The car speed measurements that represent the same level of accuracy compared to the speed limit sign is 64mph (option D).
<h3>What is accuracy?</h3>
Accuracy is the exact conformity to truth or the degree of conformity of a measure to a true or standard value.
Accuracy is different from precision as precision deals with the closeness of an observed value with a true value.
According to this question, a highway sign shows a speed limit of 65 miles per hour. This suggests that a car speed measurement that will represent the same level of accuracy compared to the speed limit sign is 64mph.
64mph is the closest speed measurement to 65mph that does not exceed this speed limit. However, 66 mph is also close but exceeds the true value for the speed limit.
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Answer:
Step-by-step explanation:
step 1
Find the area of the circle
The area of the circle is equal to
we have
substitute
step 2
we know that
The area of a circle subtends a central angle of 2π radians
so
using proportion
Find out the area of a sector with a central angle of 8 π/11 radians
15 tickets cost = 193.75
So, 1 ticket costs = 193.75 / 15 = 12.92
In short, Your Answer would be $12.92
Hope this helps!
Answer: the length of the sides are 21m, 16m and 28 feet
Step-by-step explanation:
Let x represent the length of the first side.
Let y represent the length of the second side.
Let z represent the length of the third side.
The perimeter of a triangle is 65 meters. It means that
x + y + z = 65- - - - - - - - - - 1
The second side is 5 meters less than the first side. It means that
y = x - 5
The third side is 7 meters more than the first side. This means that
z = x + 7
Substituting y = x - 5 and z = x + 7 into equation 1, it becomes
x + x - 5 + x + 7 = 65
3x + 2 = 65
3x = 65 - 2 = 63
x = 63/3
x = 21
y = 21 - 5 = 16
z = 21 + 7 = 28
Use a calculator to find that
7.095*2.55 = 18.09225
Then round to the nearest tenth to get 18.1
Why the nearest tenth? Because we want the answer to have 3 sig figs. This is the smallest number of sig figs between the two original numbers (7.095 and 2.55).
Answer: Choice D) 18.1