The expression -5.5(a/1000) can be used to calculate the change in temperature in degrees Fahrenheit for an increase in altitude a, measuring in feet. A plane starts on the ground and then rises 23,000 ft. Find the change in temperature at the altitide of the plane.
Which choice is rite?
a.126.5 degrees
b. -126.5 degrees
c. -125 degrees
d. 125 degrees
2007-12-28 10:46:10 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Just plug in a = 23,000 and solve:
temp. change = -5.5(23000 / 1000)
= -5.5 x 23
= -126.5 degrees
2007-12-28 10:50:14 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
b is the correct answer.
23000 is a
23000/1000 = 23
-5.5 X 23= -126.5
2007-12-28 11:25:53 · answer #2 · answered by Anonymous · 1⤊ 0⤋
a = 23000 feet so you fill that in and get
-5.5 (23000/1000) change of temperature and thats
-5.5 x 23 = -126.5 degrees
2007-12-28 10:52:19 · answer #3 · answered by ViewtifulJoe 4 · 1⤊ 0⤋
We have a flaw here. This formula is not correct. I am a former airline pilot. The normal drop off in temperature is considered to be 3 degrees per thousand, not 5.5 degrees. That said at 23,000 ft agl at standard pressue the temperature would have dropped 69 degrees.
2007-12-28 10:56:06 · answer #4 · answered by wcowell2000 6 · 0⤊ 1⤋
just plug in 23000 for a, because there is an increase of 23000ft for altitude.
23000/10000=23(-5.5)=-126.5
2007-12-28 10:50:33 · answer #5 · answered by Mother Pucker 3 · 1⤊ 0⤋
-5.5*23000/1000 [brackets not needed btw] = -126.5
so b. is correct
2007-12-28 10:50:09 · answer #6 · answered by mountainpenguin 4 · 1⤊ 0⤋