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katovenus [111]
2 years ago
8

Muriel told shana that one of the products in the table was incorrect. Which value in the table is incorrect? what is the value

shana should have written?.
SAT
1 answer:
IRISSAK [1]2 years ago
8 0

The product of expressions or numbers is calculated by multiplying the expressions or numbers.

  • The incorrect value in the table is -2y
  • The value that should have been written is -2xy

From the table (see attachment), the incorrect product is given as:

-y \times 2x = -2y

The above product is incorrect.

This is so because when -y is multiplied by 2x, the result is -2xy

So, the correct expression is:

-y \times 2x = -2xy

Read more about products at:

brainly.com/question/4344214

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Newton’s law of cooling states that for a cooling substance with initial temperature t0, the temperature t(t) after t minutes ca
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The cooling rate of the substance is approximately 0.0732.

According to the statement, the Newton's law of cooling is defined by the following formula:

T(t) = T_{s} + (T_{o}-T_{s})\cdot e^{-k\cdot t} (1)

Where:

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Please notice that substance reaches thermal equilibrium when T(t) = T_{s}, that is when temperature of the substance is equal to the temperature of surrounding air.

If we know that T_{o} = 80\,^{\circ}C, t = 15\,min, T_{s} = 50\,^{\circ}C and T(15) = 60\,^{\circ}C, then the cooling rate of the substance is:

60 = 50 + (80 - 50)\cdot e^{-15\cdot k}

\frac{60-50}{80-50}= e^{-15\cdot k}

\frac{1}{3} = e^{-15\cdot k}

k = -\frac{1}{15}\cdot \ln \frac{1}{3}

k \approx 0.0732

The cooling rate of the substance is approximately 0.0732.

To learn more on Newton's law of cooling, we kindly invite to check this verified question: brainly.com/question/13748261

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