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Ratling
1 month ago
11

Estimate the value of 102.3 divided by 4.7

Mathematics
2 answers:
Leona [12.6K]1 month ago
8 0

Response:

20

Detailed breakdown:

Zina [12.3K]1 month ago
4 0

20   102.3 rounded down is 100 4.7 rounded up is 5.  100 divided by 5 equals 20, as 5 times 20 equals 100.

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23 days ago
. A hawk drops its prey from a certain height above the ground.The height, h metres, of the prey can be modelled by h = 4 + 11 t
Leona [12618]

Answer:

The hawk releases the prey from a height of 4 meters.

It takes the prey 4 seconds to reach the ground.

Step-by-step explanation:

The equation gives insights about the height of the prey at any time starting from the moment it is dropped. Thus, to determine the drop height, we evaluate the expression at time equals zero (the drop moment). This answers the first question:

h=4+11t-3t^2\\h=4+11\,(0)-3\,(0)^2\\h=4\, \,meters

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This results in a quadratic equation that can be solved via the quadratic formula:

h=4+11t-3t^2\\0=4+11t-3t^2\\-3t^2+11t+4=0\\t=\frac{-11+-\sqrt{11^2-4\,(-3)(4)} }{2\,(-3)} \\t=\frac{-11+-\sqrt{121+48} }{-6} \\t=\frac{-11+-13 }{-6} \\t= 4\,\,and \,\, t=-\frac{1}{3}

Since negative time values are impractical, we select the positive 4 (4 seconds)

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