If the sum of difference of 13 and 4 divided 64 and 8 is subtracted from the result. Find that number

correct answer:

i^31 = -i

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,