Answer:
-10c
Step-by-step explanation:
16x
-26c/x
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-10c
Answer:
<u>The correct answer s B. 2.21</u>
Step-by-step explanation:
There are three steps to calculate the standard deviation of the set of data given.
n = 5 (5 numbers in the set)
1. Calculate the mean, this way:
(1.2 + 2.3 + 5.2 + 6.6 + 4.8)/5 = 20.1/5 = 4.02
μ = 4.02
2. Calculate the variance, this way:
Sum of the squared difference between each number of the set and the mean divided by the number of elements of the sample minus one.
[(1.2 - 4.02)² + (2.3 - 4.02)² + (5.2 - 4.02)² + (6.6 - 4.02)² + (4.8 - 4.02)²]/4 =
19.568/4 = 4.892
σ² = 4.892
3. Finally, the standard deviation. this way:
Standard deviation is the square root of the variance.
σ² = 4.892
√σ² = √4.892
σ = 2.21
<u>The correct answer s B. 2.21</u>
Answer:
the length is 
and the width is 
Step-by-step explanation:
Let points A and B be placed on the x-axis. Their coordinates are 
and 
(because of parabola symmetry). Two other vertices lie on the parabola, then 
and 
The length of the side AB is 
and the length of the side AD is 
Thus, the area of the rectangle ABCD is
Find the derivative A':
Equate A' to 0:
The maximum area of the rectangle is
The dimensions of the rectangle are:
the length is 
and the width is 
A1 is the first term, in this case, A1 is 1
R is the ratio between adjacent numbers, in this case, R=3 because 3/1=3, 9/3=3, 27/9=3, 81/27=3
Answer:
Either b or c
Step-by-step explanation:
