2 years ago

What is the radius of a circle that has a diameter of 199

Mathematics

1 answer:

wolverine [178]2 years ago

6 0

Answer:

99.5

Step-by-step explanation:

Radius = Diameter/2

199/9

=99.5metres

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Darya [45]

Answer:

Step-by-step explanation:

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4 years ago

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Solve for x<br><br> 15x^2+16x= -4

Klio2033 [76]

15x²+16x+4 =0 (ax² +bx +c=0)

Δ = b²-4ac =256 - 4×15×4 =16

x1 = (-b+√Δ) / 2a = (-16+√16) / 30 =( -16+4) / 30 = -12/30 = - 2/5
x2 = (-b -√Δ) / 2a = (-16 -√16) / 30 = (-16 -4) /30 = -20/30 = -2/3

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3 years ago

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Which set of lengths are not the side lengths of a right triangle? (A-28, 45, 53) (B-13, 84, 85) (C-36, 77, 85) (D-16, 61, 65) [

nikklg [1K]

Side lengths 16, 61, and 65 are not part of a right triangle.

A right triangle's sides should follow this formula, C being the largest number:

$a^{2} + b ^{2} = c^{2}$

$16^{2} = 256$

$61^{2} = 3721$

$65^{2} = 4225$

256 + 3721 = 3977

$3977 \neq 4225$

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3 years ago

If necessaly, combine like terms.<br> (3x+8)2

mel-nik [20]

Step-by-step explanation:

multiply 2 with the bracket numbers

6x+16=0

6x= - 16

x=-16/6

x= - 8/3

4 0

3 years ago