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ruslelena [56]
3 years ago
13

The length of a rectangle is 3 cm more than twice the width. The area of the rectangle is 65 square centimeters. Find the dimens

ions of the rectangle.
Mathematics
1 answer:
polet [3.4K]3 years ago
6 0

Answer:

5 cm and 13 cm

Step-by-step explanation:

Let b be the width of the rectangle.

Length = 3+2b

The area of the rectangle is 65 cm²

We need to find the dimensions of the rectangle. The area of a rectangle is given by :

A = lb

65=(3+2b)b\\\\65=3b+2b^2\\\\3b+2b^2-65=0\\\\b=5\ cm,-6.5\ cm

Neglecting the negative value, the width of the rectangle is 5 cm.

Length = 3+2b

=3+2(5)

=3+10

=13 cm

Hence, the dimensions of the rectangle are 5 cm and 13 cm.

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Using it's concepts, we have that:

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<h3>What is the absolute change of two values?</h3>

The absolute change between two values is given by the absolute value of the difference between two values.

In this problem, the values are of $40,156 million, which is the final value, and $25,003 million, which is the initial value, hence the absolute change is:

A = 40,156 - 25,003 = $15,153 million.

<h3>What is the relative change?</h3>

The relative change is the absolute change multiplied by 100% and divided by the initial value, hence:

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More can be learned about absolute and relative changes at brainly.com/question/19162774

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