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Zachgrainger4436

Zachgrainger4436

17.10.2020 •

Mathematics

There are 27 students in a class one third of the students are boys how many students are girls

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Ответ:

rubyhart522

04.02.2022

18 students are girls.

Step-by-step explanation:

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Ответ:

KrishnaBalaram1235

21.09.2020

$\sqrt{246}$

Step-by-step explanation:

The scale factor is $\frac{4\sqrt{138} }{\sqrt{138}}$ = 4

If AB = 6 $\sqrt{3}$ then AC = 24 $\sqrt{3}$ 4 times longer.

Using a² + b² = c² substitute a = 4 $\sqrt{138}$ , b = 24 $\sqrt{3}$ , and c = DC = x

$(4\sqrt{138})^2 + (24\sqrt{3} )^2= x^2$

2208 + 1728 = x²

3936 = x²

$\sqrt{3936} = x$

4 $\sqrt{246$ this is the length of DC

Now the length of EC is 4 times shorter, so EC = $\sqrt{246}$

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