We can use the equation 
to find the length of the side of a square.
<u>Solution:</u>
Given that, the perimeter of a square is equal to the perimeter of an equilateral triangle.
The length of a side of the square is given by "x"
And the length of a side of the equilateral triangle is given by "y"
Finding the equation to determine value of "x"
<em><u>The perimeter of a square with side "x" is given as:</u></em>
<em><u>Perimeter of a equilateral triangle with side "y" is given as:</u></em>
Given that perimeter of a square = perimeter of an equilateral triangle
Hence, we can use the equation to find the length of the side of a square.
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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The answer is the following:
4x(2x+3)
hope it helped :)
Plug in 2 wherever you see 'a'
3(2) + 5(2)(2)
1. 3×2 = 6, so:
6 + 5(2)(2)
2. 5×2=10, 10×2=20, so:
6 + 20
The final answer is 26.
