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Ilya [14]
3 years ago
14

Help please asap!!! Thx

Mathematics
1 answer:
Lostsunrise [7]3 years ago
8 0

Answer:

Step-by-step explanation:

<u><em># 21.</em></u>

\frac{8}{15} ÷ ( - 0.35 ) = - \frac{8}{15} ÷ \frac{35}{100} = - \frac{8}{15} ÷ \frac{7}{20} = - \frac{8}{15} × \frac{20}{7} = - \frac{32}{21} <em>(B).</em>

<u><em># 22.</em></u>

( 3\frac{1}{2} - 9\frac{3}{4} ) ÷ ( - 2.5 )

3\frac{1}{2} = 3\frac{5}{10} = 3.5

9\frac{3}{4} = 9\frac{3*25}{4*25} = 9\frac{75}{100} = 9.75

( 3.5 - 9.75 ) ÷ ( - 2.5 ) = ( - 6.25 ) ÷ ( - 2.5 ) = 2.5 <em>(D).</em>

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