The
first choice gives you the same result. The factor of 5 can be removed to the outside of the summation symbol.
I’m pretty sure you add 78+55= 133
180-133=47
so 9x+2=47
subtract 2 from 47 and itself
so 9x=45
divide 9 and 45 by 9
so x=5
Factorise to get (x - 0.5)^3 = 0
The equation has root 1/2 with multiplicity 3.
Answer: y = -3x-6
Step-by-step explanation:
The slope is shows that it's parallel, and the y intercept goes through the cordinates