Question

Кто решит 4,5 дам 25 баллов❤️❤️

Answer 1

N 4
Пишу сразу по действиям:
1) 5/7 * ( -1,4) = 5/7 * (-1 4/10) =5/7* (-1 2/5) = 5/7 * (-7/5) = - 1
2) 5 1/5 + (-1) =26/5 + (- 5/5) =21/5
3)-5,25 : 21/5 = -5 25/100 : 21/5 =
-5 1/4 : 21/5 = - 21/4 * 5/21 = - 5/4
4) -5/4 - 3 19/20 = - 25/20 - 3 19/20 = - 3 44/20 = -3 22/10 = -5 2/10 = -5 1/5.

N 5
|z| - 3,401 = -4,9 + 2,15
|z| - 3,401 = - 2,75
|z| = -2,75 + 3,401
|z| = 0,651
z = 0,651
z = - 0,651