kayla114035
14.12.2020 •
Mathematics
A triangular park has side lengths of 3x + 7, 20x and 2(x – 4). Write a simplified expression to represent the perimeter of the park.
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Ответ:
I explore this idea a bit. obviously x < 5 (because 5-x has to be positive.
2x-5 > 0 is a requirement, also, so x > 2.5 is required
Ответ:
see explanation (please confirm if I read you problem correctly)
Step-by-step explanation:
150 kilometers
60 kph
tank is 20 liters
6 km/l
150/6 = 25 liters needed
$60/l
you will need to get 5 more liters of fuel
total cost 25 x .60 = $15