What is the solution to the system of equations graphed below?

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Ответ:

marialegarda4211

10.03.2020

Mathematics

63.3 square feet

Step-by-step explanation:

Let a = 20 ft, B = 15 ft, c = 9ft

$s=\frac{a+b+c}{2}$

$s=\frac{20+15+9}{2}$

$s=\frac{44}{2}$

$s=22\: ft$

$Area \: of \:\triangle = \sqrt{s(s - a)(s - b)(s - c)} \\ \\ = \sqrt{22(22 - 20)(22 - 15)(22 - 9)} \\ \\= \sqrt{22 \times 2 \times 7 \times 13} \\ \\= \sqrt{44 \times 91} \\ \\ = \sqrt{4,004} \\ \\ = 63.2771681 \\ \\ \approx 63.3 \: {ft}^{2}$

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