3 years ago

Write the equation for a parabola with a focus at (0,-5) and a directrix at y=-3

Mathematics

1 answer:

Olenka [21]3 years ago

7 0

-4y -16 = x^2
All done

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The formula T = 1/f relates the period of a sound wave T to its frequency f. Solve this formula for f.

Liono4ka [1.6K]

$T=\frac{1}{f}$

$multiply \space\ both \space\ sides \space\ by \space\ f$

$Tf=1$

$divide \space\ both \space\ sides \space\ by \space\ T$

$f=\frac{1}{T}$

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3 years ago

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Which number is in the set of integers but is not in the set of whole numbers?

klemol [59]

Answer:

Step-by-step explanation:

5 and 1/2 is not a whole nubmer in this list

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nirvana33 [79]

Answer:

5.3

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Use Pyth Theorem

a^2 + b^2 = c^2

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You can check your work by plugging both answers into both of the original equations. :)

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