Answer:
914 m^2 to the nearest whole number.
Step-by-step explanation:
The area of the hexagonal base is made up of 6 congruent triangles so its area = 6 * 1/2 base * height
= 6 * 1/2 * 12 * 6√3
= 216√3 m^2.
The area of each slanting triangle = 6 * 15 m^2 so the lateral area of the pyramid
= 6*6*15 = 540 m^2
Total surface area = 540 + 216√3
= 914.12 m^2.
Answer:
Is there an English way?
Step-by-step explanation:
Answer: is what
Step-by-step explanation:
180 ≥ 45 + 15x
<u> -45</u> <u>-45 </u>
135 ≥ 15x
9 ≥ x
x ≤ 9
Answer: D
66 < 2x + 28
<u>-28 </u> <u> -28 </u>
38 < 2x
19 < x
x > 19
Answer: C <em>the answer could also be B</em>
11 < 5 + 2x
<u>-5</u> <u>-5 </u>
6 < 2x
3 < x
x > 3
Answer: E <em>the answer could also be A, B, and C</em>
-30 ≥ 6 - 4x
<u> -6</u> <u> -6 </u>
-36 ≥ -4x
9 ≤ x
x ≥ 9
Answer: A
- 4 ≥ 5
<u> + 4 </u> <u>+ 4 </u>
≥ 9
12
≥ 12(9)
x ≥ 108
Answer: B
If the covariance is 1225, variance of x is 1600,variance of y is 2500 then the correlation coefficient between x and y is 0.6125.
Given the covariance is 1225, variance of x is 1600,variance of y is 2500.
We have to find the correlation coefficient between x and y.
Covariance is basically a measure of the joint variability of two random variables.
Variance is a basically a measure of dispersion, meaning it is a measure of how far a set of numbers is spread out from their average value.
The correlation coefficient is basically the specific measure that quantifies the strength of the linear relationship between two variables in a correlation analysis.
We know that the formula of correlation coefficient is as under:
r=
r=1225/
r=1225/(40*50)
r=1225/2000
r=0.6125
Hence if the covariance is 1225, variance of x is 1600,variance of y is 2500 then the correlation coefficient between x and y is 0.6125.
Learn more about correlation coefficient at brainly.com/question/4219149
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