Question

626.1)(-3/7×1/4)×(-4) 2)(-4 1/5×1,3)×10/13

Answer 1

Ответ:

(- 3/7 * 1/4) * (- 4) = (- 3/28) * (- 4) = 3/7

2(4,1/5 * 1,3) * 10/13 = 2 * (0,82 * 1,3) * 10/13 = 2 * 1,066 * 10/13 = 2,132 * 10/13 = 21,32/13 = 1,64

Пошаговое объяснение:

Answer 2

Let's break down and solve these two expressions step by step:

1. $626.1 \times \left(-\frac{3}{7} \times \frac{1}{4}\right) \times (-4)$

First, let's simplify the expression inside the parentheses:

$-\frac{3}{7} \times \frac{1}{4} = -\frac{3}{28}$

Now, we can rewrite the expression:

$626.1 \times \left(-\frac{3}{28}\right) \times (-4)$

Now, multiply the numbers together:

$626.1 \times \left(-\frac{3}{28}\right) = -\frac{626.1 \times 3}{28} = -\frac{1878.3}{28}$

Now, simplify further:

$-\frac{1878.3}{28} = -67.0821428571$ (rounded to 10 decimal places)

Finally, multiply by -4:

$-67.0821428571 \times (-4) = 268.3285714284$ (rounded to 10 decimal places)

So, the result of the first expression is approximately $268.3285714284$.

2. $-\frac{4}{5} \times 1.3 \times \frac{10}{13}$

Let's multiply the fractions first:

$-\frac{4}{5} \times \frac{10}{13} = -\frac{40}{65}$

Now, simplify the fraction:

$-\frac{40}{65} = -\frac{8}{13}$

Now, multiply by 1.3:

$-\frac{8}{13} \times 1.3 = -\frac{10.4}{13}$

Now, simplify the decimal fraction:

$-\frac{10.4}{13} = -0.8$

So, the result of the second expression is $-0.8$.