If the system of linear equations x + 5y - 11 = 0 and ax + (4a + 36 )y - 33 = 0 has infinitely - many solutions, then :
(a) a + 36 = 0
(b) 3a - b = 0
(c) 3a + b = 0
(d) a = 3b
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Step-by-step explanation:
The thinnest of all the layers.
About 35 km on the continental masses and only 5 km on the ocean floors.
The main minerals constituting the continental mass are:
Silica
Alumina
The continental mass is also called sial. The name sial is derived from letters si of silicon and al of alumina.
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