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mr Goodwill [35]
3 years ago
8

Twenty-one is 20% of ________.

Mathematics
1 answer:
Elanso [62]3 years ago
4 0

To find the answer for this, divide 21 by the percentage:


21 / 20% = 21 / 0.20 = 105


21 is 20% of 105

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2 years ago
Is - 29/8 < , > or = - 3.62
andreyandreev [35.5K]
When -29/8 is written as a decimal it becomes
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3 0
3 years ago
What is the length of BD?
I am Lyosha [343]

Answer:

10\sqrt{3}

Step-by-step explanation:

<u>Trigonometric Ratios </u>

This problem will be solved by the use of a trigonometric ratio called sine because it relates the opposite side of a given angle with the hypotenuse of the triangle.

Selecting the angle of 60° in triangle ABD:

<em>Sine Ratio </em>

\displaystyle \sin 60^\circ=\frac{\text{opposite leg}}{\text{hypotenuse}}

\displaystyle \sin 60^\circ=\frac{BD}{20}

Solving for BD:

\displaystyle BD=20\sin 60^\circ

Since

\sin 60^\circ=\frac{\sqrt{3}}{2}

\displaystyle BD=20\frac{\sqrt{3}}{2}

Simplifying:

\boxed{\displaystyle BD=10\sqrt{3}}

4 0
2 years ago
Please help,
omeli [17]

Answer:

C

Step-by-step explanation:

3 0
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