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kipiarov [429]
3 years ago
9

I need help please!!! 30 points

Mathematics
1 answer:
lesya [120]3 years ago
5 0

Umm, I don't feel like typing (too lazy and tired to do that lol) so I will attach a written file.

BTW-

Radius is HALF the Diameter.

Diameter is that straight line that goes across the center of the circle.

Radius is basically a line from the center of the circle to any of the side of the circle.

Circumference is basically the perimeter of the circle, or the border or it. It is the Diameter times pi (it said to use 3.14 for pi). It can also be 2 times the Radius times pi (3.14) (since Radius is half the Diameter).

Area is the region inside the circle. Area is the Radius squared (to the power of 2, whatever) times pi (simplified as 3.14).

Okie, now the answers.

^^^Too lazy to put the unit lol.

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Answer:

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Step-by-step explanation:

The coordinates of the turning points of the quadratic equation

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→ By comparing it with the form above

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∴ 0 = 25 + 5b - 5

→ Add the like terms in the right side

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→ Subtract 5b from bth sides

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∴ -5b = 20

→ Divide both sides by -5 to find b

∴ b = -4

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→ Substitute them in the rule of h above t find it

∵ h = \frac{-(-4)}{2(1)} = \frac{4}{2}

∴ h = 2

→ To find k, substitute x by 2 and y by k

∵ k = (2)² - 4(2) - 5

∴ k = 4 - 8 - 5

∴ k = -9

∴ The cordinates of the turning point are (2, -9)

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