How do I do Radicals?

Mathematics

2 answers:

laiz [17]2 years ago

6 0

Answer:

<h2>See below</h2>

Step-by-step explanation:

To simplify radicals that are not perfect squares, we need a new method.

Example: $\sqrt{27}$

27 is not a perfect square square the square root cannot be used.

$\sqrt{27} = 5.19615242271$

To solve this, we need to break down the radical into simpler parts.

$\sqrt{27} = \sqrt{3} * \sqrt{9}$

$\sqrt{9} = 3$

$\sqrt{3}$ cannot be simplified

$\sqrt{27}$ = 3 $\sqrt{3}$

Good luck on your test!

I'm always happy to help :)

Blizzard [7]2 years ago

3 0

Answer:

For online calculators you can type sqrt() or just sqrt and it will do it for you

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Marta_Voda [28]

Answer:

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Step-by-step explanation:

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2 years ago

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ABCD is a rectangle. The length of BD is 8 units, and m angle ABD is 67°. The length of AC is units, and m angle CDB is °.

Marina86 [1]

See the attached picture to better understand the problem
we know that
in rectangle ABCD
AB=CD
and
AD=BC
therefore
the triangle ACD and triangle ABC are congruent
so
BD=AC
BD=8 units

the answer part a) is
BD= 8 units

Part b) Find angle CBD

we know that
∠ABD+∠CBD=90°---------> by complementary angles
so
∠CBD=90-∠ABD-----> 90-67----> 23°
∠CBD=23°

the answer Part b) is
∠CBD=23 degrees