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cestrela7 [59]
2 years ago
8

Suppose the coordinate of P is 2, PQ = 8, and PR = 12. What are the possible coordinates of the midpoint of the given segment? T

he coordinates are PQ, PR, and QR.. . So confused on how to do this.. please help!! :)
Mathematics
1 answer:
Ratling [72]2 years ago
3 0
Base in your question the coordinate is P is 2, PQ has a coordinate of 8 while PR has a coordinate of 12. To find the mid point of each segment you must first find the coordinate of QR which is from 8-12. So the answer will be 
PQ = 5, PR = 6, and QR= 10
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A tank pumps out liquid at a rate of 12 gallons every 20 days. What is the unit rate in gallons per week?
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4.2

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Under very specific instructions, a jeweler made one ring for the queen and one ring for the princess. The gem on the queen's ri
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Read 2 more answers
Kyle boards a Ferris wheel at the 3-o'clock position and rides the Ferris wheel for multiple revolutions. The Ferris wheel rotat
SpyIntel [72]

Answer:

a) The expression for the change in angular position is \theta = 5\cdot t.

b) The expression for the height of Ryan regarding the center of the Ferris wheel is H(t) = 40\cdot \sin (5\cdot t).

c) The expression for the height of Ryan above the ground is H(t) = 40\cdot \sin (5\cdot t) + 47.

Step-by-step explanation:

The statement is incomplete. Complete form is introduced below:

<em>Kyle boards a Ferris wheel at the 3-o'clock position and rides the Ferris wheel for multiple revolutions. The Ferris wheel rotates at a constant angular speed of 5 radians per minute and has a radius of 40 feet. The center of the Ferris wheel is 47 feet above the ground. Let t represent the number of minutes since the Ferris wheel stated rotating.</em>

<em>a)</em><em> Write an expression (in terms of t) to represent the varying number of radians </em>\theta<em> Ryan has swept out since the ride started.</em>

<em>b)</em><em> Write an expression (in terms of t) to represent Ryan's height (in feet) above the center of the Ferris wheel.</em>

<em>c)</em><em> Write an expression (in terms of t) to represent Ryan's height (in feet) above the ground. </em>

a) Let suppose that Ferris wheel rotates counterclockwise. As the Ferris wheel rotates at constant rate, this kinematic expression can be used to determine the change in angular position (\theta), in radians:

\theta = \omega \cdot t (1)

Where:

\omega - Angular velocity, in radians per minute.

t - Time, in second.

If we know that \omega = 5\,\frac{rad}{min}, then the expression for the change in angular position is \theta = 5\cdot t.

b) Geometrically speaking, Ryan's height with respect to the center of the Ferris wheel is described by the following formula:

H(t) = r \cdot \sin (\omega\cdot t) (2)

Where:

r - Radius of the Ferris wheel, in feet.

H(t) - Height of Ryan with respect to the center of the Ferris wheel, in feet.

If we know that \omega = 5\,\frac{rad}{min} and r = 40\,ft, then the expression for the height of Ryan regarding the center of the Ferris wheel is H(t) = 40\cdot \sin (5\cdot t).

c) We use the following geometric expression to model Ryan's height above the ground:

H(t) = r\cdot \sin (\omega\cdot t) +h_{o} (3)

Where h_{o} is the height of the center of the Ferris wheel above the ground, in feet.

If we know that h_{o} = 47\,ft, \omega = 5\,\frac{rad}{min} and r = 40\,ft, then the expression for the height of Ryan above the ground is H(t) = 40\cdot \sin (5\cdot t) + 47.

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Inessa05 [86]
I think that it is 10
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