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 .
Since the lines are perfectly straight, we can assume that each line in an arc is 180 degrees. since it gives us 43 degrees for the angle next to z, we just need to subtract 43 from 180. this gives you the answer 137 degrees.
137 degrees is your answer
Answer:
875%
Step-by-step explanation:
- 40cm÷100=.4m
- (3.5÷.4)*100%=
- (35÷4)*100%=
- 8.75*100%=
- 875%
- so 3.5m has 875%of 40cm
which means 875%*40cm is equal to 3.5