Question

please help me this question
$do \: as \: directed \\ 1 \: simplify(3 {}^{10 } \div {3}^{7} ) \times {3}^{ - 5} (2) \: evaluate \frac{2 {}^{3} }{2 {}^{5} } \times \frac{3 {}^{5} }{3 {}^{3} }$
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Answer 1

Answer:

Step-by-step explanation:

(1) Useful equations are:

   a^m * a^n = a^(m+n)

   a^m / a^n = a^(m-n)

   So, (3^10 / 3^7) * 3^(-5)

          3^3 * 3^(-5)

          3^(-2)

(2) 2^3 / 2^5 * 3^5 / 3^3

    2^(-2) * 3^2

    1 / 4 * 9

    9/4

Answer 2

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