3. For which inequality below is z=3
a solution?
z+ 5 > 9
z+ 5 > 9
z+ 5 5 8
D) Z+ 5 < 8

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

center= (-2,0)

radius= sqrt2/2

step-by-step explanation:

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,

answer4 to the second power is 16

and 4 to the third power is 64,