A point is chosen at random (according to a uniform PDF) within asemicircle of the form{(x, y)|x^2+y^2≤r^2,y≥0}, for some given r>0.(1)Find the joint PDF of the coordinates x and y of the chosen point.(2)Find the marginal PDF of y and use it to find e[y].

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no

Which graph represents the linear function below? y-3=1/2(x+2)