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Mashutka [201]
3 years ago
8

What is 3 3/4 cm times 2 1/2 cm= ---------- please help!

Mathematics
1 answer:
jek_recluse [69]3 years ago
7 0

Answer:

3 3/4 cm × 2 1/2 = 5 7/12cm i think

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Two sides of a triangle are two consecutive number, whose area is 17.5cm². Find the numbers
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Answer:

The numbers associated with the triangle are 5.437 and 6.437 centimeters, respectively.

Step-by-step explanation:

Two numbers are consecutives, when their difference is equal to 1. The area of the triangle is determined by the following formula:

A = \frac{1}{2}\cdot n \cdot (n+1)

A = \frac{1}{2}\cdot (n^{2}+n)

A = \frac{n^{2}}{2}+\frac{n}{2}

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Where n is the shortest length of the triangle, measured in centimeters.

And we get the following second-order polynomial:

n^{2}+n -2\cdot A = 0 (1)

If we know that A = 17.5\,cm^{2}, then the shortest length of the triangle is:

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Since length is a positive variable, the only possible solution is:

n\approx  5.437\,cm

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Step-by-step explanation:

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▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

Thickness of the book is ~

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Refer to the attachment for solution ~

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