Answer:
A sample standard deviation is a statistic. This means that it is calculated from only some of the individuals in a population. Since the sample standard deviation depends upon the sample, it has greater variability. Thus the standard deviation of the sample is greater than that of the population
You have to plug in 2 for a and 6 for b.
(2)^2 + 4(2) + 7(6) 4 + 8 + 42 54
————————— = —————- = ——
5 - (2)^3 5 - 8 -3
The answer is -18.
Answer:
C. 120 Votes
Step-by-step explanation:
14/21 will get you 66.6. Taking that number and multiplying it by the 180 total students will end you with 120 which is your answer.
acceleration = velocity travelled per unit time= 80/10=8m/s². the acceleration is 8m/s²
Answer:
Step-by-step explanation:
1. Calculate the area of the floor
The formula for the area of a trapezoid is
A = ½(a + b)h,
where a and b are the lengths of the parallel sides and h is the distance between them.
However, we are not given the value of h, so we must use Brahmagupta's formula.
If the four sides are a, b, c, and d, the area A is
where s is the semiperimeter
Data:
a = 13 ft
b = 16 ft
c = 13 ft
d = 26 ft
(a) Calculate the semiperimeter
(b) Calculate the area
The area of David's floor is 252 ft².
2. Calculate the number of pieces of material