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Jrstx333
30.06.2019 •
Mathematics
Aspeedometer has a percent error of 10%. the actual speed of the car is 40 mph. select from the drop-down menus to correctly complete the statement. the speedometer is likely to show the speed is either mph or mph. worth 20 pts and brainliest if correct : ) options for the two drop down menus a. 30.0 b. 36.0 c. 38.4 d. 40.4 and for the other the options are a. 40.6 b. 41.6 c. 44.0 d. 50.0
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Ответ:
Answer
Answer
The speedometer is likely to show the speed is either 36.0 mph or 44.0 mph.
To prove
Formula
Where error = |Approx value - Exact value |
First case
As given
A speedometer has a percent error of 10%. The actual speed of the car is 40 mph.
Here
Percentage error = 10%
Exact value = 40 mph
error = - (Approx value - Exact value )
= - (Approx value - 40 )
= - Approx value + 40
Put in the formula
Thus
Approx value = 40 - 4
Approx value = 36 mph
Therefore Option (b) is correct .
Second Case
error = (Approx value - Exact value )
= (Approx value - 40 )
= Approx value - 40
Put in the formula
Thus
Approx value = 40 + 4
Approx value = 44 mph
Therefore Option (c) is correct .
Ответ:
A=20,000 m2 per year
Step-by-step explanation:
we have that Volume (V) =300,000 m3, so V=A*h, where A=area (m2) and h=15m
V=A*h ⇒ 300,000m3=A*15m ⇒ A=300,000m3/15m ⇒ A=20,000 m2