Which statement is true about the polynomial
5s6t2 + 6st9 – 8s6t2 – 6t7 after it has been fully simplified?

it has 3 terms and a degree of 9.
it has 3 terms and a degree of 10.
it has 4 terms and a degree of 9.
it has 4 terms and a degree of 10.

3 terms and a degree of 10

Step-by-step explanation:

Lets simplify flully, the like terms are t^2 and we can add these terms:

all terms have t in so we can take out t:

3 terms and a degree of 10 with s and t^9, the exponent sum is 10 and three terms in the equation.

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.