The answer is 15 13/15
yeah yep.
Answer:
D) a = - 5/2
Step-by-step explanation:
2x -5y - 7 = 0
5y = 2x - 7
y = 2/5 x - 7
the slope of this line is therefore 2/5 (factor of x).
the perpendicular slope is then (exchange y and x and flip the sign) -5/2, which is then a and the factor of x.
On what you need help with
well, 84 divided by 3 is 28 and if you check that by multiplying 28 with 3 you get 84 so its 28
