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2 years ago

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A ratio of boys to girls in the classroom is 4 to 5if there are 20 girls in the class how many boys would there be? Explain your

response

2 answers:

sergey [27]2 years ago

6 0

16 because 5 times 4 = 20 there for you multiply 4 times 4 to get 16

EleoNora [17]2 years ago

3 0

Answer:

16 boys

Step-by-step explanation:

4/5 = ?/20 , multiply 20 and 4 then divide by 5

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Angle θ is in standard position. if sin(θ) = − 1 3 , and π < θ < 3π 2 , find cos(θ).

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The value of the angle θ is 160.52° then the value of the cosine will be negative 0.9428.

<h3>What is trigonometry?</h3>

Trigonometry deals with the relationship between the sides and angles of a right-angle triangle.

Angle θ is in standard position.

If sin(θ) = − 1/3 , and π < θ < 3π/2

Then the angle will be

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Then add 180 degrees, then we have

$\theta = -19.47 + 180\\\\\theta = 160.52$

Then the value of the cosine will be

$\cos 160.52^o=-0.9428$

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