Mathematics: Solve x² + 3x = 3 between 0 and 1 to 2 significant figures

Solve x² + 3x = 3 between 0 and 1 to 2 significant

Ответ:

lilpeepxliltracy

02.12.2021

Mathematics

$x_1\approx0.79,x_2\approx-3.79$

Step-by-step explanation:

x^2+3x=3

x^2+3x-3=0

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\frac{-3\pm\sqrt{(-3)^2-4(1)(-3)}}{2(1)}$

$x=\frac{-3\pm\sqrt{9+12}}{2}$

$x=\frac{-3\pm\sqrt{21}}{2}$

$x_1\approx0.79,x_2\approx-3.79$

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Ответ:

jordynnmarelich9519

31.05.2021

Mathematics

134.4 centimeters

Step-by-step explanation:

This question is asking us for a missing leg on the triangle, lets call it x. Using the Pythagorean theorem (a²+b²=c²), we can figure out what value is missing (either a or b, they are interchangeable).

replace the values in the equation.

83²+x²=158²

get rid of the exponents.

6,889+ x² = 24,964.

subtract 6,889 from 24,964.

x²=18,075.

find the square root on both sides of the equation.

x=134.4432966.

I am assuming you want this rounded to the nearest tenth.

134.4 is your answer.

Solve x² + 3x = 3 between 0 and 1 to 2 significant figures

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