If

4 5
-3 2

is multiplied by the identity matrix, what is the resulting matrix?
A)

-4 -5
3 -2

B)

-4 5
3 -2

C)

0 5
-3 0

D)

4 5
-3 2

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

How many solutions does the nonlinear system of equations graphed below have?

If chord ab is congruent to chord cd, then what must be true about ef and eg?