Matrices and Row Operations Perform the indicated row operation:
[2 -1 -4|7]
[-1 2 1|-1]
[3 4 5| 5]
R3+3R2R3
[2 -1 -4|]
[-1 2 1| -1]
[_ _ _|_]

answer: 34rtyj,jkhtyetwrhyjeuiejnbhdfknbkguxfrbhkfdbjvkmbd,kvbsd.kxjvbhjnfbgjxdfn

step-by-step explanation:

the radius is 2 times the diameter.

step-by-step explanation:

b. 18

step-by-step explanation:

so the equation for this is:

ab^2=ac⋅ad

ab being the top length of 6 and ac being the length of 2 and ad being the length of x. let's plug into the equation:

6^2 = 2x

now lets just solve for x:

36 = 2x

18 = x

i hope that !