chriscook4471
08.03.2020 •
Mathematics
91
PROBLEMS
3.1 A body of dimensions 1.5 m 1 m * 2 m, weighs 1962 N in water. Find its
weight in air. What will be its specific gravity?
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Ответ:
(2, 1)
Step-by-step explanation:
x - 2y = 4
4x + 2y = 6
Add both together
5x = 10
Divide both sides by 5
x = 2
Substitute
2 - 2y = 4
Subtract 2
-2y = -2
Divide by -2
y = 1