Mathematics: A machinist must cut 17 strips of metal that are each 2 ft 6 2/8 in long. What is the total length of metal needed in inches? Write as a proper or mixed fraction.

A machinist must cut 17 strips of metal that are

brittnum225

06.12.2021

Step-by-step explanation:

2/8 inch = ¼ inch

1 ft = 12 inch

17(2(12) + 6¼) = 514¼ inches

provided a shear with zero kerf is used.

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tdahna0403

20.07.2022

ANSWER

$f(x) = - {x}^{2}$

EXPLANATION

A quadratic function written in the form:

$f(x) = a {(x - h)}^{2} + k$

has it's vertex at V(h,k).

For instance, the function

$f(x) = {(x + 4)}^{2}$

has its vertex at (-4,0).

Therefore a function that has it's vertex at the origin (0,0), will have equation of the form,

$f(x) = a {x}^{2}$

Among the given options, the only function in this form is

$f(x) = - {x}^{2}$

Hence f(x)=-x² has it's vertex at the origin.

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