer:

1.62 seconds

Step-by-step explanation:hope i helped

andre [41]2 years ago

3 0

Answer:

1.62 seconds

Step-by-step explanation:

h = -16t² + 24t + 16.4

The initial height is 16.4 feet. The snowboarder lands 3.2 feet below this, or at a height of 13.2 feet.

13.2 = -16t² + 24t + 16.4

16t² − 24t − 3.2 = 0

Solve with quadratic formula:

t = [ -(-24) ± √((-24)² − 4(16)(-3.2)) ] / 2(16)

t = [ 24 ± √(576 + 204.8) ] / 32

t = 1.62

The snowboarder is in the air for 1.62 seconds.

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