A speedometer has a percent error of 10%. The actual speed of the car is 40 mph. Select from the drop-down menus to correctly co
mplete 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
1 answer:
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 .
You might be interested in
Answer:
D.............................................
Step-by-step explanation:
im sorry if im wrong
Answer:
y=-2
Step-by-step explanation:
7 (-8) - 2y = -52
-56 - 2y = -52
-2y=4
y=-2
The first statement means:
b=i+12,
The third statement means:
b-3=4(i-3),
b-3=4i-12
b=4i-9
Using the value for b from the first statement in the third statement gives you:
i+12=4i-9
-3i=-21
i=7: and since b=i+12
b=19
So Ben is 19 and Ishaan is 7.
Answer:
1). x = 81
2). x = 84
Step-by-step explanation:
1). By applying geometric mean theorem in the given triangle,
56x = (18√14)²
56x = 4536
x =
x = 81
2). By applying geometric mean theorem,
16x = (8√21)²
16x = 1344
x =
x = 84
Answer:
C ( 3 + 6)
Expanded.