Question

8.6 помогите пожалуйста!!дам 25 баллов

Answer 1

1)

$a = 4.7±0.2$

$a_1 = 4.7 + 0.2 = 4.9$

$a_2 = 4.7 - 0.2 = 4.5$

$a = 4.9$ и $4.5$

2)

$a = 43.74±0.05$

$a_1 = 43.74 + 0.05 = 43.79$

$a_2 = 43.74 - 0.05 = 43.69$

$a = 43.79$ и $43.69$

3)

$a = - 2 \frac{3}{4} ± \frac{3}{5}$

$a_1 = - 2 \frac{3}{4} + \frac{3}{5} = - 2.75 + 0.6 = - 2.15$

$a_2 = - 2 \frac{3}{4} - \frac{3}{5} = - 2.75 - 0.6 = - 3.35$

$a = - 2.15$ и $- 3.35$

4)

$a = - 3 \frac{3}{5} ± \frac{1}{10}$

$a_1 = - 3 \frac{3}{5} + \frac{1}{10} = - 3.6 + 0.1 = - 3.5$

$a_2 = - 3 \frac{3}{5} - \frac{1}{10} = - 3.6 - 0.1 = - 3.7$

$a = - 3.5$ и $- 3.7$

5)

$a = 7.90±0.12$

$a_1 = 7.90 + 0.12 = 8.02$

$a_2 = 7.90 - 0.12 = 7.78$

$a = 8.02$ и $7.78$

6)

$a = - 3.45±0.15$

$a_1 = - 3.45 + 0.15 = - 3.30 = - 3.3$

$a_2 = - 3.45 - 0.15 = - 3.60 = - 3.6$

$a = - 3.3$ и $- 3.6$

7)

$a = - 47±2$

$a_1 = - 47 + 2 = - 45$

$a_2 = - 47 - 2 = - 49$

$a = - 45$ и $- 49$

8)

$a = 0.97±0.01$

$a_1 = 0.97 + 0.01 = 0.98$

$a_2 = 0.97 - 0.01 = 0.96$

$a = 0.98$ и $0.96$