Question

hey army please help ​

Answer 1

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1a) 3/7 b) -3/5

2) 5/13 × -8/3 = -40/39

3) 1

Answer 2

$I$

1.

$a. \: \frac{3}{7}$

$b. \: - \frac{3}{5}$

2.

$\frac{5}{13} \times \frac{ - 3}{8} = \frac{ - 40}{39}$

3. Let x be a rational number i.e.x∈Q

$x = \frac{1}{x}$

${x}^{2} = 1$

x=±1

The rational numbers equal to their reciprocal are 1 and −1.

$II$

1.

$\frac{3}{8}$