Since both rectangles are similar, the following ratio must be fulfilled:
By multiplying both sides by 14, we get
and by subtracting 9 to both sides, we have
Therefore, the answer is 12.
Factor completely. 28 – 7x2
1 answer:
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Answer:
-1
Step-by-step explanation:
Given,
f(x) = -x² + 4x - 1 and x = 0
Putting the value of x we get,
f(0)= + (4 X 0) - 1
= -0+0-1
=-1
∴f(x)= -1
So, the required value is -1