3 years ago

Which answer below correctly shows the proper substitution for the Pythagorean theorem?

Mathematics

1 answer:

natta225 [31]3 years ago

4 0

The answer is A. In a right triangle the side across from the 90 degree angle is c in the Pythagorean theorem.

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fomenos

Umm... This question would be LOT easier to read if you formatted it CORRECTLY! Ughhh, anyways, I would GUESS A.

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18.<br> Where does the graph of y = –2x2 + 6x cross the x-axis?

algol13

Answer:

(0,0) and (3,0)

Step-by-step explanation:

When you graph y= -2x^2+6x it turns out to be a parabola. So, that means that this parabola actually crosses two points on the x-axis; (0,0) and (3,0)

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A sector of a circle of 7cm has an area of 44cm².calculate the angle of the sector,correct to the nearest degree π =22\7

Hitman42 [59]

Answer:

$\theta=102.85^{\circ}$

Step-by-step explanation:

Given that,

The radius of circle, r = 7 cm

The area of sector, A = 44cm²

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$A=\dfrac{\theta}{360}\pi r^2$

Solve for $\theta$ .

$\theta=\dfrac{360A}{\pi r^2}\\\\\theta=\dfrac{360\times 44}{\dfrac{22}{7}\times 7^2}\\\\\theta=102.85^{\circ}$

So, the angle of the sector is equal to $102.85^{\circ}$ .

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Step-by-step explanation:

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The answer is 5 over 8.

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