Valoarea expresiei 6x(a+b)=1 a=5/4 b=2/4
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Find the area of the surface obtained by rotating the curve z=4e^2y from y = 0 to y =1 about the y-axis. the area is square units

Amanufacturer knows that their items have a normally distributed lifespan, with a mean if 9.1 years, and standard deviation of 2.9 years. if you randomly purchase one item, what is the probability it will last longer than 10 years?

Order 1100000, 314000, 965000, 1890000, from least to greatest.