Graph the equation. y = − 4 ( x + 2 ) 2 − 1 y=−4(x+2) 2 −1

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Ответ:

CoolRahim9090

08.01.2021

Mathematics

The total length of the two cables is $2\sqrt{145}\ units$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

In the right triangle ABD

Applying the Pythagoras Theorem

$AB^{2}=BD^{2}+AD^{2}$

substitute the given values

$AB^{2}=9^{2}+8^{2}$

$AB^{2}=145$

$AB=\sqrt{145}\ units$

Remember that

AB=AC ----> because ABC is an isosceles triangle

The total length of the two cables is equal to

$AB+AC=2AB=2\sqrt{145}\ units$

For a crane to lift the beam shown to the right, the beam and the two support cables must form an is

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