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olchik [2.2K]
3 years ago
14

Help me pleaseeeeeeeeeeeeee

Mathematics
2 answers:
adelina 88 [10]3 years ago
5 0

Answer:

\frac{2}{27}

Step-by-step explanation:

1) Use this rule: \frac{a}{b} *\frac{c}{d} =\frac{ac}{bd }

\frac{2*1}{9*3}

2) Simplfiy 2 · 1 to 2.

\frac{2}{9*3}

3) Simplify 9 · 3 to 27.

\frac{2}{27}

larisa [96]3 years ago
3 0

Answer:

the least common denominator is. 9

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If you run for 0.4 hours at 7 mph, how fast should you walk during the next 0.8 hours to have the average speed of 5 mph?
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Answer:

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Step-by-step explanation:

The average speed of an object is given by the total distance covered by the time taken:

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v_2=\frac{d_2}{t_2}=\frac{3.2}{0.8}=4 mph

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