Question

find
(I) -6/5 *(-2)
(ii) - 3/5 * 7
(iii) - 3/4 * 1/7
(if) 2/3 * - 5/9​

Answer 1

Step-by-step explanation:

$(i) \frac{ - 6}{5} \times - 2 \\ \frac{12}{5} = 2.4$

$(ii) \frac{ - 3}{5} \times 7 \\ \frac{ - 21}{5} = 4.2$

$(iii) \frac{ - 3}{4} \times \frac{1}{7} \\ \frac{ - 3}{28} = 0.107$

$(iv)\frac{2}{3} \times \frac{ - 5}{9} \\ \frac{ - 10}{27} = 0.37$

i hope it will help you..

Answer 2

In insects like cockroaches, grasshopper, transportation of gas or gaseous exchange take place by a special type of fine tubes is called tracheae. A majority of aquatic animals like fish and prawns breathe through special organs called gills. ... Gills contain blood vessels which help in exchange of gases.