`(1/2+2/11)/(1-1/2xx2/11)`

If A=[(1,2),(3,-5)] then A^-1 is A. [(-5,-2),(-3,1)] B. [(5/11,2/11),(3/11, - 1/11)] C. [(-5/11,-2/11),(-3/11, -1/11)] D. [(5,2),(3,-1)]

3(7)/(11)+7(3)/(11)xx1(1)/(2)=?

(-11)^5xx(-11)^2

Which of the following is equal to 1?((0.11)^(2))/((1.1)^(2)xx0.1) (b) ((1.1)^(2))/(11^(2)xx(0.01)^(2)) (c) ((0.011)^(2))/((1.1)^(2)xx(0.01)^(2)) (d) ((0.11)^(2))/(11^(2)xx0.01)

7(1)/(2)-((8)/(11)xx7(1)/(3))-:(3(1)/(2)-2(1)/(4))

Simplify: (-18 1/3 xx 2 8/11) -(4 5/7 xx 2 (1/3))

ABC is a triangle and AD is the median. If the coordinates of A are (4,7,-8) and the coordinates of centroid of triangle ABC are (1,1,1) what are the coordinates of D? (A) ((-1)/2,2,11) (B) ((-1)/2,-2,11/2) (C) (-1,2,11) (D) (-5,-11,19)

tan^(-1)((1)/(2))+tan^(-1)((2)/(11))=