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Diameter of a wheel 80cm. If the wheel rotates through an angle of 200degrees, how many cm does it move? Show steps please!? Does NASA still use miles instead of kilometers? Questions for medicine I could not get it and I need your help? 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? Find all of the actual roots of the polynomial: x^3 - 2x^2 + 5x + 26 = 0?