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Engineering
21.02.2021 20:13
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Pipes are okay to put okay to put on the end of socket wrenches?

Pipes are okay to put
okay to put on the end of socket wrenches?
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kell22wolf
kell22wolf
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idek
merunikitty1226
merunikitty1226
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\triangle BCA\ \text{and}\ \triangle DCB\ \text{are similar (AAA). Therefore the sides are in proportion:}\\\\\dfrac{BC}{CD}=\dfrac{AC}{BC}\\\\\text{We have}\\\\BC=m\\CD=7\\AC=7+11=18\\\\\text{Substitute:}\\\\\dfrac{m}{7}=\dfrac{18}{m}\qquad\text{cross multiply}\\\\m^2=(7)(18)\\\\m^2=126\to\boxed{m=\sqrt{126}}\to\boxed{A.}


What is the value of m in the figure below in this diagram abd bcd

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