Answer: 720
Step-by-step explanation:do 120 plus 120 plus 120 plus 120 plus 120 plus 120
=7x^4+15x^3+4y^2 I hope this helps!!
The four-fifths of a number, in this case, z is four times the number divided by z. That is 4z/5. When we add six to the product and equate the expression to 8, we get,
4z/5 = 8
The value of z from the equation is 10.