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Semmy [17]
3 years ago
10

Which equations support the fact that rational numbers are closed under subtraction? Select each correct answer

Mathematics
1 answer:
noname [10]3 years ago
8 0

The rationals being closed under subtraction means that if we start with two rational numbers and subtract them, we get another rational number.  Choice c subtracts two rational numbers but gets the wrong answer, so isn't support for anything.  Choice b is rational too because the square root of 4 is 2.

Answer: b

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scalene

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Novay_Z [31]

<u><em>Answer:</em></u>

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Eben, an alien from the planet Tellurango, kicks a football from field level. The equation for the football’s height in meters,
Luden [163]

<span>The maxima of a differential equation can be obtained by getting the 1st derivate dx/dy and equating it to 0.</span>

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This problem can also be solved graphically by plotting t (x-axis) against h (y-axis). Then assigning values to t and calculate for h and plot it in the graph to see the point in which the peak is obtained. Therefore the answer to this is:

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6 0
3 years ago
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