6. The Gateway Arch in St. Louis, Missouri can be approximated by the equation -2x2 + 92 y = 315 880 where x and y are measured in feet. 21 a. How wide is the arch? b. How high is the arch? 7. When a red traffic light turns green, you accelerate at a constant rate to a speed of 60 feet per second, then decelerate steadily to stop at the next traffic light. Your speed, r (in feet per second) is given by r = -10]t – 6|+ 60, where t is the time in seconds. a. How many seconds did it take to reach the second light? b. Your average speed was 30 feet per second. What was the distance between the lights?
6. The Gateway Arch in St. Louis, Missouri can be approximated by the equation -2x2 + 92 y = 315 880 where x and y are measured in feet. 21 a. How wide is the arch? b. How high is the arch? 7. When a red traffic light turns green, you accelerate at a constant rate to a speed of 60 feet per second, then decelerate steadily to stop at the next traffic light. Your speed, r (in feet per second) is given by r = -10]t – 6|+ 60, where t is the time in seconds. a. How many seconds did it take to reach the second light? b. Your average speed was 30 feet per second. What was the distance between the lights?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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I need help with questions 6 and 7.
![6. The Gateway Arch in St. Louis, Missouri can be approximated by the equation
-2
92
y = x +x
315
880
where x and y are measured in feet.
-
21
a. How wide is the arch?
b. How high is the arch?
7. When a red traffic light turns green, you accelerate at a constant rate to a speed of
60 feet per second, then decelerate steadily to stop at the next traffic light. Your
speed, r (in feet per second) is given by r = -10]t - 6|+ 60, where t is the time in
seconds.
a. How many seconds did it take to reach the second light?
b. Your average speed was 30 feet per second. What was the distance between the
lights?
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Transcribed Image Text:6. The Gateway Arch in St. Louis, Missouri can be approximated by the equation
-2
92
y = x +x
315
880
where x and y are measured in feet.
-
21
a. How wide is the arch?
b. How high is the arch?
7. When a red traffic light turns green, you accelerate at a constant rate to a speed of
60 feet per second, then decelerate steadily to stop at the next traffic light. Your
speed, r (in feet per second) is given by r = -10]t - 6|+ 60, where t is the time in
seconds.
a. How many seconds did it take to reach the second light?
b. Your average speed was 30 feet per second. What was the distance between the
lights?
ework.html#
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