Over what interval is the graph of f(x) = -(x + 8)2 - 1 decreasing?
(-8, 0)
(8, 0)
o (-0,8)
o(-2,-8)

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

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,

believe it or not anna is correct good job anna give me a fist bump there u go gal

8(1/6)

step-by-step explain:

49/6= 48

8 (1/6)