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brilliants [131]
1 year ago
11

A train travels at a speed of 140km per hour. How many kilometers does it travel in:

Mathematics
1 answer:
MrRa [10]1 year ago
8 0

Answer:

140kilo in 1hr and 280kilo in 2hr and 420kilo in 3hr and 28kilo in 20 min.

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Write the following expression. The quantity 81 minus 5k, squared
Stella [2.4K]

Answer:

81-25k²

Step-by-step explanation:

We need to write the expression for "The quantity 81 minus 5k, squared".

Square of any number x is given by x².

Square of 5k is given by : (5k)²= 5²×k²=25k²

Now subtract 25k² from 81.

It means we get : 81-25k². It is required expression.

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3 years ago
Two bowls of pasta at a restaurant serve 3 people. How many bowls of pasta should be ordered for 12 people?
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12 people divided by 3 people = 4

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therefore, 8 bowls serve 12 people
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frosja888 [35]

9514 1404 393

Answer:

  • y = -16
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Step-by-step explanation:

The direct proportion equation is ...

  y = kx

where k is the constant of proportionality. Here, you're told k=-2, so the equation is ...

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For x=8, the value of y is ...

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3 years ago
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