Which statement is true about the polynomial 5s6t2 + 6st9 – 8s6t2 – 6t7 after it has been fully simplified? A. It has 3 terms and a degree of 9. B. It has 3 terms and a degree of 10. C. It has 4 terms and a degree of 9. D. It has 4 terms and a degree of 10.

C

Step-by-step explanation:

The polynomial is the question has 4 terms and a degree of 9. The terms are just the numbers of individual entities in the polynomial body.

To calculate the degree of the polynomial, we only check the highest power. For example., a quadratic equation has a power of 2 maximum and hence it is of degree two. In this particular question, the highest power is 9 and thus, the polynomial is of degree 9

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.