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Mathematics

1 answer:

Mekhanik [1.2K]3 years ago

8 0

Answer:b

Step-by-step explanation:

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A basketball player scored x, y, and z points in 3 games. Express the average number of points scored by the player in terms of

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The average will be the total points divided by the number of games:

(x+y+z) / 3

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3 years ago

There were some people no a boat 26 people got off the boat at the first dock 22 people got off the boat now there ate 74 people

kramer

Answer:

Step-by-step explanation:

Let the initial number of people on the boat be x:

x - 26 - 22 = 74

x -48 = 74

x = 74 + 48

x = 122

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2 years ago

What is the volume in cubic inches of the cylinder, rounded to the nearest cubic inch?

son4ous [18]

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3 years ago

A bake sale has 3 cakes for sale. Each cake was cut into 4 slices. Each slice was sold for $9. What was the total amount earned

Vaselesa [24]

Answer: Total amount is 108 because 9 times 4 is 36. So 36+36+36=108

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2 years ago

Sin5A/SinA-cos5A/cosA=4cos2A

irina1246 [14]

Answer:

See Explanation

Step-by-step explanation:

$\frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} = 4\cos2A \\ \\ LHS = \frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} \\ \\ = \frac{ \sin5A \:\cos A - \cos5A \: \sin A}{\sin A \:\cos A } \\ \\ = \frac{ \sin(5A -A )}{\sin A \:\cos A} \\ \\ = \frac{ \sin 4A}{\sin A \:\cos A} \\ \\ = \frac{ 2\sin 2A \: \cos 2A}{\sin A \:\cos A} \\ \\ = \frac{ 2 \times 2\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A} \\ \\ = \frac{ 4\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A} \\ \\ =4\cos 2A \\ \\ = RHS \\ \\ thus \\ \\ \frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} = 4\cos2A \\ \\ hence \: proved$

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3 years ago