A 14 foot ladder is set up 4 feet from the base of a building. How far up the building does the ladder reach? Round your answer to the nearest tenth of a foot A. 16.5 feet
B. 18.0 feet
C. 14.6 feet
D. 13.4 feet

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Ответ:

thefandomarmy24

30.09.2020

Mathematics

x = -2+2i ,x = -2-2i

Step-by-step explanation:

given,

equation 25x²+100x+200=0

dividing the equation by 25 on both side

x²+4x+8=0

using

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

$x = \dfrac{-4\pm \sqrt{4^2-4\times 1\times 8}}{2}$

$x = \dfrac{-4+ \sqrt{4^2-4\times 1\times 8}}{2},x = \dfrac{-4-\sqrt{4^2-4\times 1\times 8}}{2}$

$x = \dfrac{-4+ \sqrt{-16}}{2},x = \dfrac{-4-\sqrt{-16}}{2}$

$x = \dfrac{-4+ 4i}{2},x = \dfrac{-4-4i}{2}$

x = -2+2i ,x = -2-2i

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A 14 foot ladder is set up 4 feet from the base of a building. How far up the building does the ladder reach? Round your answer to the nearest tenth of a foot A. 16.5 feet B. 18.0 feet C. 14.6 feet D. 13.4 feet