Answer:-0.828
Step-by-step explanation:
The r-value of the following data to three decimal places is:
r= -0.828
The correlation coefficient i.e. r is calculated by the formula:
where n is the sample size.
i.e. here n=5
x y x² y² xy
4 26 16 676 104
5 11 25 121 55
8 13 64 169 104
9 2 81 4 18
13 1 169 1 13
∑ 39 53 355 971 294
Hence, the correlation coefficient is calculated as follows:
Hence, the r-value is:
Answer:
The volume is 50.24.....
The base area is the total area of D
The lateral area is the total area of A, B, and C
The surface area is the total area of A, B, C, and D.
The answer is y=3x^2 (C)
d. <em>v </em>= 320cm3
8 x 4 = 32
32 x 10 = 320
320cm3