- Name three types of white blood cells, and explain their roles in the immune system.?

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Problem involving math induction! If m and n are distinct real numbers, prove that (m+2)^2 = (n+2)^2 if and only if x+y=-4? 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? Can reality itself be programmed by interacting with it - in particular asking questions that lead to where you're directing it to go? 0.8 litres water is how many cups? Describe how and where new crust material is made. Describe how and where old crust is destroyed.?