6.183 Найдите значение выражения: a) 42,7a при a = 6; 38; 100; б) 1000m + n при m = 4,5127 и n = 8,2; в) 16y + 8z при y = 1,7 и z = 4,3; г) 6,3c + 2,5c - 5,4c при c = 5; 15; 30; 150; д) 9,5x + 4,8x + 5,7x при x = 1,0023; 6,2345; e) 11,6z + 12,9z - 4,5z при z = 2,0207; 5,3467.

Решение: а) 42,7a при a = 6; 38; 100: * `42.7 * 6 = 256.2` * `42.7 * 38 = 1622.6` * `42.7 * 100 = 4270` б) 1000m + n при m = 4,5127 и n = 8,2: * `1000 * 4.5127 + 8.2 = 4512.7 + 8.2 = 4520.9` в) 16y + 8z при y = 1,7 и z = 4,3: * `16 * 1.7 + 8 * 4.3 = 27.2 + 34.4 = 61.6` г) 6,3c + 2,5c - 5,4c при c = 5; 15; 30; 150: * `6.3 * 5 + 2.5 * 5 - 5.4 * 5 = 31.5 + 12.5 - 27 = 17` * `6.3 * 15 + 2.5 * 15 - 5.4 * 15 = 94.5 + 37.5 - 81 = 51` * `6.3 * 30 + 2.5 * 30 - 5.4 * 30 = 189 + 75 - 162 = 102` * `6.3 * 150 + 2.5 * 150 - 5.4 * 150 = 945 + 375 - 810 = 510` д) 9,5x + 4,8x + 5,7x при x = 1,0023; 6,2345: * `9.5 * 1.0023 + 4.8 * 1.0023 + 5.7 * 1.0023 = 9.52185 + 4.81104 + 5.71311 = 20.046` * `9.5 * 6.2345 + 4.8 * 6.2345 + 5.7 * 6.2345 = 59.22775 + 29.9256 + 35.53665 = 124.689` e) 11,6z + 12,9z - 4,5z при z = 2,0207; 5,3467: * `11.6 * 2.0207 + 12.9 * 2.0207 - 4.5 * 2.0207 = 23.44 + 26.067 - 9.093 = 40.414` * `11.6 * 5.3467 + 12.9 * 5.3467 - 4.5 * 5.3467 = 62.02172 + 68.97243 - 24.06015 = 106.934`