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Ilia_Sergeevich [38]
3 years ago
14

Find the circumference of the circle and round to the nearest tenth

Mathematics
1 answer:
VLD [36.1K]3 years ago
4 0

Answer:

The circumference is 45.2yd

Step-by-step explanation:

Given

d = 14.4 --- diameter

Required

Determine the circumference

The circumference is calculated as:

C =\pi d

So, we have:

C =\pi * 14.4

Take pi a 3.14

C =3.14 * 14.4

C =45.216

Approximate

C =45.2yd

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Write a linear function f with the values f(2)=4 and f(−7)=9. A function is f(x)=
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Answer:

f(x) = -5/9 x + 5 1/9

Step-by-step explanation:

f(2)=4 and f(−7)=9 means the line pass through (2,4) and (- 7,9)

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m = (y-y') / (x-x') = (9 - 4) / (- 7 - 2) = - 5/9

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f(x) = -5/9 x + 5 1/9

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Which is the vertex of x2 + 10x = -17 <br><br> (-5,-8)<br><br> (5,8)<br><br> (-5,8)<br><br> (5,-8)
ad-work [718]

Answer:

vertex = (- 5, - 8)

Step-by-step explanation:

Given a quadratic in standard form : ax² + bx + c = 0 : a ≠ 0

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Given x² + 10x = - 17 ( add 17 to both sides )

x² + 10x + 17 = 0 ← in standard form

with a = 1, b = 10, c = 17, then

x_{vertex} = - \frac{10}{2} = - 5

Substitute x = - 5 into the quadratic for the corresponding value of y

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