Partition matrices: Consider using a partition matrix in OLS. That is, consider X = [X1,X2] and = 1 2 where X1 is n × r1, X1 is n × r2, 1 is r1 × 1, 2 is r2 × 1, and r1 + r2 = r, the overall number of columns in X. When we take the inverse of a 2 × 2 partition matrix A B C D −1 = (A − BC−1D)−1 −(A − BD−1C)−1BD−1 −(D − CA−1B)−1CA−1 (D − CA−1B)−1 Find the equations for ˆ 1 and ˆ 2 using the OLS estimator ˆ = (X0X)−1X0y

it will be a cylinder. with a diameter of 8 and 4 single pieces high

step-by-step explanation:

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180