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ad-work [718]
3 years ago
13

The Cumulative number (in thousands) of deaths from a certain disease from 2000 to 2010 may be modeled by A=2.39x2+5.04x+5.1, wh

ere x=0 corresponds to 2000, x=1 to 2001, etc. Use the formula for A to estimate symbolically the year when the total number of deaths reached 140 thousand.
Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
4 0

Answer:

what?

Step-by-step explanation:

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An arc with length 5 pi over 4 inches is formed by a 15 degree central angle what is the radius of the circle
Natalka [10]

Answer:

Radius of the circle is <em>15 inches.</em>

<em></em>

Step-by-step explanation:

Relation between length of arc, radius and the angle subtended by the arc on center is:

\theta = \dfrac{l}{r} ..... (1)

where \theta is the central angle in radians subtended by arc

l is the length of arc

r is the radius of arc

We are Given the following details:

l = \dfrac{5\pi}{4}\ inch

\theta = 15^\circ

We know that \pi \ radians = 180 ^\circ

Converting \theta to radians:

\theta =\dfrac{\pi}{180} \times 15 radians

Putting the values of \theta and l to find the value of r

\dfrac{\pi}{180} \times 15 = \dfrac{5\pi}{4r}\\\Rightarrow r = \dfrac{45}{3} \\\Rightarrow r = 15 \ inches

Hence, Radius of the circle is <em>15 inches.</em>

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2 years ago
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Answer:

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Step-by-step explanation:

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ad-work [718]

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The graph shows the locations of an eagles nest, a tree, and a pond. on the coordinate grid, each unit represents a mile.​
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Step-by-step explanation:

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