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9966 [12]
2 years ago
7

If f(x) = 4x²-2 then f(-2) is​

Mathematics
1 answer:
klemol [59]2 years ago
3 0
To find f(-2), substitute (-2) into x of the function f(x) = 4x^2-2
We get, f(-2) = 4(-2)^2 - 2
= (4*4)-2 = 16-2 = 14
Therefore, f(-2)=14.
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3 years ago
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Lena [83]

Answer:

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Step-by-step explanation:

When z "varies jointly" with x and y, it can be described by the formula

   z = kxy

Here, we have bags of mulch (n) varying jointly with area (a) and depth (d), both in feet. The given information can let us find the value of k.

  n = kad

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Now, we can fill in the other values of interest.

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<em>Comment on the problem</em>

This problem requires the formula be written with both area and depth expressed in feet, yet it gives depth in inches. The formula can also be written using depth in inches. In that case, k = 1/36.

8 0
3 years ago
A+x+6, when a=10 and x=4
kolezko [41]

Answer:

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Step-by-step explanation:


4 0
3 years ago
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alexgriva [62]

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3 years ago
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