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dybincka [34]
4 years ago
14

The function f is defined by f(x) = 2x²-1. Find f (2x).

Mathematics
1 answer:
umka21 [38]4 years ago
5 0

Answer: f(2x)=8x^2-1

Step-by-step explanation:

All that is required here is to substitute x = 2x into the right side in the same way that is done for a numeric value.

f(2x) = 2(2x)^2-1\\f(2x) = 2(4)x^2-1\\f(2x) = 8x^2-1\\

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Answer:

A cross-section parallel to the base is a rectangle measuring 15 inches by 8 inches.

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A cross-section not parallel to the base that passes through opposite 6-inch edges is a rectangle measuring 6 inches by greater than 15 inches.

Step-by-step explanation:

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3 years ago
The score on a trivia game is obtained by subtracting the number of incorrect answer from twice the number of correct answer. If
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Step-by-step explanation:

First we have to develop the information that gives us as 2 equations

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x = 50 - y

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⭕-------------------------------------⭕


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A

Step-by-step explanation:

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