#### Answer

a) $-\frac{36}{55}$
b) $-\frac{44}{45}$

#### Work Step by Step

a)
$xy=-\frac{4}{5}\times\frac{9}{11}=-\frac{36}{55}$
b)
$x\div y=-\frac{4}{5}\div \frac{9}{11}=-\frac{4}{5}\times\frac{11}{9}=-\frac{44}{45}$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

a) $-\frac{36}{55}$
b) $-\frac{44}{45}$

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