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Andre45 [30]
2 years ago
7

Please can you solve this questions for me!! It's important ​

Mathematics
1 answer:
Pavel [41]2 years ago
6 0

15:-

\\ \qquad\quad\sf\longmapsto \dfrac{x^5y^6}{xy^2}

\\ \qquad\quad\sf\longmapsto x^{5-1}y^{6-2}

\\ \qquad\quad\sf\longmapsto x^4y^4

16:-

\\ \qquad\quad\sf\longmapsto \dfrac{x^2y^5}{xy^4}

\\ \qquad\quad\sf\longmapsto x^{2-1}y^{5-4}

\\ \qquad\quad\sf\longmapsto xy

17;-

\\ \qquad\quad\sf\longmapsto \left(\dfrac{4x^5y}{16xy^4}\right)^3

\\ \qquad\quad\sf\longmapsto (4^{1-2}x^{5-1}y^{1-4})^3

\\ \qquad\quad\sf\longmapsto (4^{-1}x^4y^{-3})^3

\\ \qquad\quad\sf\longmapsto 4^{-3}x^{12}y^{-9}

18:-

\\ \qquad\quad\sf\longmapsto \left(\dfrac{5x^3y}{20xy^5}\right)^4

\\ \qquad\quad\sf\longmapsto (4^{-1}x^{2}y^{-4})^4

\\ \qquad\quad\sf\longmapsto 4^{-4}x^8y^{-16}

19:-

\\ \qquad\quad\sf\longmapsto y^{-7}

\\ \qquad\quad\sf\longmapsto \dfrac{1}{y^7}

20:-

\\ \qquad\quad\sf\longmapsto 7^{-2}

\\ \qquad\quad\sf\longmapsto \dfrac{1}{7^2}

\\ \qquad\quad\sf\longmapsto \dfrac{1}{49}

21:-

\\ \qquad\quad\sf\longmapsto \dfrac{1}{x^{-5}}

\\ \qquad\quad\sf\longmapsto x^5

22:-

\\ \qquad\quad\sf\longmapsto \dfrac{1}{2^{-4}}

\\ \qquad\quad\sf\longmapsto 2^4

\\ \qquad\quad\sf\longmapsto 16

23:-

\\ \qquad\quad\sf\longmapsto x^5\times x^{-1}

\\ \qquad\quad\sf\longmapsto x^{5-1}

\\ \qquad\quad\sf\longmapsto x^4

24:-.

\\ \qquad\quad\sf\longmapsto x^{-6}

\\ \qquad\quad\sf\longmapsto \dfrac{1}{x^6}

25:-

\\ \qquad\quad\sf\longmapsto x^9(x^{-7})

\\ \qquad\quad\sf\longmapsto x^{9-7}

\\ \qquad\quad\sf\longmapsto x^2

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Answer:

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Step-by-step explanation:

Let a -1, so that the leading coefficient is positive

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So, 2 and 8 taken as the leading coefficients of  two binomial factors.

For constant  405, possible factorizations are (81\times 5, 27 \times 15, 9 \times 45).

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Thus ball hits the ground after 4.5 sec

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