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3 years ago

7

Sam needs to cut a piece of sheet metal into 8 pieces. It takes him 5 minutes to make each cut.

2 answers:

galina1969 [7]3 years ago

7 0

-- Cut the sheet in half.

-- Put one half-sheet on top of the other half-sheet.
Cut the stack of 2 halves in half.

-- Put one stack of two quarter-sheets on top of the other stack of quarter-sheets.
Cut the stack of 4 quarters in half.

Now you have eight one-eighth sheets.

Three cuts.
Taking Sam (3 x 5) = 15 minutes, plus a few seconds for set-up between cuts.

balandron [24]3 years ago

5 0

For #3, To make 8 pieces you have 7 cuts. 7*5=35 minutes

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ddd [48]

Given:

The equation is

$\left(z+\dfrac{6}{7}\right)+\dfrac{2}{14}=-1$

To find:

The solution of the given equation.

Solution:

We have,

$\left(z+\dfrac{6}{7}\right)+\dfrac{2}{14}=-1$

It can be written as

$\left(z+\dfrac{6}{7}\right)+\dfrac{1}{7}=-1$

$\left(z+\dfrac{6}{7}\right)=-1-\dfrac{1}{7}$

Multiply both sides by 7.

$7z+6=-7-1$

$7z+6=-8$

$7z=-8-6$

$7z=-14$

Divide both sides by 7.

$z=\dfrac{-14}{7}$

$z=-2$

Therefore, the value of z is -2.

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