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emmainna [20.7K]
2 years ago
13

Does (2, 8) make the equation y = 4x true?

Mathematics
2 answers:
guajiro [1.7K]2 years ago
6 0

Answer:

Yes, it does.

Step-by-step explanation:

The equation y = 4x is the same as saying:

"The y coordinate is 4 times as much as the x coordinate"

So, with the coordinate set of (2, 8):

y = 4x

8 = 4 * 2

This is correct, meaning the coordinate does fit the equation.

Hope this helps!

Snezhnost [94]2 years ago
6 0

Answer:

yea because

Step-by-step explanation:

y = 4x is the same as the y coordinate is 4 times as much as the x coordinate an with the coordinate  of (2 8):y = 4 x 8 = 4 * 2 it is correct the coordinate does fit the equation.

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Cos (-Ø)= √3/3 sinØ <0 what is the value of sinØ?
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Answer:

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Step-by-step explanation:

Trigonometric function cos is even function which mean:

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Trigonometric function sin is odd function which mean:

sin (-∅) = - sin∅  => sin∅ < 0

The basic trigonometric equation reads in this case with angle marked ∅:

sin²∅ + cos²∅ = 1  => sin²∅ = 1 - cos²∅ => sin²∅ = 1 - ( √3/3 )² =>

sin²∅ = 1 - (3/9) => sin²∅ = 1 - (1/3) = (3/3) - (1/3) = 2/3 => sin∅ = - √(2/3) =>

sin∅ = - √2/√3 => sin∅ = - √6/3

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