Question

Va dau 35 de puncte si coroana va rog rapid

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

8.
x^2 = 36 => x = 6
x^2 = 81 => x = 9
x^2 = 100 => x = 10
9.
21x = 14 • 0,54 => x = (14•0,54)/21 = 0,36
1,5x = 35 • 0,42 => x = (35•0,42)/1,5 = 9,8
10.
12/100 • 50 = 12/2 = 6
75/100 • 312 = 3/4 • 312 = 3 • 78 = 234
35/100 • 60 = 7/20 • 60 = 21
25/100 • 504 = 1/4 • 504 = 126
36/100 • 225 = 9/25 • 225 = 81
11.
P/100 • 65 = 13
65P = 1300 => P = 20%

P/100 • 140 = 21
140P = 2100 => P = 15%

P/100 • 96 = 24
96P = 2400 => P = 25%

P/100 • 300 = 12
3P = 12 => P = 4%

P/100 • 72 = 9
72P = 900 => P = 12,5%

P/100 • 800 = 52
8P = 52 => P = 6,5%