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solmaris [256]
3 years ago
15

What do you need to do to add and subtract decimals?

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
6 0

Answer:

Write down the numbers, one under the other, with the decimal points lined up

Put in zeros so the numbers have the same length

Then add using column addition, remembering to put the decimal point in the answer

Step-by-step explanation:

Elza [17]3 years ago
6 0
Line up decimals and add/subtract no different then when you’re adding and subtracting normal numbers
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Answer:

The exponential model is y = 0.07\cdot e^{0.73\cdot x}.

Step-by-step explanation:

The exponential model can be modelled by the following mathematical expression:

y = A\cdot e^{B\cdot x} (1)

Where:

x - Independent variable.

y - Dependent variable.

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If we know that (x_{1}, y_{1}) = (7,12) and (x_{2}, y_{2}) = (8,25), then we get the following system of equations:

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If we divide (3) by (2), we calculate the value of B:

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A = 12\cdot e^{-7\cdot B}

A = 0.0704

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