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4 years ago

6

Simplify this expression 19-(-8)-(-14)=

1 answer:

bixtya [17]4 years ago

7 0

19-(-8)-(-14)= which is 41

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4 years ago

What is the temperature in degrees Celsius that is equivalent to a temperature of 40 F?

Ludmilka [50]

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4 years ago

A farmer is tracking the amount of corn his land is yielding each year. He finds that the function f(x) = −x2 + 20x + 50 models

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Answer:

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Step-by-step explanation:

The function that models the crops in pounds per acre over x years is

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In year 1, the crop yield is $f(1)=-(1)^2+20(1)+50=69$

In year 10, the crop yield is $f(10)=-(10)^2+20(10)+50=150$

The average rate of change from year 1 to year 10 is given by:

$\frac{f(10)-f(1)}{10-1}$

We substitute the values to get:

$\frac{150-69}{10-1}$

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Since the average rate of change is positive, the crop yield decreased by 0.09 pounds per acre from year 1 to year 10.

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Answer:

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Step-by-step explanation:

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