Mathematics: Question 8 I always make the same mistake It’s urgent

Question 8 I always make the same mistake It’s

izquierdohannah

29.01.2022

$AB=4\sqrt{5}$ (Which is the same as $\sqrt{80}$ )

Step-by-step explanation:

In order to find the length of AB, we first need to know the length of AC.

The length of the sides for ACD are

$a=2\\b=?\\c=10$

Knowing these values, we can plug them into the pythagorean theorem and solve for the missing side, b

$a^2+b^2=c^2\\\\b^2=c^2-a^2\\\\b=\sqrt{c^2-a^2} \\\\b=\sqrt{(10)^2-(2)^2} \\\\b=\sqrt{100-4}\\ \\b=\sqrt{96}$

This means that $AC=\sqrt{96}$

Now, let us find the values of a,b and c for our second triangle

$a=4\\b=x\\c=\sqrt{96}$

And now time for the pythagorean theorem

$b=\sqrt{c^2-a^2} \\\\b=\sqrt{(\sqrt{96})^2-(4)^2 } \\\\b=\sqrt{96-16}\\\\b=\sqrt{80} \\\\b=4\sqrt{5}$

This means that $AB=4\sqrt{5}$ (Which is the same as $\sqrt{80}$ )

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jaquiel9358

06.10.2020

0.75mb -> 0.75 megabits

Step-by-step explanation:

You have 4,500 kB which is equivalent to 4.5 mb(megabits).

You have the value of 6 minutes to use as a dividend (Divider).

4,500 kB divided by 6 gets you 750kB -> this is not in hundredths as of itself is a whole number

4.50 mb divided by 6 gets you 0.75 mb -> This is in hundredths

Therefore inorder to get the answer to the hundredths, you would need to convert the units to megabits instead of kilobytes.

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