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Systems of Inequalities Answers

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A rectangular swimming pool has a perimeter of 96 ft. The area of the pool is 504 ft2. Which system of equations models this situation correctly, where l is the length of the pool in feet and w is the width of the pool in feet?

A
StartLayout Enlarged Left-Brace 1st Row l + w = 96 2nd Row (l + w) squared = 504 EndLayout
Option A
B
StartLayout Enlarged Left-Brace 1st Row 2 l + 2 w = 96 2nd Row (l + w) squared = 504 EndLayout
Option B
C
StartLayout Enlarged Left-Brace 1st Row l + w = 96 2ndRow l w = 504 EndLayout
Option C
D
StartLayout Enlarged Left-Brace 1st Row 2 l + 2 w = 96 2ndRow l w = 504 EndLayout
Option D
2
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Two boats depart from a port located at (–8, 1) in a coordinate system measured in kilometers and travel in a positive x-direction. The first boat follows a path that can be modeled by a quadratic function with a vertex at (1, 10), whereas the second boat follows a path that can be modeled by a quadratic function with a vertex at (0, –7). Which system of equations can be used to determine whether the paths of the boats cross?

A
StartLayout Enlarged Left-Brace 1st Row y = negative one-ninth (x minus 1) squared + 10 2nd Row y = one-eighth x squared minus 7 EndLayout
Option A
B
StartLayout Enlarged Left-Brace 1st Row y = one-ninth (x + 8) squared + 1 2nd Row y = Negative one-eighth (x + 8) squared + 1 EndLayout
Option B
C
StartLayout Enlarged Left-Brace 1st Row y = negative StartFraction 9 Over 49 EndFraction (x + 1) squared + 10 2nd Row y = one-eighth x squared minus 7 EndLayout
Option C
D
StartLayout Enlarged Left-Brace 1st Row y = negative 17 (x minus 1) squared + 10 2nd Row y = 17 x squared minus 7 EndLayout
Option D
3

At a skills competition, a target is being lifted into the air by a cable at a constant speed. An archer standing on the ground launches an arrow toward the target. The system of equations below models the height, in feet, of the target and the arrow t seconds after it was fired. Which statement most likely describes the situation modeled by this system?

Question illustration
A
The arrow is fired with an initial upward velocity of 2 ft/s.
B
The arrow is fired with an initial upward velocity of 4 ft/s.
C
The arrow is fired with an initial upward velocity of 8 ft/s.
D
The arrow is fired with an initial upward velocity of 32 ft/s.

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Systems of Inequalities Answers — TX-Algebra II…