A laser range finder is able to compute a distance up to 3 km with an accuracy of 99.5%. What possible error is there in a reported measurement of 2500 meters?
A less than 5 meters
B between 5 an 10 meters
C between 10 and 15 meters
D over 20 meters
2006-08-24 13:21:15 · 6 answers · asked by cammiechameleon1 1 in Science & Mathematics ➔ Mathematics
At 3,000 meters, there is a 0.5% error
At 2,500 meters, there is a 0.5% x 2500 / 3000 error
= 0.41666667%
Therefore the error is,
2500 x 0.41666667%
= 10.4166667 meters
The answer is option (C).
2006-08-24 14:00:15 · answer #1 · answered by ideaquest 7 · 0⤊ 0⤋
C. between 10 and 15
2006-08-24 20:30:16 · answer #2 · answered by upallnight 4 · 0⤊ 0⤋
error is 0.5% or 0.005 as a decimal
0.005 times 2500 equals 12.5 meters
2006-08-24 20:24:18 · answer #3 · answered by naked_in_lake 2 · 0⤊ 0⤋
OK so you got your home work done for you, what did you learn nothing, so when you go for that big test and you fail, don't blame your dog.
2006-08-24 20:32:59 · answer #4 · answered by gamemanual 4 · 0⤊ 0⤋
What is 99.5% of 2500.
2006-08-24 20:24:09 · answer #5 · answered by L3-knightw1zard 4 · 0⤊ 0⤋
B
2006-08-24 20:26:10 · answer #6 · answered by Anonymous · 0⤊ 0⤋