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Kisachek [45]
3 years ago
14

The length of a rectangle is represented by (2x2−5x+5)cm and the width is represented by (x2+4x−3)cm. What is the representation

of the perimeter
Mathematics
1 answer:
Katarina [22]3 years ago
7 0

Answer: 6x^2-2x+4

Step-by-step explanation:

Given

The length of a rectangle is given by

l=2x^2-5x+5

and the breadth is given by

w=x^2+4x-3

Perimeter is the sum of the sides of rectangle

\therefore \text{Perimeter P= }2(2x^2-5x+5+x^2+4x-3)\\\Rightarrow P=2(3x^2-5x+4x+5-3)\\\Rightarrow P=2(3x^2-x+2)\\\Rightarrow P=6x^2-2x+4

Thus, the perimeter is given by 6x^2-2x+4.

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At Nathan's birthday there were 16 girls, 10 boys and 9 adults. Find the percentage of: the children that are girls? the childre
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