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denis23 [38]
3 years ago
5

Evaluate -3x 3 - 4x for x = -1.

Mathematics
1 answer:
Ksju [112]3 years ago
7 0
Plug in -1 for x the solve the equation. 3 * -1 -4(-1) which equals 7
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mrs_skeptik [129]
To get the difference between the two diameters, all you have to do is subtract the smaller diameter (Mercury) from the larger diameter (Saturn) as follows:

Difference between the two diameters =diameter of Saturn-diameter of Mercury
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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
polet [3.4K]

Answer:

The crop yield increased by 9 pounds per acre from year 1 to year 10.

Step-by-step explanation:

To solve this we are using the average rate of change formula: Av=\frac{f(x_2)-f(x_1)}{x_2-x_1}, where:

x_2 is the second point in the function

x_1 is the first point in the function

f(x_2) is the function evaluated at the second point

f(x_1) is the function evaluated at the first point

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Av=\frac{-(10)^2+20(10)+50-[-(1)^2+20(1)+50]}{10-1}

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Av=\frac{150-69}{9}

Av=\frac{81}{9}

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Since f(x) represents the number of pounds per acre and x the number of years, we can conclude that the crop yield increased by 9 pounds per acre from year 1 to year 10.

6 0
3 years ago
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Answer:

Step-by-step explanation:

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30% of what equals 60​
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Create an inequality
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2 years ago
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