A•b = 7*4 +(-4)*3
= 28 -12
= 16 . . . . . matches selection B
Answer:
Step-by-step explanation:
16/9 is already in its simplest form, so if you want a decimal, it should be 1.7777777... you can round it up if the question says so
30kx - 6kx = 8
24kx = 8 /(÷8)
3kx = 1
x = 1/3k