3 years ago

Derive the equation of the parabola with a focus at (−5, −5) and a directrix of y = 7.

Mathematics

1 answer:

asambeis [7]3 years ago

3 0

Answer:

Answer: The equation of the parabola is (x+5)^2=-24(y-1)(x+5)

=−24(y−1) .

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Answer:

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Step-by-step explanation:

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3 years ago

What is the coefficient of the x5y5-term in the binomial expansion of (2x – 3y)10? 10C5(2)5(3)5 10C5(2)5(–3)5 –10C5(2)5(–3)5 10C

butalik [34]

ANSWER

$10C_5(2)^{5}( - 3)^5$

EXPLANATION

The given binomial expansion is:

${(2x - 3y)}^{10}$

Compare this to

${(a + b)}^{n}$

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${x}^{5} {y}^{5}$

This implies that, r=5.

The terms in the expansion can be obtained using

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We substitute the given values to obtain;

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$T_{6}=10C_5(2x)^{5}(3y)^5$

$T_{6}=10C_5(2)^{5}( - 3)^5 {x}^{5} {y}^{5}$

Hence the coefficient is;

$10C_5(2)^{5}( - 3)^5$

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3 years ago

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FromTheMoon [43]

Answer:

Step-by-step explanation:

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