Question

954. Найдите значения выражений: 18 1) 231.а - 2,75 : ь при а = 12,4; b = 47; 8 2) 1 x + y: 19,5 пи x = 3,6; y = 2; 13 3) c:d: 0,96 - 0,35 при с = 15; d = 1 - d-1- 33' 17 4) 222 2: t - 3,99 пpи z = 230; t = 1,3125.​

Answer 1

Ответ:

1) 231.а - 2,75 : b при а = 12,4; b = 47;

Substitute a = 12.4 and b = 47 into the expression:

231(12.4) - 2.75 : 47

= 2864.4 - 0.0585

= 2864.3415

Answer: 2864.3415

2) 1 x + y: 19.5 при x = 3.6; y = 2;

Substitute x = 3.6 and y = 2 into the expression:

1(3.6) + 2 : 19.5

= 3.6 + 0.1026

= 3.7026

Answer: 3.7026

3) c:d: 0.96 - 0.35 при с = 15; d = 1 - d-1- 33' 17

Substitute c = 15 and d = 1 - 33'17 into the expression:

15 : (1 - 33'17) : (0.96 - 0.35)

= 15 : (-32'17) : 0.61

= -0.465

Answer: -0.465

4) 222 2: t - 3.99 при z = 230; t = 1.3125.

Substitute z = 230 and t = 1.3125 into the expression:

222(2) : 1.3125 - 3.99

= 444 : -2.6775

= -165.8

Answer: -165.8