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3 years ago

Extra points!!no links tho

Mathematics

1 answer:

Naddik [55]3 years ago

5 0

Answer:

<h3> a. the vertex represents a minimum point</h3><h3> b. f(x) = (x + 5)² - 5</h3>

Step-by-step explanation:

a = 1 > 0 ← that means the parabola opens up, so the vertex is minimum of the function

$f(x)=x^2+10x+20\\\\f(x)=\underline{x^2+10x+25} - 25+20\\\\f(x)=(x+5)^2-5$

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Answer:

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You ar geven the interval $-4\le x\le 3.$ So, the maximum value of the function is at the point x=-4 and the minimum value of the function is at the point x=3.

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So, breadth of canvas = 9 inches .

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$\text{So, remaining length left for painting after painting the border} = 9-1-1=9-2=7\text{ inches}$

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Hence, remaining area = 70 square inches .

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3 years ago