In the mid-nineteenth century, explorers used the boiling point of water to estimate altitude. The boiling temperature of water T ( in ° F ) can be approximated by the model T = − 1.83 a + 212 , where a is the altitude in thousands of feet. a . Determine the temperature at which water boils at an altitude of 4000 ft. Round to the nearest degree. b. Two campers hiking in Colorado boil water for tea. If the water boils at 193 ° F , approximate the altitude of the campers. Give the result to the nearest hundred feet.
In the mid-nineteenth century, explorers used the boiling point of water to estimate altitude. The boiling temperature of water T ( in ° F ) can be approximated by the model T = − 1.83 a + 212 , where a is the altitude in thousands of feet. a . Determine the temperature at which water boils at an altitude of 4000 ft. Round to the nearest degree. b. Two campers hiking in Colorado boil water for tea. If the water boils at 193 ° F , approximate the altitude of the campers. Give the result to the nearest hundred feet.
Solution Summary: The author explains how the boiling temperature of water can be approximated by the model T=-1.83a+212, where a is the altitude in thousands of feet.
In the mid-nineteenth century, explorers used the boiling point of water to estimate altitude. The boiling temperature of water
T
(
in
°
F
)
can be approximated by the model
T
=
−
1.83
a
+
212
, where a is the altitude in thousands of feet.
a. Determine the temperature at which water boils at an altitude of 4000 ft. Round to the nearest degree.
b. Two campers hiking in Colorado boil water for tea. If the water boils at
193
°
F
, approximate the altitude of the campers. Give the result to the nearest hundred feet.
Listen
A falling object travels a distance given by the formula d = 6t + 9t2 where d is in feet
and t is the time in seconds. How many seconds will it take for the object to travel
112 feet? Round answer to 2 decimal places. (Write the number, not the units).
Your Answer:
Solve by the quadratic formula or completing the square to obtain exact solutions.
2
e
104
OA) -16±3√6
B) 8±√10
O c) -8±√10
OD) 8±3√√6
U
Question 14 (1 point)
Listen
The frame on a picture is 18 in by 22 in outside and is of uniform width. Using
algebraic methods, what is the width of the frame if the inner area of the picture
shown is 250 in²2? Write answer to 2 decimal places. (Write the number with no
units).
18 in
Your Answer:
22 in
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