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3 years ago

7

Pls answer this question correctly pls .

2 answers:

den301095 [7]3 years ago

6 0

Answer:

First row: 19%

Decimal for 3/10: 0.3

Fraction for 0.49: 49/100

Percentage for 0.49: 49%

Decimal for 7/100: 0.07

Fraction for 7/100: 7&

Also 3% should be 30%. Just to point that out :)

cupoosta [38]3 years ago

4 0

Answer:

Step-by-step explanation:

Fraction Decimal Percentage

$\frac{19}{100}$ $0.19$ $19 \%$

$\frac{3}{10}$ $0.3$ $3 0\%$

$\frac{49}{100}$ $0.49$ $49 \%$

$\frac{7}{100}$ $0.07$ $7 \%$

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We know that the side opposite to right angle is always hypotenuse. So, hypotenuyse = y.

The side adjacent to the given angle $45^o$ is x. So, here adjacent = x.

The opposite side is opposite to the given angle. So, opposite = 4.

Now we will use SOHCAHTOA that is $sin(x) =\frac{Opposite}{Hypotenuse} , cos(x) =\frac{Adjacent}{Hypotenuse} , tan(x) =\frac{Opposite}{Adjacent}$ , where x is the angle given.

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Now to find y, we will use the trigonometric function sine.

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we know the value of $sin(45^o) =\frac{\sqrt{2}}{2}$

By substituting the value we will get,

$\frac{\sqrt{2}}{2} = \frac{4}{y}$

By cross multiplying we will get,

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$\frac{\sqrt{2}y}{\sqrt{2}} =\frac{8}{\sqrt{2} }$

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Now we will rationalize the denominator by multiplying $\sqrt{2}$ to the top and bottom.

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