Предмет: Математика, автор: lunevy1212

Масса первых трёх искусственных спутника Земли, запущенных в 1957-1958гг.,была равна 1918.9кг.Найдите массу каждого из этих спутников,если масса второго была больше массы первого на 424.7кг,а масса третьего больше массы второго на 818.7

Ответы

Автор ответа: грызучка

1 спутник - х

2 спутник - 424,7 + х

3 спутник - 818,7 + 424,7 + х

Всего - 1918,9 кг.

Решение:

х + 424,7 + х + 818,7 + 424,7 + х = 1918,9

3х = 1918,9 - 424,7 - 818,7 - 424,7

3х = 250,8

х = 250,8 : 3

х = 83,6 кг. масса 1 спут.

424,7 + 83,6 = 508,3 кг. сумма 2 спут.

508,3 + 818,7 = 1327 кг. сумма 3 спут.

Ответ: 83, 6 кг.; 508,3 кг. ; 1327 кг

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