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Anna35 [415]
3 years ago
14

You are a sales specialist at a company that makes copper wire. You use the formula (cost in dollars)= 0.09× (length in feet) to

calculate the cost of #8 copper wire. Your sales manager would like to have the formula in terms of length in meters for the international division. Which of the following formulas is correct?
SAT
2 answers:
liubo4ka [24]3 years ago
4 0

rduxgfcjyrsuyxcfhgkftdryf

Trava [24]3 years ago
4 0

Answer:

0.2196

Explanation:

1foot = 0.305meters

(Cost in dollars) = 0.09× 0.305 × length in meters

For a 8 m copper wire

Cost in dollars= 0.09×0.305×8

Cost in dollars=0.2196

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Nuetrik [128]

The concentration of Iron in the galvanic (voltaic) cell Fe(s) + Mn²⁺(aq) ⟶ Fe²⁺(aq) + Mn(s) is 0.02297 M.

<h3>What is the Nernst Equation?</h3>

The Nernst equation enables us to identify the cell potential(voltage) in presence of non-standard conditions in a galvanic cell. It can be expressed by using the formula:

\mathbf{E_{cell} = E_o - \dfrac{0.059}{n} \times log \dfrac{[Fe^+]}{[Mn^{2+}]}}

where;

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Replacing the values into the above equation, we have:

\mathbf{0.78 = 0.77 - \dfrac{0.059}{2} \times log \dfrac{[Fe^{2+}]}{[0.050]}}

\mathbf{0.78 -0.77= -0.0296\times log \dfrac{[Fe^{2+}]}{[0.050]}}

\mathbf{log^{-1} (-0.3378) = \dfrac{[Fe^{2+}]}{[0.050]}}

\mathbf{Fe^{2+} = (0.4594\times 0.050 )\ M}

\mathbf{Fe^{2+} =0.02297 \ M }

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AfilCa [17]

The true statement about the graph of f(x) is f(x) = \frac 35x + 3

The graph of f(x) is a straight line that passes through the points (-5,0) and (0,3).

Start by calculating the slope (m)

m = \frac{y_2 - y_1}{x_2 -x_1}

So, we have:

m = \frac{3-0}{0--5}

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m = \frac{3}{5}

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This gives

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Open bracket

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Express y as a function of x

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Hence, the true statement about the graph of f(x) is f(x) = \frac 35x + 3

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