nanakwameyeb
01.09.2019 •
Mathematics
Consider the functions f(x)=3x^2 and g(x)=-2x - 5 what is the value of f[g(-4)]
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Ответ:
g(-4)=-2(-4)-5
g(-4)=8-5
g(-4)=3
f(g(-4))=f(3)=3(3^2)=3(9)=27
f(g(-4))=27
Ответ:
126 square inches of wrapping paper
Step-by-step explanation:
To compute for the minimum amount of wrapping paper Dylan will need to completely cover the box, you have to compute the surface area of the box. The formula in getting the surface area of a rectangle is:
A = 2WL + 2LH + 2HW
Substituting the given measurements to the formula:
A = 2(5)(6) + 2(6)(3) + 2(3)(5)
A = 60 + 36 + 30
A = 126 square inches
Therefore, Dylan needs to purchase at least 126 square inches of wrapping paper to completely cover the box.