Question

Зная, что a=2,(6) и b=корень3 округлите а и b до a)десятых b) сотых c) тысячных и найдите приблеженное значение суммы (a+b) и разности (a-b)

Answer 1

Ответ:

а) а=2,7; b=1,7

b) a=2,67; b=1,73

c) a=2,667; b=1,732

(2,667+1,732)=4,399

(2,667-1,732)=0,935

Answer 2

To round the numbers a and b to the specified decimal places, follow these steps:

a) Rounding to tenths: a = 2.6 (rounded to the nearest tenth) b = √3 ≈ 1.7 (rounded to the nearest tenth)

b) Rounding to hundredths: a = 2.60 (rounded to the nearest hundredth) b = √3 ≈ 1.73 (rounded to the nearest hundredth)

c) Rounding to thousandths: a = 2.600 (rounded to the nearest thousandth) b = √3 ≈ 1.732 (rounded to the nearest thousandth)

Now, let's find the approximate value of the sum (a + b) and the difference (a - b):

a + b ≈ 2.6 + 1.7 ≈ 4.3 (rounded to the nearest tenth) a - b ≈ 2.6 - 1.7 ≈ 0.9 (rounded to the nearest tenth)

a + b ≈ 2.60 + 1.73 ≈ 4.33 (rounded to the nearest hundredth) a - b ≈ 2.60 - 1.73 ≈ 0.87 (rounded to the nearest hundredth)

a + b ≈ 2.600 + 1.732 ≈ 4.332 (rounded to the nearest thousandth) a - b ≈ 2.600 - 1.732 ≈ 0.868 (rounded to the nearest thousandth)