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Mathematics 21 Online
bill533:

https://static.k12.com/nextgen_media/assets/8117851-NG_GMT_DP024_42_001.png △DNS∼△ARH . What is the value of x? Enter your answer in the box. _______ units

bill533:

i believe it's 33

bill533:

@MARC

MARC:

\(\frac{72}{21.6}=\frac{110}{x}\) \(\frac{10}{3}=\frac{110}{x}\) \(x=\frac{110}{\frac{10}{3}}\) \(x=33\)

MARC:

yep,that's correct :)

bill533:

https://static.k12.com/nextgen_media/assets/8117853-NG_GMT_DP024_42_005.png The two triangles are similar. What is the value of x? Enter your answer in the box. x = _______ this one is 7 ?

MARC:

\(\frac{8+6}{8}=\frac{3x}{2x-2}\)

MARC:

\(\frac{14}{8}=\frac{3x}{2x-2}\)

MARC:

\(14(2x-2)=3x(8)\) \(28x-28=24x\) \(4x=28\) \(x=7\)

MARC:

That's right

bill533:

https://static.k12.com/nextgen_media/assets/8117856-NG_GMT_DP024_42_006.png What is the value of x? Enter your answer in the box. _____ units

bill533:

it's 28 ?

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