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The silica content of magma greatly affects its viscosity. Magma with a high silica content has a? Could someone help me with these math problems? I can't figure them out. Solve the linear equation;
x+2y=15
y=-2x+0 9x-12y=-3
-12x+16y=4? Make a conjecture about the next item in the sequence.1, -4, 9, -16,? Find the complement of the angle 3pi/7. Please show steps!? Questions for medicine I could not get it and I need your help?