Krch1401
05.02.2020 •
Mathematics
Constructing a box. from a rectangular piece of cardboard having dimensions 20 inches x 30 inches, an open box is to be made by cutting out identical squares of area x^2 from each corner and turning up the sides.
(a) show that the volume of the box is given by the function v(x)=x(20-2x)(30-2x).
(b) find all positive values of x such that v(x)> 0.
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Ответ:
height=x length=20-2(what u cut out)=20-2x width=30-2(what u cut out)=30-2x so v(x)=l*w*h=x(20-2x)(30-2x) b) (0,10)
Ответ:
boston
Explanation:
because